Special Supplement to the
Bulletin of the American Meteorological Society Vol. 96, No. 7, July 2015
STATE OF THE CLIMATE
IN 2014
Editors
Jessica Blunden Derek S. Arndt
Howard J. Diamond A. Johannes Dolman
Ryan L. Fogt Dale F. Hurst Martin O. Jeffries
Gregory C. Johnson Ademe Mekonnen
A. Rost Parsons Jared Rennie James A. Renwick
Jacqueline A. Richter-Menge Ahira Sánchez-Lugo Sharon Stammerjohn
Peter W. Thorne Kate M. Willett Chapter Editors
A
mericAnm
eteorologicAlS
ocietyTechnical Editor Mara Sprain
STATE OF THE CLIMATE
IN 2014
How to cite this document:
Citing the complete report:
Blunden, J. and D. S. Arndt, Eds., 2015: State of the Climate in 2014. Bull. Amer. Meteor. Soc., 96 (7), S1–
S267.
Citing a chapter (example):
Mekonnen, A., J. A. Renwick, and A. Sánchez-Lugo, Eds., 2015: Regional climates [in “State of the Climate in 2014”]. Bull. Amer. Meteor. Soc., 96 (7), S169–S219.
Citing a section (example):
Macara, G. R., 2015: New Zealand [in “State of the Climate in 2014”]. Bull. Amer. Meteor. Soc., 96 (7), S217–S219.
CoverCredits:
Front: AdAm Ü — Argo float WMO ID# 4900835 upon deployment at 13° 43.22' N; 105° 21.23' W on 11 September 2007.
This float was still fully functional and reporting data as of June 2015.
BACk: ©iStockphotos.com/Robert Pavsic—Capital city of Maldives Male coastline.
EDITOR & AUTHOR AFFILIATIONS (
AlphABetiCAlBy nAme)
Aaron-Morrison, Arlene P., Trinidad & Tobago Meteoro- logical Service, Piarco, Trinidad
Ackerman, Steven A., CIMSS, University of Wisconsin–
Madison, Madison, Wisconsin
Adamu, J. I., Nigerian Meteorological Agency, Abuja, Ni- geria
Albanil, Adelina, National Meteorological Service of Mexico, Mexico
Alfaro, Eric J., Center for Geophysical Research and School of Physics, University of Costa Rica, San José, Costa Rica
Allan, Rob, Met Office Hadley Centre, Exeter, United Kingdom
Alley, Richard B., Department of Geosciences and Earth and Environmental Systems Institute, The Pennsylvania State University, University Park, Pennsylvania Álvarez, Luis, Instituto de Hidrología de Meteorología y
Estudios Ambientales de Colombia (IDEAM), Bogotá, Colombia
Alves, Lincoln M., Centro de Ciencias do Sistema Ter- restre, Instituto Nacional de Pesquisas Espaciais, Ca- choeira Paulista, Sao Paulo, Brazil
Amador, Jorge A., Center for Geophysical Research and School of Physics, University of Costa Rica, San José, Costa Rica
Andreassen, L. M., Section for Glaciers, Ice and Snow, Norwegian Water Resources and Energy Directorate, Oslo, Norway
Antonov, John, NOAA/NESDIS National Centers for Environmental Information, Silver Spring, Maryland, and University Corporation for Atmospheric Research, Boul- der, Colorado
Applequist, Scott, NOAA/NESDIS National Centers for Environmental Information, Asheville, North Carolina Arendt, A., Geophysical Institute, University of Alaska
Fairbanks, Fairbanks, Alaska
Arévalo, Juan, Instituto Nacional de Meteorología e Hi- drología de Venezuela, Caracas, Venezuela
Arguez, Anthony, NOAA/NESDIS National Centers for Environmental Information, Asheville, North Carolina Arndt, Derek S., NOAA/NESDIS National Centers for
Environmental Information, Asheville, North Carolina Banzon, Viva, NOAA/NESDIS National Centers for Envi-
ronmental Information, Asheville, North Carolina Barichivich, J., School of Geography, University of Leeds,
Leeds, United Kingdom, and Center for Climate and Re- silience Research (CR)², Chile
Baringer, Molly O., NOAA/OAR Atlantic Oceanographic and Meteorological Laboratory, Miami, Florida
Barreira, Sandra, Argentine Naval Hydrographic Service, Buenos Aires, Argentina
Baxter, Stephen, NOAA/NWS Climate Prediction Cen- ter, College Park, Maryland
Bazo, Juan, Servicio Nacional de Meteorología e Hi- drología de Perú, Lima, Perú
Becker, Andreas, Global Precipitation Climatology Cen- tre, Deutscher Wetterdienst, Offenbach, Germany Behrenfeld, Michael J., Oregon State University, Corval-
lis, Oregon
Bell, Gerald D., NOAA/NWS Climate Prediction Center, College Park, Maryland
Benedetti, Angela, European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom
Bernhard, G., Biospherical Instruments, San Diego, Cali- fornia
Berrisford, Paul, European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom Berry, David I., National Oceanography Centre, South-
ampton, United Kingdom
Bettolli, María L., Departamento Ciencias de la Atmós- fera y los Océanos, Facultad de Ciencias Exactas y Natu- rales, Universidad de Buenos Aires, Argentina
Bhatt, U. S., Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska
Bidegain, Mario, Instituto Uruguayo de Meteorologia, Montevideo, Uruguay
Bindoff, Nathan, Antarctic Climate and Ecosystems Coop- erative Research Centre, and CSIRO Marine and Atmo- spheric Laboratories, Hobart, Tasmania, Australia Bissolli, Peter, Deutscher Wetterdienst, WMO RA VI Re-
gional Climate Centre Network, Offenbach, Germany Blake, Eric S., NOAA/NWS National Hurricane Center,
Miami, Florida
Blenman, Rosalind C., Barbados Meteorological Services, Christ Church, Barbados
Blunden, Jessica, ERT, Inc., NOAA/NESDIS National Centers for Environmental Information, Asheville, North Carolina
Bond, Nick A., Joint Institute for the Study of the At- mosphere and Ocean, University of Washington, and NOAA/OAR Pacific Marine Environmental Laboratory, Seattle, Washington
Bosilovich, Mike, Global Modelling and Assimilation Of- fice, NASA Goddard Space Flight Center, Greenbelt, Maryland
Boudet, Dagne, Climate Center, Institute of Meteorology of Cuba, Cuba
Box, J. E., Geological Survey of Denmark and Greenland, Copenhagen, Denmark
Boyer, Tim, NOAA/NESDIS National Centers for Environ- mental Information, Silver Spring, Maryland
Braathen, Geir O., WMO Atmospheric Environment Re- search Division, Geneva, Switzerland
Bromwich, David H., Byrd Polar and Climate Research Center, The Ohio State University, Columbus, Ohio Brown, L. C., Department of Geography, University of To-
ronto Mississauga, Mississauga, Ontario, Canada Brown, R., Climate Research Division, Environment Cana-
da, Montreal, Quebec, Canada
Bulygina, Olga N., Russian Institute for Hydrometeoro- logical Information, Obninsk, Russia
Burgess, D., Geological Survey of Canada, Ottawa, On- tario, Canada
Calderón, Blanca, Center for Geophysical Research, Uni- versity of Costa Rica, San José, Costa Rica
Camargo, Suzana J., Lamont-Doherty Earth Observa- tory, Columbia University, Palisades, New York
Campbell, Jayaka D., Department of Physics, The Univer- sity of the West Indies, Jamaica
Cappelen, J., Danish Meteorological Institute, Copenha- gen, Denmark
Carrasco, Gualberto, Servicio Nacional de Meteorología e Hidrología de Bolivia, La Paz, Bolivia
Carter, Brendan, NOAA/OAR Pacific Marine Environ- mental Laboratory, Seattle, Washington
Chambers, Don P., College of Marine Science, University of South Florida, St. Petersburg, Florida
Chandler, Elise, Bureau of Meteorology, Melbourne, Vic- toria, Australia
Chevallier, Frédéric, Laboratoire des Sciences du Climat et de l’Environnement, CEA-CNRS-UVSQ, Gif-sur- Yvette, France
Christiansen, Hanne H., Arctic Geology Department, UNIS-The University Centre in Svalbard, Longyearbyen, Norway
Christy, John R., University of Alabama in Huntsville, Huntsville, Alabama
Chung, D., Department of Geodesy and Geoinformation, Vienna University of Technology, Vienna, Austria Ciais, Philippe, LCSE, Gif sur l’Yvette, France
Clem, Kyle R., School of Geography, Environment, and Earth Sciences, Victoria University of Wellington, Wel- lington, New Zealand
Coelho, Caio A.S., CPTEC/INPE Center for Weather Forecasts and Climate Studies, Cachoeira Paulista, Brazil Cogley, J. G., Department of Geography, Trent University,
Peterborough, Ontario, Canada
Coldewey-Egbers, Melanie, DLR (German Aerospace Center) Oberpfaffenhofen, Wessling, Germany Colwell, Steve, British Antarctic Survey, Cambridge,
United Kingdom
Cooper, Owen R., Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, and NOAA/OAR Earth System Research Laboratory, Boulder, Colorado
Copland, L., Department of Geography, University of Ot- tawa, Ottawa, Ontario, Canada
Cronin, Meghan F., NOAA/OAR Pacific Marine Environ- mental Laboratory, Seattle, Washington
Crouch, Jake, NOAA/NESDIS National Centers for Envi- ronmental Information, Asheville, North Carolina Cunningham, Stuart A., Scottish Marine Institute, Oban,
Argyll, United Kingdom
Davis, Sean M., Cooperative Institute for Research in En- vironmental Sciences, University of Colorado Boulder, and NOAA/OAR Earth System Research Laboratory, Boulder, Colorado
De Jeu, R. A. M., Earth and Climate Cluster, Department of Earth Sciences, Faculty of Earth and Life Sciences, VU University Amsterdam, Amsterdam, Netherlands Degenstein, Doug, University of Saskatchewan, Saska-
toon, Saskatchewan, Canada
Demircan, M., Turkish State Meteorological Service, An- kara, Turkey
Derksen, C., Climate Research Division, Environment Canada, Toronto, Ontario, Canada
Destin, Dale, Antigua and Barbuda Meteorological Service, St. John’s, Antigua
Diamond, Howard J., NOAA/NESDIS National Centers for Environmental Information, Silver Spring, Maryland Dlugokencky, Ed J., NOAA/OAR Earth System Research
Laboratory, Boulder, Colorado
Dohan, Kathleen, Earth and Space Research, Seattle, Washington
Dolman, A. Johannes, Department of Earth Sciences, Earth and Climate Cluster, VU University Amsterdam, Amsterdam, Netherlands
Domingues, Catia M., Institute for Marine and Antarctic Studies, University of Tasmania, and Antarctic Climate and Ecosystems Cooperative Research Centre, Hobart, Tasmania, Australia
Donat, Markus G., Climate Change Research Centre, Uni- versity of New South Wales, Sydney, New South Wales, Australia
Dong, Shenfu, NOAA/OAR Atlantic Oceanographic and Meteorological Laboratory, and Cooperative Institute for Marine and Atmospheric Science, Miami, Florida Dorigo, Wouter A., Department of Geodesy and Geoin-
formation, Vienna University of Technology, Vienna, Aus- tria, and Department of Forest and Water Management, Gent University, Gent, Belgium
Drozdov, D. S., Earth Cryosphere Institute, Tyumen, and Tyumen State Oil and Gas University, Tyumen, Russia Duguay, C. R., Department of Geography & Environmental
Management, University of Waterloo, Waterloo, and H2O Geomatics Inc., Waterloo, Ontario, Canada Dunn, Robert J. H., Met Office Hadley Centre, Exeter,
United Kingdom
Durán-Quesada, Ana M., Center for Geophysical Re- search and School of Physics, University of Costa Rica, San José, Costa Rica
Dutton, Geoff S., Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, and NOAA/OAR Earth System Research Laboratory, Boulder, Colorado
Ebrahim, A., Egyptian Meteorological Authority, Cairo, Egypt
Elkins, James W., NOAA/OAR Earth System Research Laboratory, Boulder, Colorado
Epstein, H. E., University of Virginia, Charlottesville, Vir- ginia
Espinoza, Jhan C., Instituto Geofisico del Peru, Lima, Peru Evans III, Thomas E., NOAA/NWS Central Pacific Hur-
ricane Center, Honolulu, Hawaii
Famiglietti, James S., Department of Earth System Sci- ence, University of California, Irvine, California
Fateh, S., Islamic Republic of Iranian Meteorological Orga- nization, Iran
Fauchereau, Nicolas C., National Institute of Water and Atmospheric Research, Ltd., Auckland, New Zealand Feely, Richard A., NOAA/OAR Pacific Marine Environ-
mental Laboratory, Seattle, Washington
Fenimore, Chris, NOAA/NESDIS National Centers for Environmental Information, Asheville, North Carolina Fettweis, X., University of Liège, Liège, Belgium Fioletov, Vitali E., Environment Canada, Toronto, On-
tario, Canada
Flemming, Johannes, European Centre for Medium- Range Weather Forecasts, Reading, United Kingdom Fogarty, Chris T., Canadian Hurricane Centre, Environ-
ment Canada, Dartmouth, Nova Scotia, Canada Fogt, Ryan L., Department of Geography, Ohio Univer-
sity, Athens, Ohio
Folland, Chris K., Met Office Hadley Centre, Exeter, United Kingdom
Foster, Michael, CIMSS, University of Wisconsin–Madi- son, Madison, Wisconsin
Francis S. D., Nigerian Meteorological Agency, Abuja, Ni- geria
Franz, Bryan A., NASA Goddard Space Flight Center, Greenbelt, Maryland
Freeland, Howard, Institute of Ocean Sciences, Fisheries and Oceans, Sidney, British Columbia, Canada
Frith, Stacey M., NASA Goddard Space Flight Center, Greenbelt, Maryland
Froidevaux, Lucien, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California
Frost, G. V., ABR, Inc., Fairbanks, Alaska
Ganter, Catherine, Bureau of Meteorology, Melbourne, Victoria, Australia
Garzoli, Silvia, NOAA/OAR Atlantic Oceanographic and Meteorological Laboratory, and Cooperative Institute for Marine and Atmospheric Science, Miami, Florida Gerland, S., Norwegian Polar Institute, Fram Centre,
Tromsø, Norway
Gitau, Wilson, Department of Meteorology, University of Nairobi, Nairobi, Kenya
Gobron, Nadine, Land Resources Monitoring Unit, Insti- tute for Environment and Sustainability, Joint Research Centre, European Commission, Ispra, Italy
Goldenberg, Stanley B., NOAA/OAR Atlantic Oceano- graphic and Meteorological Laboratory, Miami, Florida Goni, Gustavo, NOAA/OAR Atlantic Oceanographic and
Meteorological Laboratory, Miami, Florida
Gonzalez, Idelmis T., Climate Center, Institute of Meteo- rology of Cuba, Cuba
Good, Simon A., Met Office Hadley Centre, Exeter, United Kingdom
Goto, A., Japan Meteorological Agency, Tokyo, Japan Griffin, Kyle S., Department of Atmospheric and Oceanic
Sciences, University of Wisconsin–Madison, Madison, Wisconsin
Grist, Jeremy, National Oceanography Centre, Southamp- ton, United Kingdom
Grooß, J.-U., Forschungszentrum Jülich, Jülich, Germany Guard, Charles “Chip”, NOAA/NWS Weather Forecast
Office, Guam
Gupta, S. K., SSAI, Hampton, Virginia
Hagos, S., FCSD/ASGC Climate Physics Group, Pacific Northwest National Laboratory, Richland, Washington Haimberger, Leo, Department of Meteorology and Geo-
physics, University of Vienna, Vienna, Austria Hall, Bradley D., NOAA/OAR Earth System Research
Laboratory, Boulder, Colorado
Halpert, Michael S., NOAA/NWS Climate Prediction Center, College Park, Maryland
Hamlington, Benjamin D., Center for Coastal Physical Oceanography, Old Dominion University, Norfolk, Vir- ginia
Hanna, E., Department of Geography, University of Shef- field, Sheffield, United Kingdom
Hanssen-Bauer, I., Norwegian Meteorological Institute, Blindern, Oslo, Norway
Harris, Ian, Climatic Research Unit, School of Environmen- tal Sciences, University of East Anglia, Norwich, United Kingdom
Heidinger, Andrew K., NOAA/NESDIS/STAR University of Wisconsin–Madison, Madison, Wisconsin
Heikkilä, A., Finnish Meteorological Institute, Helsinki, Finland
Heim, Jr., Richard R., NOAA/NESDIS National Centers for Environmental Information, Asheville, North Carolina Hendricks, S., Alfred Wegener Institute, Bremerhaven,
Germany
Hernandez, M., Climate Center, Institute of Meteorology of Cuba, Cuba
Hidalgo, Hugo G., Center for Geophysical Research and School of Physics, University of Costa Rica, San José, Costa Rica
Hilburn, Kyle, Remote Sensing Systems, Santa Rosa, Cali- fornia
Ho, Shu-peng (Ben), COSMIC, UCAR, Boulder, Colo- rado
Hobbs, Will R., ARC Centre of Excellence for Climate System Science, University of Tasmania, Hobart, Tasma- nia, Australia
Hu, Zeng-Zhen, NOAA/NWS National Centers for Envi- ronmental Prediction, Climate Prediction Center, Col- lege Park, Maryland
Huelsing, Hannah, State University of New York, Albany, New York
Hurst, Dale F., Cooperative Institute for Research in En- vironmental Sciences, University of Colorado Boulder, and NOAA/OAR Earth System Research Laboratory, Boulder, Colorado
Inness, Antje, European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom
Ishii, Masayoshi, Japan Meteorological Agency, Meteoro- logical Research Institute, Tsukuba, Japan
Jeffers, Billy, Meteorological Office, E.T. Joshua Airport, Arnos Vale, St. Vincent and the Grenadines
Jeffries, Martin O., Office of Naval Research, Arlington, Virginia
Jevrejeva, Svetlana, National Oceanography Centre, Liv- erpool, United Kingdom
Jin, Xiangze, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts
John, Viju, User Service and Climate, EUMETSAT, Darm- stadt, Germany
Johns, William E., Rosenstiel School of Marine and Atmo- spheric Science, Miami, Florida
Johnsen, B., Norwegian Radiation Protection Authority, Østerås, Norway
Johnson, Bryan, NOAA/OAR Earth System Research Laboratory, Global Monitoring Division, and University of Colorado Boulder, Boulder, Colorado
Johnson, Gregory C., NOAA/OAR Pacific Marine Envi- ronmental Laboratory, Seattle, Washington
Jones, Phil D., Climatic Research Unit, School of Environ- mental Sciences, University of East Anglia, Norwich, United Kingdom, and Center of Excellence for Climate Change Research, Department of Meteorology, King Ab- dulaziz, Jeddah, Saudi Arabia
Josey, Simon A., National Oceanography Centre, South- ampton, United Kingdom
Joyette, Sigourney, Meteorological Office, E.T. Joshua Air- port, Arnos Vale, St. Vincent and the Grenadines Jumaux, Guillaume, Météo France, Réunion
Kabidi, Khadija, Direction de la Météorologie Nationale Maroc, Rabat, Morocco
Kaiser, Johannes W., Max Planck Institute for Chemistry, Mainz, Germany, and European Centre for Medium- Range Weather Forecasts, Reading, United Kingdom Kang, K.-K., H2O Geomatics Inc., Waterloo, Ontario,
Canada
Kanzow, Torsten O., Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
Kao, Hsun-Ying, Earth & Space Research, Seattle, Wash- ington
Kazemi, A., Islamic Republic of Iranian Meteorological Or- ganization, Iran
Keller, Linda M., Department of Atmospheric and Ocean- ic Sciences, University of Wisconsin–Madison, Madison, Wisconsin
Kendon, Mike, Met Office National Climate Information Centre, Exeter, United Kingdom
Kennedy, John, Met Office Hadley Centre, Exeter, United Kingdom
Kerr, Kenneth, Trinidad & Tobago Meteorological Service, Piarco, Trinidad
Kheyrollah Pour, H., Department of Geography & Envi- ronmental Management, University of Waterloo, Water- loo, Ontario, Canada
Kholodov, A. L., Geophysical Institute, University of Alas- ka Fairbanks, Fairbanks, Alaska
Khoshkam, Mahbobeh, Islamic Republic of Iranian Me- teorological Organization, Iran
Kidd, R., Department of Geodesy and Geoinformation, Vienna University of Technology, Vienna, Austria Kieke, Dagmar, Institut fuer Umweltphysik, Bremen, Ger-
many
Kim, Hyungjun, Institute of Industrial Science, University of Tokyo, Japan
Kim, S.-J., Korea Polar Research Institute, Incheon, Repub- lic of Korea
Kimberlain, Todd B., NOAA/NWS National Hurricane Center, Miami, Florida
Klotzbach, Philip, Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado Knaff, John A., NOAA/NESDIS Center for Satellite Appli-
cations and Research, Fort Collins, Colorado
Kobayashi, Shinya, Climate Prediction Division, Japan Me- teorological Agency, Tokyo, Japan
Kohler, J., Norwegian Polar Institute, Tromsø, Norway Korshunova, Natalia N., All-Russian Research Institute of
Hydrometeorological Information - World Data Center, Obninsk, Russia
Koskela, T., Finnish Meteorological Institute, Helsinki, Fin- land
Kramarova, Natalya, Science Systems and Applications, Inc., NASA Goddard Space Flight Center, Greenbelt, Maryland
Kratz, D. P., NASA Langley Research Center, Hampton, Virginia
Kruger, Andries, South African Weather Service, Pretoria, South Africa
Kruk, Michael C., ERT, Inc., NOAA/NESDIS National Centers for Environmental Information, Asheville, North Carolina
Kumar, Arun, NOAA/NWS National Centers for Environ- mental Prediction, Climate Prediction Center, College Park, Maryland
Kwok, R., Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California
Lagerloef, Gary S. E., Earth & Space Research, Seattle, Washington
Lakkala, K., Finnish Meteorological Institute, Arctic Re- search Centre, Sodankylä, Finland
Lander, Mark A., University of Guam, Mangilao, Guam
Landsea, Chris W., NOAA/NWS National Hurricane Center, Miami, Florida
Lankhorst, Matthias, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California Lantz, Kathy, Cooperative Institute for Research in Envi-
ronmental Sciences, University of Colorado Boulder, and NOAA/OAR Earth System Research Laboratory, Boul- der, Colorado
Lazzara, Matthew A., Space Science and Engineering Center, University of Wisconsin–Madison, Madison, Wisconsin
Leuliette, Eric, NOAA/NWS NCWCP Laboratory for Satellite Altimetry, College Park, Maryland
L’Heureux, Michelle, NOAA/NWS Climate Prediction Center, College Park, Maryland
Lieser, Jan L., Antarctic Climate and Ecosystems Coopera- tive Research Centre, University of Tasmania, Hobart, Tasmania, Australia
Lin, I-I, National Taiwan University, Taipei, Taiwan Liu, Hongxing, Department of Geography, University of
Cincinnati, Cincinnati, Ohio
Liu, Yinghui, Cooperative Institute for Meteorological Sat- ellite Studies, University of Wisconsin–Madison, Madi- son, Wisconsin
Locarnini, Ricardo, NOAA/NESDIS National Centers for Environmental Information, Silver Spring, Maryland Loeb, Norman G., NASA Langley Research Center,
Hampton, Virginia
Long, Craig S., NOAA/NWS Center for Weather and Cli- mate Prediction, College Park, Maryland
Lorrey, Andrew M., National Institute of Water and At- mospheric Research, Ltd., Auckland, New Zealand Loyola, Diego, DLR (German Aerospace Center) Oberp-
faffenhofen, Wessling, Germany
Lui, Yi Y., ARC Centre of Excellence for Climate Systems Science and Climate Change Research Centre, University of New South Wales, Sydney, New South Wales, Aus- tralia
Lumpkin, Rick, NOAA/OAR Atlantic Oceanographic and Meteorological Laboratory, Miami, Florida
Luo, Jing-Jia, Australian Bureau of Meteorology, Mel- bourne, Victoria, Australia
Luojus, K., Finnish Meteorological Institute, Helsinki, Fin- land
Lyman, John M., NOAA/OAR Pacific Marine Environmen- tal Laboratory, Seattle, Washington, and Joint Institute for Marine and Atmospheric Research, University of Ha- waii, Honolulu, Hawaii
Macara, Gregor R., National Institute of Water and At- mospheric Research, Ltd., Wellington, New Zealand Maddux, Brent C., AOS/CIMSS University of Wisconsin–
Madison, Madison, Wisconsin
Malkova, G. V., Earth Cryosphere Institute, Tyumen, and Tyumen State Oil and Gas University, Tyumen, Russia
Manney, G., NorthWest Research Associates, and New Mexico Institute of Mining and Technology, Socorro, New Mexico
Marcellin-Honore’, Vernie, Dominica Meteorological Service, Dominica
Marchenko, S. S., Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska
Marengo, José A., Centro Nacional de Monitoramento e Alertas aos Desastres Naturais, Cachoeira Paulista, Sao Paulo, Brazil
Marra, John J., NOAA/NESDIS National Centers for Envi- ronmental Information, Honolulu, Hawaii
Martínez-Güingla, Rodney, CIIFEN Centro Internacional para la Investigación del Fenómeno de El Niño, Guaya- quil, Ecuador
Massom, Robert A., Australian Antarctic Division, and Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Aus- tralia
Mata, Mauricio M., Laboratório de Estudos dos Oceanos e Clima, Instituto de Oceanografia – FURG, Rio Grande (RS), Brazil
Mathis, Jeremy T., NOAA/OAR Pacific Marine Environ- mental Laboratory, Seattle, Washington
Mazloff, Matthew, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California McBride, Charlotte, South African Weather Service, Pre-
toria, South Africa
McCarthy, Gerard, National Oceanography Centre, Southampton, United Kingdom
McGree, Simon, Bureau of Meteorology, Melbourne, Vic- toria, Australia
McLean, Natalie, Department of Physics, The University of the West Indies, Jamaica
McVicar, Tim R., CSIRO Land and Water Flagship, Can- berra, Australian Capital Territory, and Australian Re- search Council Centre of Excellence for Climate System Science, Sydney, New South Wales, Australia
Mears, Carl A., Remote Sensing Systems, Santa Rosa, California
Meier, W., NASA Goddard Space Flight Center, Greenbelt, Maryland
Meinen, Christopher S., NOAA/OAR Atlantic Oceano- graphic and Meteorological Laboratory, Miami, Florida Mekonnen, A., Department of Energy and Environmen- tal Systems, North Carolina A & T State University, Greensboro, North Carolina
Melzer, T., Department of Geodesy and Geoinformation, Vienna University of Technology, Vienna, Austria Menéndez, Melisa, Environmental Hydraulic Institute,
Universidad de Cantabria, Cantabria, Spain
Mengistu Tsidu, G., Department of Earth and Environ- mental Sciences, Botswana International University of Science and Technology, Botswana
Meredith, Michael P., British Antarctic Survey, Cam- bridge, United Kingdom
Merrifield, Mark A., Joint Institute for Marine and Atmo- spheric Research, University of Hawaii, Honolulu, Hawaii Mitchum, Gary T., College of Marine Science, University
of South Florida, St. Petersburg, Florida
Monteiro, Pedro, CSIR Natural Resources and the Envi- ronment, Stellenbosch, South Africa
Montzka, Stephen A., NOAA/OAR Earth System Re- search Laboratory, Boulder, Colorado
Morice, Colin, Met Office Hadley Centre, Exeter, United Kingdom
Mote, T., Department of Geography, The University of Georgia, Athens, Georgia
Mudryk, L., Climate Research Division, Environment Cana- da, Toronto, Ontario, Canada
Mühle, Jens, Scripps Institution of Oceanography, Univer- sity of California, San Diego, La Jolla, California Mullan, A. Brett, National Institute of Water and Atmo-
spheric Research, Ltd., Wellington, New Zealand Müller, R., Forschungszentrum Jülich, Jülich, Germany Nash, Eric R., Science Systems and Applications, Inc.,
NASA Goddard Space Flight Center, Greenbelt, Mary- land
Naveira Garabato, Alberto C., University of South- ampton, National Oceanography Centre, Southampton, United Kingdom
Nerem, R. Steven, Colorado Center for Astrodynamics Research, Cooperative Institute for Research in Envi- ronmental Sciences, University of Colorado Boulder, Boulder, Colorado
Newman, Louise, SOOS International Project Office, Institute for Marine and Antarctic Science, University of Tasmania, Hobart, Tasmania, Australia
Newman, Paul A., NASA Goddard Space Flight Center, Greenbelt, Maryland
Nicolaus, M., Alfred Wegener Institute, Bremerhaven, Germany
Nieto, Juan J., CIIFEN Centro Internacional para la Inves- tigación del Fenómeno de El Niño, Guayaquil, Ecuador Noetzli, Jeannette, Department of Geography, University
of Zurich, Zurich, Switzerland
O’Neel, S., USGS, Alaska Science Center, Anchorage, Alaska
Oberman, N. G., MIRECO Mining Company, Syktyvkar, Russia
Ogallo, Laban A., IGAD Climate Prediction and Applica- tions Centre, Nairobi, Kenya
Oki, Taikan, Institute of Industrial Science, University of Tokyo, Japan
Oludhe, Christopher S., Department of Meteorology, University of Nairobi, Nairobi, Kenya
Osborn, Tim J., Climatic Research Unit, School of Envi- ronmental Sciences, University of East Anglia, Norwich, United Kingdom
Overland, J., NOAA/OAR Pacific Marine Environmental Laboratory, Seattle, Washington
Oyunjargal, Lamjav, Hydrology and Environmental Moni- toring, Institute of Meteorology and Hydrology, National Agency for Meteorology, Ulaanbaatar, Mongolia
Pabón, D., CIIFEN Centro Internacional para la Investig- ación del Fenómeno de El Niño, Guayaquil, Ecuador Parinussa, Robert M., School of Civil and Environmental
Engineering, Water Research Centre, University of New South Wales, Sydney, New South Wales, Australia Park, E-hyung, Korea Meteorological Administration,
South Korea
Parker, David, Met Office Hadley Centre, Exeter, United Kingdom
Parsons, Rost, NOAA/NESDIS National Centers for Envi- ronmental Information, Silver Spring, Maryland
Pasch, Richard J., NOAA/NWS National Hurricane Cen- ter, Miami, Florida
Pascual-Ramírez, Reynaldo, National Meteorological Service of Mexico, Mexico
Pelto, Mauri S., Nichols College, Dudley, Massachusetts Peng, Liang, UCAR COSMIC, Boulder, Colorado
Perovich, D., USACE Cold Regions Research and Engineer- ing Laboratory, Hanover, New Hampshire
Persson, P. O. G., Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, and NOAA/OAR Earth System Research Laboratory, Boulder, Colorado
Peterson, Thomas C., NOAA/NESDIS National Centers for Environmental Information, Asheville, North Carolina Petropavlovskikh, Irina, NOAA/OAR Earth System Re-
search Laboratory, Global Monitoring Division, and Uni- versity of Colorado Boulder, Boulder, Colorado Peuch, Vincent-Henri, European Centre for Medium-
Range Weather Forecasts, Reading, United Kingdom Pezza, Alexandre B., Greater Wellington Regional Coun-
cil, Wellington, New Zealand
Phillips, David, Environment Canada, Toronto, Ontario, Canada
Photiadou, C., Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Nether- lands
Pinty, Bernard, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Cli- mate Risk Management Unit, Ispra, Italy
Pitts, Michael C., NASA Langley Research Center, Hamp- ton, Virginia
Porter, Avalon O., Cayman Islands National Weather Ser- vice, Grand Cayman, Cayman Islands
Proshutinsky, A. , Woods Hole Oceanographic Institu- tion, Woods Hole, Massachusetts
Quegan, Shaun, University of Sheffield, Sheffield, United Kingdom
Quintana, Juan, Direccion Meteorologica de Chile, Chile Rahimzadeh, Fatemeh, Atmospheric Science and Meteo-
rological Research Center, Tehran, Iran
Rajeevan, Madhavan, Indian Institute of Tropical Meteo- rology, Pune, India
Ramos, A., Instituto Dom Luiz, Universidade de Lisboa, Campo Grande, Lisboa, Portugal
Raynor, Darren, National Oceanography Centre, South- ampton, United Kingdom
Razuvaev, Vyacheslav N., All-Russian Research Institute of Hydrometeorological Information, Obninsk, Russia Reagan, James, NOAA/NESDIS National Centers for
Environmental Information, Silver Spring, Maryland, and Earth System Science Interdisciplinary Center/Coopera- tive Institute for Climate and Satellites–Maryland, Uni- versity of Maryland, College Park, Maryland
Reid, Phillip, Australian Bureau of Meteorology and CAW- RC, Hobart, Tasmania, Australia
Reimer, C., Department of Geodesy and Geoinformation, Vienna University of Technology, Vienna, Austria Rémy, Samuel, Laboratoire de Météorologie Dynamique,
Paris, France
Rennie, Jared, Cooperative Institute for Climate and Satel- lites, North Carolina State University, Asheville, North Carolina
Renwick, James A., Victoria University of Wellington, Wellington, New Zealand
Revadekar, Jayashree V., Indian Institute of Tropical Me- teorology, Pune, India
Richter-Menge, Jacqueline A., USACE Cold Regions Research and Engineering Laboratory, Hanover, New Hampshire
Robinson, David A., Department of Geography, Rutgers University, Piscataway, New Jersey
Rodell, Matthew, Hydrological Sciences Laboratory, NASA, Goddard Space Flight Center, Greenbelt, Mary- land
Romanovsky, Vladimir E., Geophysical Institute, Univer- sity of Alaska Fairbanks, Fairbanks, Alaska
Ronchail, Josyane, University of Paris, Paris, France Rosenlof, Karen H., NOAA/OAR Earth System Research
Laboratory, Boulder, Colorado
Roth, Chris, University of Saskatchewan, Saskatoon, Sas- katchewan, Canada
Sabine, Christopher L., NOAA/OAR Pacific Marine Envi- ronmental Laboratory, Seattle, Washington
Sallée, Jean-Bapiste, CNRS, L’OCEAN-IPSL, Paris, France
Sánchez-Lugo, Ahira, NOAA/NESDIS National Centers for Environmental Information, Asheville, North Carolina Santee, Michelle L., NASA Jet Propulsion Laboratory,
Pasadena, California
Sawaengphokhai, P., SSAI, Hampton, Virginia
Sayouri, Amal, Direction de la Météorologie Nationale Maroc, Rabat, Morocco
Scambos, Ted A., National Snow and Ice Data Center, University of Colorado Boulder, Boulder, Colorado Schemm, Jae, NOAA/NWS Climate Prediction Center,
College Park, Maryland
Schmid, Claudia, NOAA/OAR Atlantic Oceanographic and Meteorological Laboratory, Miami, Florida
Schmidtko, Sunke, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Schreck, Carl J. III, Cooperative Institute for Climate and Satellites, North Carolina State University, Asheville, North Carolina
Send, Uwe, Scripps Institution of Oceanography, Univer- sity of California, San Diego, La Jolla, California
Sensoy, Serhat, Turkish State Meteorological Service, Ka- laba, Ankara, Turkey
Setzer, Alberto, National Institute for Space Research, São Jose dos Compos-SP, Brazil
Sharp, M., Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, Canada Shaw, Adrian, Meteorological Service, Jamaica, Kingston,
Jamaica
Shi, Lei, NOAA/NESDIS National Centers for Environmen- tal Information, Asheville, North Carolina
Shiklomanov, Nikolai I., Department of Geography, George Washington University, Washington, D.C.
Shu, Song, Department of Geography, University of Cin- cinnati, Cincinnati, Ohio
Shupe, M. D., Cooperative Institute for Research in En- vironmental Sciences, University of Colorado Boulder, and NOAA/OAR Earth System Research Laboratory, Boulder, Colorado
Siegel, David A., University of California–Santa Barbara, Santa Barbara, California
Sima, Fatou, Division of Meteorology, Department of Wa- ter Resources, Banjul, The Gambia
Simmons, Adrian J., European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom
Smeed, David A., National Oceanography Centre, South- ampton, United Kingdom
Smeets, C. J. P. P., Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Nether- lands
Smith, Cathy, Cooperative Institute for Research in En- vironmental Sciences, University of Colorado Boulder, and NOAA/OAR Earth System Research Laboratory, Boulder, Colorado
Smith, Sharon L., Geological Survey of Canada, Natural Resources Canada, Ottawa, Ontario, Canada
Smith, Thomas M., NOAA/NESDIS Center for Satel- lite Applications and Research/SCSD; and Cooperative Institute for Climate and Satellites/Earth System Science Interdisciplinary Center, University of Maryland, College Park, Maryland
Spence, Jacqueline M., Meteorological Service, Jamaica, Kingston, Jamaica
Srivastava, A. K., India Meteorological Department, Pune, India
Stackhouse Jr., Paul W., NASA Langley Research Center, Hampton, Virginia
Stammerjohn, Sharon, Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, Colorado
Steinbrecht, Wolfgang, DWD (German Weather Ser- vice), Hohenpeissenberg, Germany
Stella, Jose L., Servicio Meteorologico Nacional, Argentina Stephenson, Kimberly, Department of Physics, The Uni-
versity of the West Indies, Jamaica
Stephenson, Tannecia S., Department of Physics, The University of the West Indies, Jamaica
Strahan, Susan, Universities Space Research Association, NASA Goddard Space Flight Center, Greenbelt, Mary- land
Streletskiy, D. A., Department of Geography, George Washington University, Washington, D.C.
Swart, Sebastiaan, CSIR Southern Ocean Carbon & Cli- mate Observatory, Stellenbosch, South Africa
Sweet, William, NOAA/NOS Center for Operational Oceanographic Products and Services, Silver Spring, Maryland
Tamar, Gerard, Grenada Airports Authority, St. George’s, Grenada
Taylor, Michael A., Department of Physics, The University of the West Indies, Jamaica
Tedesco, M., City College of New York, New York, New York, and National Science Foundation, Arlington, Vir- ginia
Thompson, L., Department of Geography, University of Ottawa, Ottawa, Ontario, Canada
Thompson, Philip, Joint Institute for Marine and Atmo- spheric Research, University of Hawaii, Honolulu, Hawaii Thorne, Peter W., Physical Geography (Climate Science),
Maynooth University, Maynooth, Ireland
Timmermans, M.-L., Yale University, New Haven, Con- necticut
Tjernström, M., Department of Meteorology and Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
Tobin, Isabelle, LSCE-IPSL, CEA, Gif Sur Yvette, France Tobin, Skie, Bureau of Meteorology, Melbourne, Victoria,
Australia
Trachte, Katja, Laboratory for Climatology and Remote Sensing, Philipps-Universität, Marburg, Germany Trewin, Blair C., Australian Bureau of Meteorology, Mel-
bourne, Victoria, Australia
Trigo, Ricardo, Instituto Dom Luiz, Universidade de Lis- boa, Campo Grande, Lisboa, Portugal
Trotman, Adrian R., Caribbean Institute for Meteorology and Hydrology, Bridgetown, Barbados
Tschudi, M., Aerospace Engineering Sciences, University of Colorado Boulder, Boulder, Colorado
van de Wal, R. S. W., Institute for Marine and Atmo- spheric Research Utrecht, Utrecht University, Utrecht, Netherlands
van den Broeke, M., Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Nether- lands
van der A, Ronald J., KNMI (Royal Netherlands Meteoro- logical Institute), DeBilt, Netherlands
van der Schrier, Gerard, KNMI (Royal Netherlands Me- teorological Institute), De Bilt, Netherlands
van der Werf, Guido R., Faculty of Earth and Life Sci- ences, VU University Amsterdam, Netherlands van Dijk, Albert I. J. M., Fenner School of Environment
and Society, Australian National University, Canberra, Australian Capital Territory, Australia
Vautard, Robert, LSCE-IPSL, CEA, Gif Sur Yvette, France Vazquez, J. L., National Meteorological Service of Mexico,
Mexico
Vega, Carla, Center for Geophysical Research, University of Costa Rica, San José, Costa Rica
Verver, G., Royal Netherlands Meteorological Institute, De Bilt, Netherlands
Vieira, Gonçalo, Center of Geographical Studies, Univer- sity of Lisbon, Portugal
Vincent, Lucie A., Environment Canada, Toronto, On- tario, Canada
Vose, Russell S., NOAA/NESDIS National Centers for En- vironmental Information, Asheville, North Carolina Wagner, W., Department of Geodesy and Geoinforma-
tion, Vienna University of Technology, Vienna, Austria Wåhlin, Anna, Department of Earth Sciences, University
of Gothenburg, Göteborg, Sweden
Wahr, J., Department of Physics and Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, Colorado
Walker, D. A., University of Alaska Fairbanks, Fairbanks, Alaska
Walsh, J., International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, Alaska
Wang, Bin, SOEST, Department of Meteorology, Univer- sity of Hawaii, and IPRC, Honolulu, Hawaii
Wang, Chunzai, NOAA/OAR Atlantic Oceanographic and Meteorological Laboratory, Miami, Florida
Wang, Junhong, State University of New York, Albany, New York
Wang, Lei, Department of Geography and Anthropology, Louisiana State University, Baton Rouge, Louisiana Wang, M., Joint Institute for the Study of the Atmosphere
and Ocean, University of Washington, Seattle, Washing- ton
Wang, Sheng-Hung, Byrd Polar and Climate Research Center, The Ohio State University, Columbus, Ohio Wang, Shujie, Department of Geography, University of
Cincinnati, Cincinnati, Ohio
Wanninkhof, Rik, NOAA/OAR Atlantic Oceanographic and Meteorological Laboratory, Miami, Florida Weber, Mark, University of Bremen, Bremen, Germany Werdell, P. Jeremy, NASA Goddard Space Flight Center,
Greenbelt, Maryland
Whitewood, Robert, Environment Canada, Toronto, On- tario, Canada
Wilber, Anne C., Science Systems and Applications, Inc., Hampton, Virginia
Wild, Jeannette D., INNOVIM, NOAA Climate Predic- tion Center, College Park, Maryland
Willett, Kate M., Met Office Hadley Centre, Exeter, United Kingdom
Williams, Michael J. M., National Institute of Water and Atmospheric Research, Wellington, New Zealand Willis, Josh K., Jet Propulsion Laboratory, California Insti-
tute of Technology, Pasadena, California
Wolken, G., Alaska Division of Geological and Geophysical Surveys, Fairbanks, Alaska
Wong, Takmeng, NASA Langley Research Center, Hamp- ton, Virginia
Wouters, B., School of Geographical Sciences, University of Bristol, Bristol, United Kingdom
Xue, Yan, NOAA/NWS National Centers for Environmen- tal Prediction, Climate Prediction Center, College Park, Maryland
Yamada, Ryuji, Climate Prediction Division, Tokyo Cli- mate Center, Japan Meteorological Agency, Tokyo, Japan
Love-Brotak, S. Elizabeth, Lead Graphics Production, NOAA/NESDIS National Centers for Environmental Information, Asheville, North Carolina
Sprain, Mara, Technical Editor, LAC Group, NOAA/
NESDIS National Centers for Environmental Information, Asheville, North Carolina
Veasey, Sara W., Visual Communications Team Lead, NOAA/NESDIS National Centers for Environmental Information, Asheville, North Carolina
Griffin, Jessicca, Graphics Support, Cooperative Institute for Climate and Satellites-NC, North Carolina State University, Asheville, North Carolina
Misch, Deborah J., Graphics Support, LMI Consulting, Inc., NOAA/NESDIS National Centers for
Environmental Information, Asheville, North Carolina Riddle, Deborah B., Graphics Support, NOAA/NESDIS
National Centers for Environmental Information, Asheville, North Carolina
Young, Teresa, Graphics Support, STG, Inc., NOAA/
NESDIS National Centers for Environmental Information, Asheville, North Carolina
EDITORIAL AND PRODUCTION TEAM
Yashayaev, Igor, Bedford Institute of Oceanography, Fisheries and Oceans Canada, Dartmouth, Nova Scotia, Canada
Yim, So-Young, Korea Meteorological Administration, South Korea
Yin, Xungang, ERT, Inc., NOAA/NESDIS National Centers for Environmental Information, Asheville, North Carolina Yu, Lisan, Woods Hole Oceanographic Institution, Woods
Hole, Massachusetts
Zambrano, Eduardo, Centro Internacional para la Inves- tigación del Fenómeno El Niño, Guayaquil, Ecuador Zhang, Peiqun, Beijing Climate Center, Beijing, China Zhou, Lin, Cold and Arid Regions Environmental and
Engineering Research Institute, Lanzhou, China Ziemke, Jerry, NASA Goddard Space Flight Center,
Greenbelt, Maryland
TABLE OF CONTENTS
List of authors and affiliations ... i
Abstract ... xvi
1. INTRODUCTION ...1
2. GLOBAL CLIMATE ...5
a. Overview ...5
b. Temperature ...9
1. Surface temperature ...9
sideBAr 2.1: UnderstAndingthestAtistiCAlUnCertAintyoF 2014'sdesignAtionAsthewArmest yeAronreCord ...11
2. Lower tropospheric temperature...13
3. Lower stratospheric temperature ...14
4. Temperature extreme indices...15
c. Cryosphere ...17
1. Permafrost ...17
2. Northern Hemisphere snow cover ...18
3. Alpine glaciers ...19
d. Hydrological cycle ... 20
1. Surface humidity ... 20
2. Total column water vapor ... 22
3. Upper tropospheric humidity ... 23
4. Precipitation...24
5. Cloudiness ...24
6. River discharge ... 26
7. Terrestrial water storage ... 27
8. Soil moisture ... 28
e. Atmospheric circulation ... 29
1. Mean sea level pressure and related modes of variability ... 29
sideBAr 2.2: monitoringgloBAldroUghtUsingtheselF-CAliBrAting pAlmer droUght severity index ... 30
2. Land surface wind speed ... 33
3. Ocean surface wind speed ... 34
4. Upper air wind speed ... 35
f. Earth radiation budget ...37
1. Earth radiation budget at top-of-atmosphere ...37
2. Mauna Loa clear-sky atmospheric solar transmission ... 38
g. Atmospheric chemical composition ... 39
1. Long-lived greenhouse gases ... 39
2. Ozone-depleting gases ... 42
3. Aerosols ... 43
4. Stratospheric ozone ... 44
5. Stratospheric water vapor ... 46
6. Tropospheric ozone ... 48
7. Carbon monoxide ... 49
sideBAr 2.3: ClimAtemonitoringmeetsAirqUAlityForeCAstingin CAms ... 50
h. Land surface properties ...52
1. Forest biomass ...52
2. Land surface albedo dynamics ... 53
3. Terrestrial vegetation dynamics ... 55
4. Biomass burning ... 56
3. GLOBAL OCEANS...59
a. Overview ...59
b. Sea surface temperatures ...59
sideBAr 3.1: the BloB: AnextremewArmAnomAlyinthenortheAst pACiFiC ... 62
c. Ocean heat content ... 64
sideBAr 3.2: extrAordinAryoCeAnCoolingAndnewdensewAterFormAtioninthe north AtlAntiC ...67
d. Ocean surface heat and momentum fluxes ... 68
e. Sea surface salinity ...71
f. Subsurface salinity ...74
g. Surface currents ...76
1. Pacific Ocean ...76
2. Indian Ocean ... 77
3. Atlantic Ocean ... 77
h. Meridional overturning circulation observations in the North Atlantic Ocean ... 78
i. Meridional oceanic heat transport in the Atlantic Ocean ...81
j. Sea level variability and change ... 82
k. Global ocean phytoplankton ... 85
l. Ocean carbon ... 87
1. Sea–air carbon dioxide fluxes ... 88
2. Ocean carbon inventory ... 89
4. THE TROPICS ...91
a. Overview ...91
b. ENSO and the tropical Pacific ...91
1. Oceanic conditions ...91
2. Atmospheric circulation ... 92
c. Tropical intraseasonal activity ... 93
d. Global monsoon summary ... 96
e. Intertropical convergence zones ... 97
1. Pacific ... 97
2. Atlantic ... 99
f. Tropical cyclones ... 100
1. Overview ... 100
2. Atlantic Basin ... 101
sideBAr 4.1: 2013 vs. 2014 AtlAntiChUrriCAneACtivity—ABrieFCompArisonoFtwoBelow- AverAgeseAsons ... 104
3. Eastern North Pacific and Central North Pacific Basins ... 107
sideBAr 4.2: remnAnteAstern pACiFiCstormsdrivewACkyweAtherACrossthe U.s. ... 108
4. Western North Pacific Basin ...112
5. North Indian Ocean ...115
6. South Indian Ocean ...116
7. Australian Basin ...117
8. Southwest Pacific Basin ...119
g. Tropical cyclone heat potential ...121
h. Atlantic warm pool ... 123
i. Indian Ocean dipole ... 124
5. THE ARCTIC ... 127
a. Overview ... 127
b. Air temperature ... 128
sideBAr 5.1: ChAllengeoF ArCtiCCloUdsAndtheirimpliCAtionsForsUrFACerAdiAtion ... 130
c. Ozone and UV radiation ...131
d. Terrestrial snow cover ... 133
e. Glaciers and ice caps outside Greenland ... 135
f. Greenland Ice Sheet ... 137
g. Terrestrial permafrost ... 139
sideBAr 5.2: deClAssiFiedhigh-resolUtionvisiBleimAgeryForoBservingthe ArCtiC... 142
h. Lake ice ... 144
i. Sea ice cover ... 145
j. Sea surface temperature ... 147
6. ANTARCTICA ... 149
a. Overview ... 149
b. Atmospheric circulation ... 149
c. Surface staffed and automatic weather station observations ...151
d. Net precipitation (P – E) ... 153
e. 2013/14 seasonal melt extent and duration ... 155
sideBAr 6.1: wAis-tingAwAy? theperiloUsstAteoFthe west AntArCtiC iCe sheet ... 156
f. Southern Ocean... 157
1. Surface temperature and circulation ... 158
2. Upper-ocean stratification ... 158
sideBAr 6.2: the soUthern oCeAnoBservingsystem (soos) ... 159
3. Shelf waters... 160
g. Sea ice extent, concentration, and duration ... 160
1. January–mid-April ...161
2. Mid-April–mid-August ...161
3. Mid-August–mid-November ...161
2. Mid-November–December ... 162
sideBAr 6.3: sUCCessive AntArCtiCseAiCeextentreCordsdUring 2012, 2013, And 2014 ... 163
h. Ozone depletion... 165
7. REGIONAL CLIMATES ... 169
a. Introduction ... 169
b. North America ... 169
1. Canada ... 169
2. United States ...171
3. Mexico ... 172
c. Central America and the Caribbean ...174
1. Central America ...174
2. The Caribbean ...176
d. South America ... 178
1. Northern South America and the tropical Andes ... 178
2. Tropical South America east of the Andes ... 179
sideBAr 7.1: enso ConditionsdUring 2014: theeAstern pACiFiCperspeCtive ... 181
3. Southern South America ... 182
e. Africa ... 184
1. North Africa ... 184
2. West Africa ... 185
3. Eastern Africa ... 187
4. South Africa ... 189
5. Indian Ocean ... 190
f. Europe and the Middle East ...191
1. Overview ...191
2. Central and western Europe ... 193
3. Nordic and Baltic countries ... 194
4. Iberian Peninsula ... 195
5. Mediterranean, Italy, and Balkan States ... 196
6. Eastern Europe ... 197
sideBAr 7.2: devAstAtingFloodsoverthe BAlkAns ... 198
7. Middle East ... 199
g. Asia ...200
1. Overview ...200
2. Russia ... 201
3. East Asia ...205
4. South Asia ...206
5. Southwest Asia...208
h. Oceania ... 209
1. Overview ...209
2. Northwest Pacific and Micronesia ... 210
3. Southwest Pacific ...212
4. Australia ...214
sideBAr 7.3: AUstrAliA'swArmestspringonreCord, ForAseCondyeArrUnning ...216
5. New Zealand ...217
APPENDIX 1: Seasonal Summaries ... 221
APPENDIX 2: Relevant Datasets and Sources ... 225
ACKNOWLEDGMENTS ... 237
ACRONYMS AND ABBREVIATIONS ... 238
REFERENCES ... 240