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Abstract:

For the first time in several years, the El Nino-Southern Oscillation did not dominate regional climate conditions around the globe. A weak La Niña dissipated to ENSO-neutral conditions by spring, and while El Nino appeared to be emerging during summer, this phase never fully developed as sea surface temperatures in the eastern equatorial Pacific uncharacteristically returned to neutral conditions. Nevertheless, other large-scale climate patterns and extreme weather events impacted various regions during the year. A negative phase of the Arctic Oscillation from mid-January to early February contributed to frigid conditions in parts of northern Africa, eastern Europe, and western Asia. A lack of rain during the 2012 wet season led to the worst drought in at least the past three decades for northeastern Brazil. Central North America also experienced one of its most severe droughts on record. The Caribbean observed a very wet dry season and it was the Sahel's wettest rainy season in 50 years. Overall, the 2012 average temperature across global land and ocean surfaces ranked among the 10 warmest years on record. The global land surface temperature alone was also among the 10 warmest on record. In the upper atmosphere, the average stratospheric temperature was record or near-record cold, depending on the dataset. After a 30-year warming trend from 1970 to 1999 for global sea surface temperatures, the period 2000-12 had little further trend. This may be linked to the prevalence of La Niña-like conditions during the 21st century. Heat content in the upper 700 m of the ocean remained near record high levels in 2012. Net increases from 2011 to 2012 were observed at 700-m to 2000-m depth and even in the abyssal ocean below. Following sharp decreases in global sea level in the first half of 2011 that were linked to the effects of La Niña, sea levels rebounded to reach records highs in 2012. The increased hydrological cycle seen in recent years continued, with more evaporation in drier locations and more precipitation in rainy areas. In a pattern that has held since 2004, salty areas of the ocean surfaces and subsurfaces were anomalously salty on average, while fresher areas were anomalously fresh. Global tropical cyclone activity during 2012 was near average, with a total of 84 storms compared with the 1981-2010 average of 89. Similar to 2010 and 2011, the North Atlantic was the only hurricane basin that experienced above-normal activity. In this basin, Sandy brought devastation to Cuba and parts of the eastern North American seaboard. All other basins experienced either near- or below-normal tropical cyclone activity. Only three tropical cyclones reached Category 5 intensity-all in the Western North Pacific basin. Of these, Super Typhoon Bopha became the only storm in the historical record to produce winds greater than 130 kt south of 7°N. It was also the costliest storm to affect the Philippines and killed more than 1000 residents. Minimum Arctic sea ice extent in September and Northern Hemisphere snow cover extent in June both reached new record lows. June snow cover extent is now declining at a faster rate (-17.6% per decade) than September sea ice extent (-13.0% per decade). Permafrost temperatures reached record high values in northernmost Alaska. A new melt extent record occurred on 11-12 July on the Greenland ice sheet; 97% of the ice sheet showed some form of melt, four times greater than the average melt for this time of year. The climate in Antarctica was relatively stable overall. The largest maximum sea ice extent since records begain in 1978 was observed in September 2012. In the stratosphere, warm air led to the second smallest ozone hole in the past two decades. Even so, the springtime ozone layer above Antarctica likely will not return to its early 1980s state until about 2060. Following a slight decline associated with the global financial crisis, global CO 2 emissions from fossil fuel combustion and cement production reached a record 9.5 ± 0.5 Pg C in 2011 and a new record of 9.7 ± 0.5 Pg C is estimated for 2012. Atmospheric CO 2 concentrations increased by 2.1 ppm in 2012, to 392.6 ppm. In spring 2012, for the first time, the atmospheric CO 2 concentration exceeded 400 ppm at 7 of the 13 Arctic observation sites. Globally, other greenhouse gases including methane and nitrous oxide also continued to rise in concentration and the combined effect now represents a 32% increase in radiative forcing over a 1990 baseline. Concentrations of most ozone depleting substances continued to fall.

Registro:

Documento: Artículo
Título:State of the climate in 2012
Autor:Multitudinario:392
Filiación:Department of Earth Sciences, University of Gothenburg, Sweden
Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin Madison, Madison, WI, United States
National Meteorological Service of Mexico, Mexico
Department of Earth and Atmospheric Sciences, City College of New York, New York, NY, United States
Center for Geophysical Research, School of Physics, University of Costa Rica, San José, Costa Rica
Met Office Hadley Centre, Exeter, United Kingdom
Centro de Ciencias Do Sistema Terrestre (CCST), Instituto Nacional de Pesquisas Espaciais (INPE), Cachoeira Paulista, Sao Paulo, Brazil
Kenya Meteorological Department (KMD), Nairobi, Kenya
Direction de la Meteorologie Nationale de Madagascar, Tananarive, Madagascar
NOAA/NESDIS National Oceanographic Data Center, Silver Spring, MD, United States
University Corporation for Atmospheric Research, Boulder, CO, United States
Centro de Previsão de Tempo e Estudos Climáticos, INPE, Cachoeira Paulista, Sao Paulo, Brazil
Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, United States
Instituto Nacional de Meteorología e Hidrología de Venezuela (INAMEH), Caracas, Venezuela
NOAA/NESDIS National Climatic Data Center, Asheville, NC, United States
Arctic and Antarctic Research Institute, St. Petersburg, Russian Federation
IGAD Climate Prediction and Applications Centre (ICPAC), Nairobi, Kenya
NOAA/OAR Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, United States
Argentine Naval Hydrographic Service, Buenos Aires, Argentina
Universidad Complutense de Madrid (UCM), Spain
Bureau of Meteorology, Australia
Global Precipitation Climatology Centre, Deutscher Wetterdienst (DWD), Offenbach, Germany
Oregon State University, OR, United States
NOAA/NWS Climate Prediction Center, College Park, MD, United States
European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom
Biospherical Instruments, San Diego, CA, United States
National Oceanography Centre, Southampton, United Kingdom
Dirección Nacional de Meteorología, División de Climatología, Uruguay
Antarctic Climate and Ecosystems Cooperative Research Centre, Hobart, Australia
CSIRO Marine and Atmospheric Laboratories, Hobart, Australia
Deutscher Wetterdienst, Germany
NOAA/NWS National Hurricane Center, Miami, FL, United States
Mauritius Meteorological Services, NASA/GSFC, Global Modeling and Assimilation Office, Greenbelt, MD, United States
Geological Survey of Denmark and Greenland, Copenhagen, Denmark
Byrd Polar Research Center, Ohio State University, Columbus, OH, United States
WMO Atmospheric Environment Research Division, Geneva, Switzerland
Environment Canada, Climate Research Division, Montreal, QC, Canada
Climate Research Division, Environment Canada, Downsview, ON, Canada
NOAA/OAR Earth System Research Laboratory, Boulder, CO, United States
Russian Institute for Hydrometeorological Information, Obninsk, Russian Federation
Geological Survey of Canada, Natural Resources Canada, Ottawa, ON, Canada
University of Bremen, Bremen, Germany
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Department of Physics, University of the West Indies, Jamaica
Ocean University of China, Qingdao, China
Danish Meteorological Institute, Copenhagen, Denmark
Servicio Nacional de Meteorología e Hidrología de Bolivia (SENAMHI), La Paz, Bolivia
College of Marine Science, University of South Florida, St. Petersburg, FL, United States
Tanzania Meteorological Agency, Dar es Salaam, Tanzania
National Institute of Water and Atmospheric Research, Ltd., Auckland, New Zealand
University of Bremen FB1, Bremen, Germany
NASA/GSFC, Global Modeling and Assimilation Office, Greenbelt, MD, United States
Geology Department, University Centre in Svalbard, UNIS, Norway
Department of Geosciences, University of Oslo, Oslo, Norway
University of Alabama in Huntsville, Huntsville, AL, United States
Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA-CNR-UVSQ, Gif-sur-Yvette, France
CPTEC/INPE, Center for Weather Forecasts and Climate Studies, Cachoeira Paulista, Brazil
Department of Geography, Trent University, Peterborough, ON, Canada
British Antarctic Survey, Cambridge, United Kingdom
School of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, AK, United States
Scottish Marine Institute Oban, Argyll, United Kingdom
Republic Hydrometeorological Service of Serbia, Belgrade, Serbia
Department of Earth Sciences, Faculty of Earth and Life Sciences, VU University Amsterdam, Amsterdam, Netherlands
Nigerian Meteorological Agency, Abuja, Nigeria
Turkish State Meteorological Service, Ankara, Turkey
Environment Canada, Climate Research Division, Toronto, ON, Canada
NOAA/NESDIS National Climatic Data Center, Silver Spring, MD, United States
Earth and Space Research, Seattle, WA, United States
Cooperative Institute for Marine and Atmospheric Science, Miami, FL, United States
Department of Geodesy and Geoinformation, Vienna University of Technology, Vienna, Austria
Earth Cryosphere Institute, Tumen, Russian Federation
Interdisciplinary Centre on Climate Change, Department of Geography and Environmental Management, University of Waterloo, Waterloo, ON, Canada
Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States
Institute for Meteorology und Climate Research (IMK), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
Instituto de Hidrología de Meteorología y Estudios Ambientales de Colombia (IDEAM), Bogotá, Colombia
Department for Earth System Science, University of California, Irvine, CA, United States
Goddard Earth Sciences Data and Information Services Center (ADNET), NASA, Greenbelt, MD, United States
Oceanography Department, University of Cape Town, Rondebosh, South Africa
NOAA/OAR Pacific Marine Environmental Laboratory, Seattle, WA, United States
CUNY Environmental CrossRoads Initiative, City College of New York at CUNY, New York, NY, United States
Environment Canada, Measurements and Analysis Research Section, Toronto, ON, Canada
Environment Canada, Canadian Hurricane Centre, Dartmouth, NS, Canada
Department of Geography, Ohio University, Athens, OH, United States
NASA Goddard Space Flight Center, Greenbelt, MD, United States
Bureau of Meteorology, Melbourne, Australia
Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB, Canada
Norwegian Polar Institute, Fram Centre, Tromsø, Norway
Department of Meteorology, University of Nairobi, Kenya
European Commission, Joint Research Centre, Institute for Environment and Sustainability, Italy
Forschungszentrum Jülich, Jülich, Germany
NOAA/NWS Weather Forecast Office, Guam
Science Systems Applications, Inc., Hampton, VA, United States
Climate Prediction Division, Japan Meteorological Agency, Tokyo, Japan
Finnish Meteorological Institute, Helsinki, Finland
Massachusetts Institute of Technology, Boston, MA, United States
Remote Sensing Systems, Santa Rosa, CA, United States
UCAR COSMIC, Boulder, CO, United States
Scripps Institution of Oceanography, University of California, San Diego, San Diego, CA, United States
Sea Level Research, Liverpool, United Kingdom
Climate Research Division, Armstatehydromet, Armenia
Institute of Marine Research, Bergen, Norway
Servicio Nacional de Meteorología e Hidrología de Perú (SENAMHI), Lima, Peru
Department of Geological Sciences, Stockholm University, Stockholm, Sweden
Office of Naval Research, Arlington, VA, United States
Rosenstiel School of Marine and Atmospheric Science, Miami, FL, United States
Norwegian Radiation Protection Authority, Østerås, Norway
Météo France, Reunion
Direction de la Météorologie Nationale du Maroc, Rabat, Morocco
King's College London, London, United Kingdom
Max-Planck-Institute for Chemistry, Mainz, Germany
African Centre of Meteorological Applications for Development, Niamey, Niger
Helmholtz-Centre for Ocean Research Kiel (GEOMAR), Kiel, Germany
Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, Madison, WI, United States
NOAA/NESDIS Center for Satellite Applications and Research, Madison, WI, United States
Islamic Republic of Iranian Meteorological Organization (IRIMO), Iran
Japan Agency for Marine-Earth Science and Technology, Tokyo, Japan
Korea Polar Research Institute, Incheon, South Korea
NOAA/NESDIS Center for Satellite Applications and Research, Fort Collins, CO, United States
All-Russian Research Institute of Hydrometeorological Information, World Data Center, Obninsk, Russian Federation
NASA Langley Research Center, Hampton, VA, United States
Woods Hole Oceanographic Institution, Woods Hole, MA, United States
South African Weather Service, Pretoria, South Africa
Finnish Meteorological Institute, Arctic Research Centre, Sodankylä, Finland
University of Guam, Mangilao, Guam
Space Science and Engineering Center, University of Wisconsin-Madison, Madison, WI, United States
Applied Physics Laboratory, University of Washington, Seattle, WA, United States
NOAA/NESDIS Laboratory for Satellite Altimetry, Silver Spring, MD, United States
Antarctic Climate and Ecosystems Cooperative Research Center (ACE CRC), University of Tasmania, Hobart, TAS, Australia
National Taiwan University, Taipei, Taiwan
School of Civil and Environmental Engineering, University of New South Wales, Sydney, Australia
Department of Geography, University of Cincinnati, Cincinnati, OH, United States
National Climate Center, China Meteorological Administration, Beijing, China
NOAA/NWS National Center for Environmental Prediction, College Park, MD, United States
Centre for Australian Weather and Climate Research, Melbourne, Australia
Joint Institute for Marine and Atmospheric Research, University of Hawaii, Honolulu, HI, United States
AOS/CIMSS University of Wisconsin Madison, Madison, WI, United States
KNMI (Royal Netherlands Meteorological Institute), De Bilt, Netherlands
Northwest Research Associates, Socorro, NM, United States
New Mexico Institute of Mining and Technology, Socorro, NM, United States
Max-Planck-Institut für Meteorologie, Hamburg, Germany
NOAA/NESDIS National Climatic Data Center, Honolulu, HI, United States
Centro Internacional Para la Investigación Del Fenómeno El Niño (CIIFEN), Guayaquil, Ecuador
Australian Antarctic Division, Antarctic Climate and Ecosystems Cooperative Research Center (ACE CRC), University of Tasmania, Hobart, TAS, Australia
CSIRO Land and Water, Canberra, Australia
National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States
Environmental Hydraulic Institute, Universidad de Cantabria, Santander, Spain
Joint Institute Marine and Atmospheric Research, University of Hawaii, Honolulu, HI, United States
School of Geosciences, University of Edinburgh, United Kingdom
Department of Geography, University of Georgia, Athens, GA, United States
Lacunosa Weather Services, Karlsruhe, Germany
Department of Aerospace Engineering Sciences, University of Colorado, Boulder, CO, United States
Laboratory for Atmospheres, NASA Goddard Space Flight Center, Greenbelt, MD, United States
Climate Monitoring Satellite Application Facility, Deutscher Wetterdienst (DWD), Offenbach, Germany
Department of Geography, University of Zürich, Zürich, Switzerland
MIREKO, Syktyvkar, Russian Federation
Deutscher Wetterdienst (DWD), Offenbach, Germany
WMO RA VI Regional Climate Centre on Climate Monitoring, Offenbach, Germany
Department of Meteorology, University of Nairobi, Nairobi, Kenya
Egyptian Meteorological Authority, Cairo, Egypt
Institute of Meteorology and Hydrology, National Agency for Meteorology, Hydrology and Environmental Monitoring, Ulaanbaatar, Mongolia
Korea Meteorological Administration (KMA), South Korea
Nichols College, Dudley, MA, United States
Departamento de Ciencias de la Atmósfera y Los Océanos, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
USACE, ERDC, Cold Regions Research and Engineering Laboratory, Hanover, NH, United States
Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
Melbourne University, Melbourne, Australia
Environment Canada, Toronto, Canada
European Commission, Joint Research Centre, Institute for Environment and Sustainability, Italy
School of Oceanography, University of Washington, Seattle, WA, United States
Centre for Terrestrial Climate Dynamics, University of Sheffield, Sheffield, United Kingdom
Dirección Meteorológica de Chile, Chile
Alfred Wegener Institute, Bremerhaven, Germany
Atmospheric Science and Meteorological Research Center (ASMERC), Tehran, Iran
Direction de la Météorologie Nationale de Madagascar, Tananarive, Madagascar
National Atmospheric Research Laboratory, Gadanki, India
Instituto Dom Luiz, Universidade de Lisboa Campo Grande, Lisboa, Portugal
All-Russian Research Institute of Hydrometeorological Information, Obninsk, Russian Federation
Australian Bureau of Meteorology, Centre for Australian Weather and Climate Research, TAS, Australia
Victoria University of Wellington, New Zealand
Indian Institute of Tropical Meteorology, Pune, India
Rutgers University, Piscataway, NJ, United States
Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States
University of Paris, Paris, France
Instituto Nacional de Meteorología, INMET, Brasilia, DF, Brazil
NASA Jet Propulsion Laboratory, Pasadena, CA, United States
GFZ German Research Centre for Geosciences, Potsdam, Germany
National Snow and Ice Data Center, University of Colorado, Boulder, CO, United States
Cooperative Institute for Climate and Satellites, NC State University, Asheville, NC, United States
International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, AK, United States
Turkish State Meteorological Service, Kalaba, Ankara, Turkey
National Institute for Space Research, Sao Jose dos Compos-SP, Brazil
Department of Geography, George Washington University, Washington, DC, United States
University of California, Santa Barbara, Santa Barbara, CA, United States
NOAA/NWS Office of Climate, Water, and Weather Services, Silver Spring, MD, United States
Division of Meteorology, Department of Water Resources, Banjul, Gambia
National Institute of Meteorology and Hydrology, BAS, Sofia, Bulgaria
School of Earth Sciences, University of Melbourne, Melbourne, Australia
Servicio Meteorológico Nacional, Buenos Aires, Argentina
NOAA/OAR Earth System Research Laboratory, Physical Sciences Division, Boulder, CO, United States
Cooperative Institute for Research in Environmental Sciences, Climate Diagnostics Center, Boulder, CO, United States
NOAA/NESDIS Center for Satellite Applications and Research, College Park, MD, United States
Cooperative Institute for Climate and Satellites, University of Maryland, College Park, MD, United States
India Meteorological Department, Pune, India
Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, United States
Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
DWD (German Weather Service), Hohenpeissenberg, Germany
Norwegian Institute for Air Research, Kjeller, Norway
NOAA/NOS Center for Operational Oceanographic Products and Services, Honolulu, HI, United States
NOAA/NWS Central Pacific Hurricane Center, Honolulu, HI, United States
NOAA/NWS Weather Forecast OFfice, Fairbanks, AK, United States
Yale University, New Haven, CT, United States
Australian Bureau of Meteorology, Melbourne, Australia
Caribbean Institute for Meteorology and Hydrology, Bridgetown, Barbados
Aerospace Engineering Sciences, University of Colorado, Boulder, CO, United States
Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Netherlands
Department of Geography, University of Lisbon, Portugal
Department of Physics, Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States
Earth Observing Laboratory, NCAR, Boulder, CO, United States
Department of Atmospheric and Environmental Sciences, University at Albany, SUNY, Albany, NY, United States
Joint Institute for the Study of the Atmosphere and Ocean, University of Washington, Seattle, WA, United States
Department of Geography and Anthropology, LA State University, Baton Rouge, LA, United States
Fisheries and Oceans Canada, Institute of Ocean Sciences, Sidney, BC, Canada
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Alaska Division of Geological and Geophysical Surveys, Fairbanks, AK, United States
Department of Physics, University of Colorado Boulder, Boulder, CO, United States
School of Geographical Sciences, University of Bristol, Bristol, United Kingdom
Tokyo Climate Center, Climate Prediction Division, Japan Meteorological Agency, Tokyo, Japan
Beijing Climate Center, Beijing, China
Cold and Arid Regions Environmental and Engineering Research Institute, Lanzhou, China
Palabras clave:Eastern equatorial Pacific; El Nino southern oscillation; Fossil fuel combustion; Global financial crisis; Ozone depleting substances; Sea surface temperature (SST); Stratospheric temperature; Tropical cyclone activity; Atmospheric radiation; Atmospheric temperature; Atmospherics; Carbon dioxide; Drought; Fuels; Glaciers; Greenhouse gases; Hurricanes; Methane; Nitrogen oxides; Ozone; Ozone layer; Sea ice; Sea level; Snow; Storms; Upper atmosphere; Climatology
Año:2013
Volumen:94
Número:8
Página de inicio:S1
Página de fin:S238
DOI: http://dx.doi.org/10.1175/2013BAMSStateoftheClimate.1
Título revista:Bulletin of the American Meteorological Society
Título revista abreviado:Bull. Am. Meteorol. Soc.
ISSN:00030007
CODEN:BAMIA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00030007_v94_n8_pS1_Multitudinario

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Citas:

---------- APA ----------
(2013) . State of the climate in 2012. Bulletin of the American Meteorological Society, 94(8), S1-S238.
http://dx.doi.org/10.1175/2013BAMSStateoftheClimate.1
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Multitudinario:392. "State of the climate in 2012" . Bulletin of the American Meteorological Society 94, no. 8 (2013) : S1-S238.
http://dx.doi.org/10.1175/2013BAMSStateoftheClimate.1
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Multitudinario:392. "State of the climate in 2012" . Bulletin of the American Meteorological Society, vol. 94, no. 8, 2013, pp. S1-S238.
http://dx.doi.org/10.1175/2013BAMSStateoftheClimate.1
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Multitudinario:392. State of the climate in 2012. Bull. Am. Meteorol. Soc. 2013;94(8):S1-S238.
http://dx.doi.org/10.1175/2013BAMSStateoftheClimate.1