| Acronym | 
Sense | 
Language | 
Topics | 
| GSMaP | 
Global Satellite Mapping of Precipitation | 
In English | 
→ Astronautics → Meteorology, climatology → Hydrology | 
| GSSPs | 
Global Boundary Stratotype Sections and Points | 
In English | 
→ Stratigraphy | 
| HARIMAU | 
Hydrometeorological Array for ISV-Monsoon Automonitoring (www.jamstec.go.jp/iorgc/harimau/) | 
In English | 
→ Meteorology, climatology → Hydrology | 
| HNMS | 
Hellenic National Meteorological Service | 
In English | 
→ Meteorology, climatology → Greece | 
| HOLIVAR | 
Holocene Climate Variability | 
In English | 
→ Meteorology, climatology | 
| HOME | 
Hawaii Ocean-Mixing Experiment | 
In English | 
→ Marine research, oceanography | 
| HOPS | 
Harvard Ocean Prediction System (http://mseas.mit.edu/archive/HOPS/) | 
In English | 
→ Marine research, oceanography | 
| HWRF | 
Hurricane and Weather Research Forecasting | 
In English | 
→ Meteorology, climatology | 
| HyARC | 
Hydrospheric Atmospheric Research Center | 
In English | 
→ Research institutes → Marine research, oceanography → Hydrology → Earth sciences | 
| HYCOM | 
Hybrid Coordinate Ocean Model (http://hycom.rsmas.miami.edu) | 
In English | 
→ Marine research, oceanography | 
| IAMAS | 
International Association of Meteorology and Atmospheric Sciences (www.iamas.org) 
= AIMSA | Association Internationale de Météorologie et des Sciences de l'Atmosphère | In French  
 | 
In English | 
→ Associations → Meteorology, climatology | 
| IAPSO | 
International Association for Physical Sciences of the Oceans | 
In English | 
→ Associations → Marine research, oceanography | 
| IARC | 
International Arctic Research Center (www.iarc.uaf.edu) | 
In English | 
→ Associations → Meteorology, climatology | 
| IASI | 
Infrared Atmospheric Sounding Interferometer | 
In English | 
→ Meteorology, climatology | 
| IAVCEI | 
International Association of Volcanology and Chemistry of the Earth's Interior (www.iavcei.org) | 
In English | 
→ Associations → 55121 → Geochemistry | 
| ICES | 
International Council for the Exploration of the Seas (www.ices.inst.dk) | 
In English | 
→ Organizations and associations → Marine research, oceanography | 
| ICORSMI | 
Interagency Committee on Ocean Science and Resource Management Integration | 
In English | 
→ Marine research, oceanography | 
| ICS | 
International Commission on Stratigraphy | 
In English | 
→ Organizations and associations → Stratigraphy | 
| IFM | 
Institut Français de la Mer | 
In French | 
→ Organizations and associations → Threats to the environment → Marine research, oceanography → France | 
| IFREMER | 
Institut Français de Recherche pour l'Exploitation de la Mer (www.ifremer.fr) | 
In French | 
→ Research institutes → Marine research, oceanography → France | 
| IfT | 
Institut für Troposphärenforschung | 
In German | 
→ Meteorology, climatology | 
| IJBm | 
International Journal of Biometeorology | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| IJCli | 
International Journal of Climatology | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| IJMHG | 
Indian Journal of Meteorology, Hydrology, and Geophysics | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology → Hydrology → Geophysics → India | 
| IMBER | 
Integrated Marine Biogeochemistry and Ecosystem Research (www.imber.info) | 
In English | 
→ Ecology → Geochemistry → Marine research, oceanography | 
| IMC | 
Instrument Meteorological Conditions | 
In English | 
→ Aeronautics, aircraft → Meteorology, climatology | 
| IMO | 
International Maritime Organization 
= IMO | Internacia Mar-Organizo | In Esperanto  
= OMI | Organisation Maritime Internationale | In French  
 | 
In English | 
→ International relations → Marine research, oceanography → 6295 → Agricultural sciences | 
| IMO | 
Internacia Mar-Organizo 
= OMI (look above)
 | 
In Esperanto | 
→ International relations → Marine research, oceanography → 6295 → Agricultural sciences | 
| IMO | 
Icelandic Meteorological Office | 
In English | 
→ Meteorology, climatology | 
| IMP | 
Institut für Meteorologie und Physik | 
In German | 
→ Physics → Meteorology, climatology | 
| IMP | 
Instituto de Meteorologia de Portugal (www.meteo.pt) | 
In Portuguese | 
→ Meteorology, climatology → Portugal | 
| INA | 
International Nanoplankton Association | 
In English | 
→ Associations → Marine research, oceanography → Palaeontology → Zoology | 
| INDUS | 
Individualisiertes, Dynamisches Unwettersystem | 
In German | 
→ Meteorology, climatology | 
| INGV | 
Istituto Nazionale di Geofisica e Vulcanologia (www.ingv.it) | 
In Italian | 
→ Research institutes → Geophysics → 55121 → Italia | 
| INM | 
Instituto Nacional de Meteorologia | 
In Spanish | 
→ Meteorology, climatology | 
| INMARSAT | 
International Maritime Satellite | 
In English | 
→ Marine research, oceanography → Astronautics | 
| INOCAR | 
Instituto Oceanográfico de la Armada | 
In Spanish | 
→ Marine research, oceanography | 
| INTMK | 
Itogi Nauki i Tekhniki Seriia Meteorologiia i Klimatologiia | 
In Russian | 
→ Serial publications, periodicals → Meteorology, climatology | 
| INTSO | 
Itogi Nauki i Tekhniki Seriia Okeanologiia | 
In Russian | 
→ Serial publications, periodicals → Marine research, oceanography | 
| IOC | 
Intergovernmental Oceanographic Commission | 
In English | 
→ Organizations and associations → Marine research, oceanography | 
| IODP | 
Integrated Ocean Drilling Project | 
In English | 
→ Marine research, oceanography | 
| IOM | 
Interoceanmetal Joint Organization | 
In English | 
→ Organizations and associations → Marine research, oceanography → Mining | 
| IOM | 
Inverse Ocean Modeling | 
In English | 
→ Marine research, oceanography | 
| IOMAC | 
Indian Ocean Marine Affairs Cooperation | 
In English | 
→ International relations → Marine research, oceanography → Fishing, hunting | 
| IOPAN | 
Instytut Oceanologii Polskiej Akademii Nauk (www.iopan.gda.pl) | 
In Polish | 
→ Research institutes → Marine research, oceanography → Poland | 
| IORGC | 
Institute of Observational Research for Global Change (www.jamstec.go.jp/iorgc/) | 
In English | 
→ Research institutes → Meteorology, climatology → Japan | 
| IOT | 
Institute for Ocean Technology 
= ITO | Institut des Technologies Océaniques | In French  
 | 
In English | 
→ Marine research, oceanography | 
| IPCC | 
Intergovernmental Panel on Climate Change (https://www.ipcc.ch) | 
In English | 
→ Organizations and associations → United Nations → Meteorology, climatology → Threats to the environment | 
| IPRC | 
International Pacific Research Center (http://iprc.soest.hawaii.edu) | 
In English | 
→ Research institutes → Meteorology, climatology | 
| IRM | 
Institut Royal Météorologique de Belgique 
= KMI | Koninklijk Meteorologisch Instituut | In Dutch  
 | 
In French | 
→ Meteorology, climatology → Belgium | 
| IRMB | 
Institut Royal Météorologique de Belgique | 
In French | 
→ Meteorology, climatology → Belgium | 
| IRMBP | 
Institut Royal Météorologique de Belgique, Publications | 
In French | 
→ Serial publications, periodicals → Meteorology, climatology → Belgium | 
| ISA | 
International Seabed Authority (www.isa.org.jm) | 
In English | 
→ Organizations and associations → International relations → Marine research, oceanography → Mining | 
| ISCCP | 
International Satellite Cloud Climatology Project (http://isccp.giss.nasa.gov) | 
In English | 
→ Astronautics → Meteorology, climatology | 
| ISM | 
Institut Supérieur Maritime | 
In French | 
→ Specialized or polytechnical colleges → Marine research, oceanography → 627 → Vehicle engineering | 
| ITO | 
Institut des Technologies Océaniques 
= IOT (look above)
 | 
In French | 
→ Marine research, oceanography | 
| IUEM | 
Institut Universitaire Européen de la Mer | 
In French | 
→ Marine research, oceanography | 
| JAerS | 
Journal of Aerosol Science | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| JAMSTEC | 
Japan Agency for Marine-Earth Science and Technology (www.jamstec.go.jp) | 
In English | 
→ Research institutes → Marine research, oceanography → Japan | 
| JApMe | 
Journal of Applied Meteorology | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| JASMINE | 
Joint Air-Sea Monsoon Interaction Experiment | 
In English | 
→ Meteorology, climatology | 
| JAtC | 
Journal of Atmospheric Chemistry | 
In English | 
→ Serial publications, periodicals → Chemistry → Meteorology, climatology | 
| JAtOT | 
Journal of Atmospheric and Oceanic Technology | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology → Marine research, oceanography | 
| JATP | 
Journal of Atmospheric and Terrestrial Physics | 
In English | 
→ Serial publications, periodicals → Geophysics → Meteorology, climatology | 
| JAtS | 
Journal of Atmospheric Sciences | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| JCAM | 
Journal of Climate and Applied Meteorology | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| JCli | 
Journal of Climate | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| JClim | 
Journal of Climatology | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| JCOPE | 
Japan Coastal Ocean Predictability Experiment | 
In English | 
→ Marine research, oceanography | 
| JCSEPA | 
Japanese Cloud Seeding Experiment for Precipitation Augmentation | 
In English | 
→ Marine research, oceanography | 
| JGeo | 
Journal of Geodynamics | 
In English | 
→ Serial publications, periodicals → Geophysics → 55124 | 
| JGOFS | 
Joint Global Ocean Flux Study | 
In English | 
→ Marine research, oceanography → Threats to the environment | 
| JGOFS | 
Joint Global Ocean Flux Study | 
In English | 
→ Marine research, oceanography | 
| JMA | 
Japan Meteorological Agency (www.jma.go.jp) | 
In English | 
→ Central administration → Meteorology, climatology → Japan | 
| JMS | 
Journal of Marine Systems | 
In English | 
→ Serial publications, periodicals → Threats to the environment → Marine research, oceanography | 
| JO | 
Journal of Oceanography | 
In English | 
→ Serial publications, periodicals → Marine research, oceanography | 
| JODC | 
Japan Oceanographic Data Center (www.jodc.go.jp) | 
In English | 
→ Research institutes → Marine research, oceanography → Japan | 
| JPO | 
Journal of Physical Oceanography | 
In English | 
→ Serial publications, periodicals → Marine research, oceanography | 
| JReAt | 
Journal de Recherches Atmosphériques | 
In French | 
→ Serial publications, periodicals → Meteorology, climatology | 
| JSAPJ | 
Japan Society of Air Pollution Journal | 
In English | 
→ Serial publications, periodicals → Environmental protection → Threats to the environment → Meteorology, climatology | 
| JVGR | 
Journal of Volcanology and Geothermal Research | 
In English | 
→ Serial publications, periodicals → 55121 | 
| JWUDF | 
Jahns Wöchentliche Unterhaltungen für Dilettanten und Freunde der Astronomie, Geographie und Witterungskunde | 
In German | 
→ Serial publications, periodicals → Astronomy → Meteorology, climatology → Geography | 
| KAM | 
Kwetsbaarheid, Adaptatie, Mitigatie | 
In Dutch | 
→ Social sciences → Meteorology, climatology | 
| KEA | 
Klimaschutz- und Energieagentur | 
In German | 
→ Meteorology, climatology → Energy economics | 
| KliBA | 
Klimaschutz- und Energie-Beratungsagentur | 
In German | 
→ Meteorology, climatology → Energy economics | 
| KMI | 
Koninklijk Meteorologisch Instituut 
= IRM (look above)
 | 
In Dutch | 
→ Meteorology, climatology → Belgium | 
| KNMI | 
Koninklijk Nederlands Meteorologisch Instituut (www.knmi.nl) | 
In Dutch | 
→ Research institutes → Meteorology, climatology → Netherlands | 
| KOPS | 
Korea Ocean Prediction System (http://kops.kordi.re.kr) | 
In English | 
→ Marine research, oceanography → Meteorology, climatology | 
| LACIS | 
Leipzig Aerosol Cloud Interaction Simulator | 
In English | 
→ Meteorology, climatology | 
| LAF | 
Lagged Average Forecast | 
In English | 
→ Computer simulation → Meteorology, climatology | 
| LAF | 
Lagged Average Forecasting | 
In English | 
→ Computer simulation → Meteorology, climatology | 
| LEGMA | 
Latvian Environment, Geological and Meterological Agency | 
In English | 
→ Environmental protection → Threats to the environment → Earth sciences → Meteorology, climatology | 
| LIS | 
Lightning Imaging Sensor | 
In English | 
→ Meteorology, climatology | 
| LISA | 
Laboratoire Interuniversitaire des Systèmes Atmosphériques (www.lisa.univ-paris12.fr) | 
In French | 
→ Research institutes → Meteorology, climatology → Threats to the environment | 
| LLC | 
Low Level Circulation | 
In English | 
→ Meteorology, climatology | 
| LMD | 
Laboratoire de Météorologie Dynamique | 
In French | 
→ Research institutes → Meteorology, climatology | 
| LOICZ | 
Land-Ocean Interactions in the Coastal Zone (www.loicz.org) | 
In English | 
→ Meteorology, climatology → Marine research, oceanography | 
| LPLWS | 
Launch Pad Lightning Warning System | 
In English | 
→ Meteorology, climatology → Astronautics | 
| LRTAP | 
Long-range Transboundary Air Pollution | 
In English | 
→ Meteorology, climatology | 
| LSCE | 
Laboratoire des Sciences du Climat et de l'Environnement | 
In French | 
→ Threats to the environment → Meteorology, climatology | 
| LWS | 
Lightning Warning System | 
In English | 
→ Meteorology, climatology | 
| MAHASRI | 
Monsoon Asian Hydro-Atmosphere Scientific Research and Prediction Initiative (http://mahasri.cr.chiba-u.ac.jp) | 
In English | 
→ Meteorology, climatology → Hydrology | 
| MAP | 
Meteorology and Atmospheric Physics | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| MAPS | 
Measurement of Air Pollution from Satellites | 
In English | 
→ Environmental protection → Meteorology, climatology → Astronautics | 
| MarGR | 
Marine Geophysical Researches | 
In English | 
→ Serial publications, periodicals → Geophysics → Marine research, oceanography | 
| MARNIS | 
Maritime Navigation and Information Services | 
In English | 
→ Marine research, oceanography → Transport and postal services | 
| MAT | 
Meteorological Atmospheric Turbulence | 
In English | 
→ Meteorology, climatology | 
| MCC | 
Mesoscale Convective Complex | 
In English | 
→ Meteorology, climatology | 
| MDAS | 
Meteorological Data Acquisition System | 
In English | 
→ Data → Meteorology, climatology | 
| MeApp | 
Meteorological Applications | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| MEMMS | 
Modélisation des Écosystemes Marins et Monitoring par Satellites | 
In French | 
→ Threats to the environment → Marine research, oceanography → Astronautics | 
| MERSAT | 
Meteorology and Earth Observation Satellite | 
In English | 
→ Astronautics → Earth sciences → Meteorology, climatology | 
| MERSEA | 
Marine EnviRonment and Security for the European Area (www.mersea.eu.org) | 
In English | 
→ Marine research, oceanography | 
| MeSJJ | 
Meteorological Society of Japan Journal | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| MetMa | 
Meteorological Magazine | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| MetRu | 
Meteorologische Rundschau | 
In German | 
→ Serial publications, periodicals → Meteorology, climatology | 
| MetZe | 
Meteorologische Zeitschrift | 
In German | 
→ Serial publications, periodicals → Meteorology, climatology | 
| MICOM | 
Miami Isopycnic Coordinate Ocean Model (http://oceanmodeling.rsmas.miami.edu/micom/) | 
In English | 
→ Marine research, oceanography → United States | 
| MIDDS | 
Meteorological Interactive Data Display System | 
In English | 
→ Human-computer interaction → Meteorology, climatology | 
| MIRC | 
Marine Information Research Center (www.mirc.jha.or.jp) | 
In English | 
→ Research institutes → Marine research, oceanography → Japan | 
| MIROC | 
Model for Interdisciplinary Research On Climate | 
In English | 
→ Meteorology, climatology | 
| MISMO | 
Mirai Indian ocean cruise for the Study of the MJO-convection Onset (www.jamstec.go.jp/iorgc/mismo/) | 
In English | 
→ Marine research, oceanography | 
| MJO | 
Madden-Julian Oscilation | 
In English | 
→ Meteorology, climatology | 
| MJO | 
Madden-Julian Oscillation 
= OMJ | Oscillation de Madden-Julian | In French  
 | 
In English | 
→ Meteorology, climatology | 
| MLE | 
Mesoscale Lightning Experiment | 
In English | 
→ Meteorology, climatology | 
| MMO | 
Monda Meteologia Organizo (www.wmo.int) 
= WMO | World Meteorological Organization | In English  
= OMM | Organisation Météorologique Mondiale | In French  
 | 
In Esperanto | 
→ Organizations and associations → Meteorology, climatology → United Nations | 
| MOC | 
Meridional Overturning Circulation | 
In English | 
→ Meteorology, climatology → Hydrology | 
| MOCS | 
Multichannel Ocean Color Sensor | 
In English | 
→ Marine research, oceanography | 
| MOLARCH | 
MOLecular ARCHIves of climatic history: exploring patterns of genomic differentiation in endemic species radiations of ancient lakes | 
In English | 
→ Genetics → Meteorology, climatology | 
| MOM | 
Modular Ocean Model | 
In English | 
→ Meteorology, climatology | 
| MOPITT | 
Measurements of Pollution in the Troposphere | 
In English | 
→ Environmental protection → Meteorology, climatology | 
| MORB | 
Mid-Ocean Ridge Basalt | 
In English | 
→ Petrology → 55121 | 
| MPC | 
Meteorological Prediction Center | 
In English | 
→ Meteorology, climatology | 
| MRCC | 
Modéle Régional Climatique Canadien | 
In French | 
→ Meteorology, climatology → Canada | 
| MRI | 
Meteorological Research Institute | 
In English | 
→ Research institutes → Meteorology, climatology | 
| MSC | 
Meteorological Service of Canada | 
In English | 
→ Central administration → Meteorology, climatology → Canada | 
| MSCTN | 
Meteorological Satellite Center Technical Note | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology → Astronautics | 
| MSJ | 
Meteorological Society of Japan (wwwsoc.nii.ac.jp/msj/) | 
In English | 
→ Organizations and associations → Meteorology, climatology | 
| MSLP | 
Mean Sea Level Pressure | 
In English | 
→ Meteorology, climatology | 
| MVO | 
Montserrat Volcano Observatory (www.mvo.ms) | 
In English | 
→ Research institutes → 55121 | 
| MWRv | 
Monthly Weather Review | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| NAM | 
North American Mesoscale (Model) | 
In English | 
→ Meteorology, climatology | 
| NAO | 
North Atlantic Oscillation | 
In English | 
→ Meteorology, climatology | 
| NARR | 
North American Regional Reanalysis | 
In English | 
→ Meteorology, climatology | 
| NASOH | 
North American Society for Oceanic History | 
In English | 
→ Organizations and associations → Marine research, oceanography → History | 
| NCAR | 
National Center for Atmospheric Research (www.ncar.ucar.edu) | 
In English | 
→ Research institutes → Meteorology, climatology | 
| NEBROC | 
NEtherlands BRemen OCeanography | 
In English | 
→ Marine research, oceanography | 
| NEC | 
North Equatorial Current | 
In English | 
→ Meteorology, climatology | 
| NEMURO | 
North Pacific Ecosystem Model for Understanding Regional Oceanography | 
In English | 
→ Threats to the environment → Marine research, oceanography | 
| NHC | 
National Hurricane Center (www.nhc.noaa.gov) | 
In English | 
→ Central administration → Meteorology, climatology → Natural disasters | 
| NICAM | 
Nonhydrostatic ICosahedral Atmospheric Model (www.nicam.jp) | 
In English | 
→ Meteorology, climatology → Japan | 
| NIOZ | 
(Koninklijk) Nederlands Instituut voor Onderzoek der Zee | 
In Dutch | 
→ Marine research, oceanography → Netherlands | 
| NMC | 
National Meteorological Center | 
In English | 
→ Meteorology, climatology | 
| NMI | 
National Maritime Institute | 
In English | 
→ Marine research, oceanography → 627 → 6295 | 
| NOAA | 
National Oceanic and Atmospheric Administration | 
In English | 
→ Central administration → Marine research, oceanography → Meteorology, climatology | 
| NODC | 
National Oceanographic Data Center (www.nodc.noaa.gov) | 
In English | 
→ Data → Marine research, oceanography | 
| NOGAPS | 
Navy Operational Global Prediction Center System | 
In English | 
→ Meteorology, climatology | 
| NOOP | 
National Oceanographic Partnership Program | 
In English | 
→ Marine research, oceanography | 
| NORGES | 
Network of Offshore Records of Geology and Stratigraphy | 
In English | 
→ Records management → Earth sciences → Stratigraphy | 
| NOSL | 
Night/Day Optical Survey Of Thunderstorm Lightning | 
In English | 
→ Meteorology, climatology | 
| NOSS | 
National Oceanic Satellite System | 
In English | 
→ Marine research, oceanography → Astronautics | 
| NPACNFS | 
North Pacific Ocean Nowcast/Forecast System | 
In English | 
→ Meteorology, climatology → Marine research, oceanography | 
| NPIW | 
North Pacific Intermediate Water | 
In English | 
→ Marine research, oceanography | 
| NSIPP | 
NASA Seasonal-to-Interannual Prediction Project | 
In English | 
→ Meteorology, climatology → United States | 
| NWP | 
Numerical Weather Prediction | 
In English | 
→ Computer simulation → Meteorology, climatology | 
| NWS | 
National Weather Service | 
In English | 
→ Meteorology, climatology | 
| OCCAM | 
Ocean Circulation and Climate Advanced Modelling Project | 
In English | 
→ Marine research, oceanography → Meteorology, climatology | 
| OcDyn | 
Ocean Dynamics | 
In English | 
→ Serial publications, periodicals → Marine research, oceanography | 
| OCE | 
Ocean Color Experiment | 
In English | 
→ Marine research, oceanography | 
| OcEng | 
Ocean Engineering | 
In English | 
→ Serial publications, periodicals → Marine research, oceanography → 6295 | 
| OcMod | 
Ocean Modelling | 
In English | 
→ Serial publications, periodicals → Marine research, oceanography | 
| OcPhE | 
Ocean Physics and Engineering | 
In English | 
→ Serial publications, periodicals → Marine research, oceanography → 6295 | 
| OcSci | 
Ocean Science | 
In English | 
→ Serial publications, periodicals → Marine research, oceanography | 
| OCTS | 
Ocean Color and Temperature Scanner | 
In English | 
→ Marine research, oceanography → Meteorology, climatology | 
| ODP | 
Ocean Drilling Programm | 
In English | 
→ Marine research, oceanography | 
| OFES | 
OGCM for the Earth Simulator | 
In English | 
→ Marine research, oceanography → Computer simulation | 
| OGCM | 
Ocean General Circulation Model | 
In English | 
→ Marine research, oceanography | 
| OMI | 
Organisation Maritime Internationale 
= IMO (look above)
 | 
In French | 
→ International relations → Marine research, oceanography → 6295 → Agricultural sciences | 
| OMJ | 
Oscillation de Madden-Julian 
= MJO (look above)
 | 
In French | 
→ Meteorology, climatology | 
| OMM | 
Organisation Météorologique Mondiale (www.wmo.int) 
= MMO, WMO (look above)
 | 
In French | 
→ Organizations and associations → Meteorology, climatology → United Nations | 
| OMSZ | 
Országos Meteorológiai Szolgálat | 
In Hungarian | 
→ Meteorology, climatology | 
| OPA | 
Océan PArallélisé | 
In French | 
→ Marine research, oceanography | 
| ORI | 
Ocean Research Institute (www.ori.u-tokyo.ac.jp) | 
In English | 
→ Research institutes → Marine research, oceanography → Japan | 
| OSJaJ | 
Oceanographical Society of Japan Journal | 
In English | 
→ Serial publications, periodicals → Marine research, oceanography | 
| OzSE | 
Ozone: Science and Engineering | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| PAGES | 
Past Global Changes | 
In English | 
→ Threats to the environment → Meteorology, climatology | 
| PalOc | 
Paleoceanography | 
In English | 
→ Serial publications, periodicals → Palaeontology → Marine research, oceanography | 
| PDO | 
Pacific Decadal Oscillation | 
In English | 
→ Meteorology, climatology | 
| PECT | 
Plan Énergie Climat Territorial | 
In French | 
→ Regional administration → Energy economics → Meteorology, climatology → Environmental protection | 
| PMEL | 
Pacific Marine Environmental Laboratory (www.pmel.noaa.gov) | 
In English | 
→ Research institutes → Marine research, oceanography | 
| PMetR | 
Papers in Meteorological Research | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology | 
| PMG | 
Papers in Meteorology and Geophysics | 
In English | 
→ Serial publications, periodicals → Meteorology, climatology → Geophysics | 
| PMRC | 
Programme Mondial de Recherche sur le Climat | 
In French | 
→ Meteorology, climatology | 
| PNCA | 
Programme National de la Chimie Atmosphérique | 
In French | 
→ Chemistry → Meteorology, climatology | 
| PNEDC | 
Programme National d'Étude du Climat | 
In French | 
→ Meteorology, climatology | 
| PNEM | 
Programme National d'Écotoxicologie Marine | 
In French | 
→ Marine research, oceanography → Biological sciences | 
| PNLCC | 
Programme National de Lutte contre le Changement Climatique | 
In French | 
→ Central administration → Meteorology, climatology → Environmental protection | 
| PNOC | 
Programme National d'Océanographie Côtière | 
In French | 
→ Marine research, oceanography | 
| POCM | 
Parallel Ocean Climate Model | 
In English | 
→ Marine research, oceanography | 
| PODAAC | 
Physical Oceanography Distributed Active Archive Center (http://podaac.jpl.nasa.gov) | 
In English | 
→ Data → Marine research, oceanography |