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Description

M2I3NPASM (or inst3_3d_asm_Np) is an instantaneous 3-dimensional 3-hourly data collection in Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2). This collection consists of assimilations of meteorological parameters at 42 pressure levels, such as temperature, wind components, vertical pressure velocity, water vapor, ozone mass mixing ratio, and layer height. The data field is available every three hours starting from 00:00 UTC, e.g.: 00:00, 03:00, … , 21:00 UTC. The information on the pressure levels can be found in the section 4.2 of the MERRA-2 File Specification document.

MERRA-2 is the latest version of global atmospheric reanalysis for the satellite era produced by NASA Global Modeling and Assimilation Office (GMAO) using the Goddard Earth Observing System Model (GEOS) version 5.12.4. The dataset covers the period of 1980-present with the latency of ~3 weeks after the end of a month.

Data Reprocessing: Please check “Records of MERRA-2 Data Reprocessing and Service Changes” linked from the “Documentation” tab on this page. Note that a reprocessed data filename is different from the original file.

MERRA-2 Mailing List: Sign up to receive information on reprocessing of data, changing of tools and services, as well as data announcements from GMAO. Contact the GES DISC Help Desk (gsfc-dl-help-disc@mail.nasa.gov) to be added to the list.

Questions: If you have a question, please read "MERRA-2 File Specification Document", “MERRA-2 Data Access – Quick Start Guide”, and FAQs linked from the ”Documentation” tab on this page. If that does not answer your question, you may post your question to the NASA Earthdata Forum (forum.earthdata.nasa.gov) or email the GES DISC Help Desk (gsfc-dl-help-disc@mail.nasa.gov).

Version Description

The GEOS-5 model version used for processing MERRA-2

Product Summary

Platforms
MERRA-2
Instruments
NOT APPLICABLE
Projects
MERRA-2
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Spatial Resolution
0.625 Decimal Degrees x 0.5 Decimal Degrees
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1980-01-01 to Present
Data Partner
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/GESDI
Concept ID
C1276812879-GES_DISC
Data State
ACTIVE
Number of Files/Granules
16923
Processing Level
4
Published
Updated
Science Keywords
Atmospheric Ozone ,
Sea Level Pressure ,
Surface Pressure ,
U/V Wind Components ,
U/V Wind Components ,
Potential Vorticity ,
Vertical Wind Velocity/Speed ,
Vertical Profiles ,
Upper Air Temperature ,
Air Temperature ,
Relative Humidity ,
Specific Humidity ,
Atmospheric Water Vapor ,
Cloud Liquid Water/Ice ,
Altitude ,
Geopotential Height ,
Ozone Profiles

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Global Modeling and Assimilation Office, & Pawson, S. (2015). MERRA-2 inst3_3d_asm_Np: 3d,3-Hourly,Instantaneous,Pressure-Level,Assimilation,Assimilated Meteorological Fields V5.12.4 [Dataset]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/QBZ6MG944HW0 Date Accessed: 2026-06-06

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
A Forward Modeling Approach for the Vicarious Validation of the Thermal Infrared Sensor On-Board Landsat 8 and 9 Eon, Rehman S., Gerace, Aaron, Montanaro, Matthew Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Analysis of CCCma Radiative Transfer Calculations for Single-Layer Brendecke, Jordann, Dong, Xiquan, Xi, Baike, Zhong, Xiang, Barker, Howard W., Li, Jiangnan, Pilewskie, Peter Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Assessing environmental impacts and ecosystem services of Hops crop in Galicia, NW Spain: critical contributors for sustainable cultivation strategies Agraso-Otero, Adrian, Cancela, Javier J., Fandino, Maria, Rebolledo-Leiva, Ricardo, Gonzalez-Garcia, Sara Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Enhancing extreme temperature projections using a hybrid MGWR-Copula Gyamfi, Kwame Adutwum, Chung, Eun-Sung Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Coupling Between Sudden Stratospheric Warming and Mid-Latitude Ramatheerthan, S. K., Kozubek, M., Lastovicka, J., Mosna, Z., Koucka Knizova, P., Urbar, J. Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
How Convective Mass Flux Responds to Environmental Humidity Seidel, Seth D., Arnold, Nathan P., Wolding, Brandon Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Evapotranspiration declines prolonged by deforestation and fire in South American biomes Ahmad, Shahryar K., Holmes, Thomas R., Kumar, Sujay V., Lahmers, Timothy M., Konapala, Goutam, Getirana, Augusto, Nie, Wanshu, Liu, Pang-Wei, Hain, Christopher R., Locke, Kim A., Libonati, Renata Precipitation, Precipitation Amount, Precipitation Rate, Snow, Rain, Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles, Land Use/Land Cover Classification, Leaf Characteristics, Photosynthetically Active Radiation, Leaf Area Index (LAI), Fraction Of Absorbed Photosynthetically Active Radiation (fapar), Fire Ecology, Biomass Burning, Wildfires, Fire Occurrence, Burned Area
Physics-Informed Deep Learning for Adaptive Atmospheric Compensation in Terahertz Satellite Communication Networks Konduri, Bhagavan, Chanthirasekaran, K., Chaturvedi, Abhay, Muthevi, Anil Kumar, Mubeen, Suraya, Muniyandy, Elangovan Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Monitoring the upper atmospheric temperature and interplanetary magnetic field with the GRAPES-3 muon telescope Paul, S., Arunbabu, K.P., Chakraborty, M., Gupta, S.K., Hariharan, B., Hayashi, Y., Jagadeesan, P., Jain, A., Karthik, M., Kojima, H., Kawakami, S., Mohanty, P.K., Muraki, Y., Nayak, P.K., Nonaka, T., Oshima, A., Rameez, M., Ramesh, K., Shibata, S., Tanaka, K. Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Semidiurnal tide modulation by ozone and nonlinear interaction with planetary wave during the 2024 Southern Hemisphere sudden stratospheric warmings Lee, Wonseok, Liu, Guiping, Sassi, Fabrizio, Janches, Diego, Kim, JeongHan, Jee, Geonhwa, Murphy, D. J., MoffatGriffin, Tracy Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles, Atmospheric Radiation, Temperature Tendency, Cloud Fraction
Study on a Typhoon-Induced Gravity Wave Captured by High-Altitude Radiosonde Observations in Okinawa in July 2024 Kinoshita, Takenari, Ogino, Shin-Ya, Suzuki, Junko, Shirooka, Ryuichi, Moteki, Qoosaku, Zhao, Ning, Yokoi, Satoru Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
The ``Predictability Barrier'' Phenomenon of Winter Extreme Cold Han, Zhe, Duan, Wansuo, Dai, Guokun, Li, Shuanglin, Chen, Boyu, Hou, Yuxuan Surface Temperature, Skin Temperature, Upper Air Temperature, Air Temperature, Atmospheric Winds, Surface Winds, U/V Wind Components, Atmospheric Pressure, Sea Level Pressure, Surface Pressure, Specific Humidity, Total Precipitable Water, Cloud Liquid Water/Ice, Atmospheric Water Vapor, Atmospheric Ozone, Oxygen Compounds, Altitude, Boundary Layer Winds, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Relative Humidity, Geopotential Height, Ozone Profiles
Substantially lower estimates in China's offshore wind potential using farm-scale spatial modeling and wake effects Xu, Shiwei, Yin, Gege, Hu, Peiyu, Dong, Di, Qin, Yue, Liu, Yu, Liu, Gang, Song, Lili, Zhang, Chuan Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Water Isotope Model Intercomparison Project (WisoMIP): Present-Day Bong, Hayoung, LeGrande, Allegra N., Dee, Sylvia, Zhu, Jiang, Cauquoin, Alexandre, Fiorella, Richard P., Ding, Qinghua, Dutrievoz, Niels, Tanoue, Masahiro, Frazer, Michelle, Sarkar, Mampi, Agosta, Cecile, Yoshimura, Kei, Werner, Martin, Okazaki, Atsushi, Risi, Camille, SteenLarsen, Hans Christian, Casado, Mathieu, Wahl, Sonja, Nusbaumer, Jesse, Worden, John, Good, Stephen, Bailey, Adriana, Schneider, Matthias, Noel, Stefan, Mandal, Soumyajit, Bowman, Kevin, Li, Yifan, Schmidt, Gavin A. Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles, Hydrogen-deuterium Oxide
Understanding the Evolution of Global Atmospheric Rivers With a Vapor Zhang, Aidi, Yang, Da, Ong, Hing, Tan, Zhihong Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles, Pressure Thickness, Cloud Fraction, Wind Dynamics, Wind Direction Tendency, Wind Speed Tendency, Wind Direction Tendency, Wind Speed Tendency, Water Vapor Tendency, Water Vapor Processes
Detection of fast-changing intra-seasonal vegetation dynamics of drylands using solar-induced chlorophyll fluorescence (SIF) Wen, Jiaming, Tagliabue, Giulia, Rossini, Micol, Fava, Francesco Pietro, Panigada, Cinzia, Merbold, Lutz, Leitner, Sonja, Sun, Ying Longwave Radiation, Shortwave Radiation, Heat Flux, Liquid Precipitation, Snow/Ice, Geopotential Height, Altitude, Surface Temperature, Skin Temperature, Upper Air Temperature, Dew Point Temperature, Air Temperature, Cloud Top Temperature, Atmospheric Winds, Surface Winds, U/V Wind Components, Upper Level Winds, U/V Wind Components, Vertical Wind Velocity/Speed, Atmospheric Pressure, Sea Level Pressure, Cloud Top Pressure, Sea Level Pressure, Surface Pressure, Specific Humidity, Total Precipitable Water, Cloud Liquid Water/Ice, Atmospheric Water Vapor, Atmospheric Ozone, Oxygen Compounds, Boundary Layer Winds, Total Ozone, Reflectance, Anisotropy, Land Use/Land Cover Classification, Solar Induced Fluorescence, Chlorophyll, Primary Production, Leaf Characteristics, Potential Vorticity, Vertical Profiles, Relative Humidity, Ozone Profiles
Drought Weather in the Northeast United States Agel, Laurie, Barlow, Mathew, Skinner, Christopher B., Karmalkar, Ambarish V. Longwave Radiation, Shortwave Radiation, Soil Heat Budget, Soil Heat Budget, Soil Temperature, Soil Temperature, Soil Infiltration, Soil Infiltration, Soil Moisture/Water Content, Surface Soil Moisture, Root Zone Soil Moisture, Soil Moisture/Water Content, Evaporation, Surface Water, Runoff Rate, Average Flow, Average Flow, Precipitation, Snow/Ice, Snow Depth, Snow Melt, Snow/Ice Temperature, Leaf Area Index (LAI), Leaf Area Index (LAI), Geopotential Height, Altitude, Surface Temperature, Skin Temperature, Upper Air Temperature, Dew Point Temperature, Air Temperature, Cloud Top Temperature, Atmospheric Winds, Surface Winds, U/V Wind Components, Upper Level Winds, U/V Wind Components, Vertical Wind Velocity/Speed, Atmospheric Pressure, Sea Level Pressure, Cloud Top Pressure, Sea Level Pressure, Surface Pressure, Specific Humidity, Total Precipitable Water, Cloud Liquid Water/Ice, Atmospheric Water Vapor, Atmospheric Ozone, Oxygen Compounds, Boundary Layer Winds, Total Ozone, Potential Vorticity, Vertical Profiles, Relative Humidity, Ozone Profiles, Heat Flux, Heat Flux, Heat Flux, Heat Flux, Longwave Radiation, Shortwave Radiation, Water Vapor Tendency, Water Vapor Flux, Cloud Dynamics, Cloud Microphysics
Remote Forcing and Prediction of the June 2023 Texas Heat Wave Lim, Young-Kwon, DeAngelis, Anthony M., Thomas, Natalie P., Schubert, Siegfried D., Chang, Yehui, Collow, Allison B., Dezfuli, Amin Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles, Surface Temperature, Skin Temperature, Dew Point Temperature, Cloud Top Temperature, Atmospheric Winds, Surface Winds, Upper Level Winds, Atmospheric Pressure, Cloud Top Pressure, Sea Level Pressure, Total Precipitable Water, Oxygen Compounds, Boundary Layer Winds, Total Ozone, Temperature Tendency
Revisiting the Causes and Global and Historical Context of the US Midwest Great Flood of 1993 Schubert, Siegfried D., Chang, Yehui, DeAngelis, Anthony M., Lim, Young-Kwon, Koster, Randal D., Bosilovich, Michael G., Molod, Andrea M., Dezfuli, Amin Upper Air Temperature, Air Temperature, Temperature Tendency, Geopotential Height, Altitude, Surface Temperature, Skin Temperature, Dew Point Temperature, Cloud Top Temperature, Atmospheric Winds, Surface Winds, U/V Wind Components, Upper Level Winds, U/V Wind Components, Vertical Wind Velocity/Speed, Atmospheric Pressure, Sea Level Pressure, Cloud Top Pressure, Sea Level Pressure, Surface Pressure, Specific Humidity, Total Precipitable Water, Cloud Liquid Water/Ice, Atmospheric Water Vapor, Atmospheric Ozone, Oxygen Compounds, Boundary Layer Winds, Total Ozone, Potential Vorticity, Vertical Profiles, Relative Humidity, Ozone Profiles, Heat Flux, Water Vapor, Precipitation Rate, Snow/Ice, Evaporation, Latent Heat Flux, Latent Heat Flux, Sensible Heat Flux, Diffusion, Surface Winds, Wind Speed, Wind Stress, Wind Stress, Surface Roughness, Planetary Boundary Layer Height, Ice Fraction
Tropical Cyclone-Radiation Interaction in NASA Reanalysis and Model Products as Compared to CloudSat Observations Lee, Tsung-Yung, Wing, Allison A. Atmospheric Radiation, Longwave Radiation, Shortwave Radiation, Radiative Flux, Radiative Forcing, Surface Radiative Properties, Albedo, Emissivity, Cloud Properties, Cloud Fraction, Cloud Optical Depth/Thickness, Skin Temperature, Skin Temperature, Sea Surface Skin Temperature, Geopotential Height, Atmospheric Ozone, Sea Level Pressure, Surface Pressure, Upper Air Temperature, Vertical Profiles, Air Temperature, Specific Humidity, U/V Wind Components, U/V Wind Components, Ozone Profiles, Temperature Tendency, Potential Vorticity, Vertical Wind Velocity/Speed, Relative Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Surface Temperature, Atmospheric Winds, Surface Winds, Atmospheric Pressure, Total Precipitable Water, Oxygen Compounds, Boundary Layer Winds
A comparative analysis of GNSS-inferred precipitable water vapour at the potential sites for the Africa Millimetre Telescope Frans, Lott, Backes, Michael, Falcke, Heino, Venturi, Tiziana Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
An Unusual Winter Ozone Event in Colorado Langford, Andrew O., Aikin, Kenneth C., Alvarez, Raul J., Baidar, Sunil, Brewer, W. Alan, Brown, Steven S., Coggon, Matthew M., Cullis, Patrick D., Gilman, Jessica B., Gkatzelis, Georgios I., Helmig, Detlev, Johnson, Bryan J., Knowland, K. Emma, Kumar, Rajesh, Lamplugh, Aaron D., McCarty, Brandi J., Middlebrook, Ann M., Pfister, Gabriele, Peischl, Jeff, Petropavlovskikh, Irina, Rickly, Pamela S., Robinson, Michael A., Rollins, Andrew W., Sandberg, Scott P., Senff, Christoph J., Warneke, Carsten Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Analysis of CCCma Radiative Transfer Calculations for Low-Level Overcast Liquid Clouds Over ARM SGP and ENA Sites Brendecke, Jordann, Dong, Xiquan, Xi, Baike, Zhong, Xiang, Barker, Howard W., Li, Jiangnan, Pilewskie, Peter Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Bimodal evolution of vertical motion in tropical precipitation extremes Li, YiXian, Singh, Martin S., Masunaga, Hirohiko, Yu, JiaYuh Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Characterizing the Full Climate Impact of Individual Real-World Flights Using a Linear Temperature Response Model Awde, Mohamed, Stuart, Charles Atmospheric Ozone, Sea Level Pressure, Surface Pressure, U/V Wind Components, U/V Wind Components, Potential Vorticity, Vertical Wind Velocity/Speed, Vertical Profiles, Upper Air Temperature, Air Temperature, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
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Variables

The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.

For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor Offset
EPV ertels_potential_vorticity from M2I3NPASM_5.12.4 K m+2 kg-1 s-1 N/A N/A N/A N/A N/A
H edge_heights from M2I3NPASM_5.12.4 m N/A N/A N/A N/A N/A
lat latitude from M2I3NPASM_5.12.4 degrees_north N/A N/A N/A N/A N/A
lev vertical level from M2I3NPASM_5.12.4 hPa N/A N/A N/A N/A N/A
lon longitude from M2I3NPASM_5.12.4 degrees_east N/A N/A N/A N/A N/A
O3 ozone_mass_mixing_ratio from M2I3NPASM_5.12.4 kg kg-1 N/A N/A N/A N/A N/A
OMEGA vertical_pressure_velocity from M2I3NPASM_5.12.4 Pa s-1 N/A N/A N/A N/A N/A
PHIS surface geopotential height from M2I3NPASM_5.12.4 m+2 s-2 N/A N/A N/A N/A N/A
PS surface_pressure from M2I3NPASM_5.12.4 Pa N/A N/A N/A N/A N/A
QI mass_fraction_of_cloud_ice_water from M2I3NPASM_5.12.4 kg kg-1 N/A N/A N/A N/A N/A
QL mass_fraction_of_cloud_liquid_water from M2I3NPASM_5.12.4 kg kg-1 N/A N/A N/A N/A N/A
QV specific_humidity from M2I3NPASM_5.12.4 kg kg-1 N/A N/A N/A N/A N/A
RH relative_humidity_after_moist from M2I3NPASM_5.12.4 1 N/A N/A N/A N/A N/A
SLP sea_level_pressure from M2I3NPASM_5.12.4 Pa N/A N/A N/A N/A N/A
T air_temperature from M2I3NPASM_5.12.4 K N/A N/A N/A N/A N/A
time time from M2I3NPASM_5.12.4 minutes since 2021-01-10 00:00:00 N/A N/A N/A N/A N/A
U eastward_wind from M2I3NPASM_5.12.4 m s-1 N/A N/A N/A N/A N/A
V northward_wind from M2I3NPASM_5.12.4 m s-1 N/A N/A N/A N/A N/A
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