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Description

M2SMNXSLV (or statM_2d_slv_Nx) is a 2-dimensional monthly mean data collection in Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2). This collection consists of monthly mean of daily statistics, such as daily mean (or daily minimum and maximum) air temperature at 2-meter, and maximum precipitation rate during the period. The collection also includes the variance of parameters.

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 2019.11.18: fixed title statD ==> statM. -suhung

Product Summary

Platforms
MERRA-2
Instruments
NOT APPLICABLE
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
C1276812828-GES_DISC
Data State
ACTIVE
Number of Files/Granules
555
Processing Level
4
Published
Updated
Science Keywords
Air Temperature ,
Precipitation Rate ,
24 Hour Maximum Temperature ,
24 Hour Minimum Temperature

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 statD_2d_slv_Nx: 2d,Monthly,Aggregated Statistics,Single-Level,Assimilation,Single-Level Diagnostics V5.12.4 [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/KVIMOMCUO83U Date Accessed: 2026-05-18

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
Drivers of Seasonal Land-Ice-Flow Variability in the Antarctic Peninsula Boxall, Karla, Christie, Frazer D. W., Willis, Ian C., Wuite, Jan, Nagler, Thomas, Scheiblauer, Stefan Air Temperature, Precipitation Rate, 24 Hour Maximum Temperature, 24 Hour Minimum Temperature
Spatio-Temporal Analysis of Fire Events Over the Past 10 Years in the Central-East Region of Argentina and Surrounding Areas Seijo, Maria Fernanda Valle, Otero, Lidia Ana, Piacentini, Ruben Dario Air Temperature, Precipitation Rate, 24 Hour Maximum Temperature, 24 Hour Minimum Temperature, Precipitation, Precipitation Amount, Snow, Rain
Micro insights on the pathways to agricultural transformation: Amare, Mulubrhan, Parvathi, Priyanka, Nguyen, Trung Thanh Air Temperature, Precipitation Rate, 24 Hour Maximum Temperature, 24 Hour Minimum Temperature
Continental patterns of bird migration linked to climate variability Dezfuli, Amin, Horton, Kyle G., Zuckerberg, Benjamin, Schubert, Siegfried D., Bosilovich, Michael G. Air Temperature, Precipitation Rate, 24 Hour Maximum Temperature, 24 Hour Minimum Temperature, 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, Relative Humidity, Specific Humidity, Atmospheric Water Vapor, Cloud Liquid Water/Ice, Altitude, Geopotential Height, Ozone Profiles
Compound effects of climate change on future transboundary water issues in the Middle East Dezfuli, Amin, Razavi, Saman, Zaitchik, Benjamin F. Air Temperature, Precipitation Rate, 24 Hour Maximum Temperature, 24 Hour Minimum Temperature
Predicting European cities' climate mitigation performance using machine learning Hsu, Angel, Wang, Xuewei, Tan, Jonas, Toh, Wayne, Goyal, Nihit Aerosols, Aerosol Extinction, Aerosol Optical Depth/Thickness, Angstrom Exponent, Aerosol Particle Properties, Carbonaceous Aerosols, Dust/Ash/Smoke, Organic Particles, Sulfate Particles, Sulfur Oxides, Sulfur Compounds, Sulfate, Sulfur Dioxide, Sulfur Oxides, Particulate Matter, Dimethyl Sulfide, Black Carbon, Sea Salt, PARTICULATE MATTER (PM 2.5), PARTICULATE MATTER (PM 10), PARTICULATE MATTER (PM 1.0), Air Temperature, Precipitation Rate, 24 Hour Maximum Temperature, 24 Hour Minimum Temperature, Boundaries, Population Estimates
Patmos-x version 6.0: 40 years of merged avhrr and hirs global cloud data Foster, Michael J., Phillips, Coda, Heidinger, Andrew K., Borbas, Eva E., Li, Yue, Menzel, W. Paul, Walther, Andi, Weisz, Elisabeth Air Temperature, Precipitation Rate, 24 Hour Maximum Temperature, 24 Hour Minimum Temperature, Aerosol Backscatter, Aerosol Extinction, Aerosol Optical Depth/Thickness, Angstrom Exponent, Aerosol Particle Properties, Aerosol Radiance, Carbonaceous Aerosols, Cloud Condensation Nuclei, Dust/Ash/Smoke, Nitrate Particles, Organic Particles, Particulate Matter, Sulfate Particles, Trace Gases/Trace Species, Atmospheric Emitted Radiation, Emissivity, Optical Depth/Thickness, Radiative Flux, Reflectance, Transmittance, Atmospheric Stability, Humidity, Total Precipitable Water, Water Vapor Profiles, Cloud Condensation Nuclei, Cloud Droplet Concentration/Size, Cloud Liquid Water/Ice, Cloud Optical Depth/Thickness, Cloud Asymmetry, Cloud Ceiling, Cloud Frequency, Cloud Height, Cloud Top Pressure, Cloud Top Temperature, Cloud Vertical Distribution, Cloud Emissivity, Cloud Radiative Forcing, Cloud Reflectance, Rain Storms, Atmospheric Ozone, Clouds, Cloud Properties, Cloud Fraction, Cloud Top Height, Infrared Radiance, REFLECTED INFRARED, Visible Radiance
Reduced global warming from CMIP6 projections when weighting models by Brunner, Lukas, Pendergrass, Angeline G., Lehner, Flavio, Merrifield, Anna L., Lorenz, Ruth, Knutti, Reto Air Temperature, Precipitation Rate, 24 Hour Maximum Temperature, 24 Hour Minimum Temperature
Biological soil crusts along a climatic gradient in Chile: Richness and imprints of phototrophic microorganisms in phosphorus biogeochemical cycling Baumann, Karen, Jung, Patrick, Samolov, Elena, Lehnert, Lukas W., Budel, Burkhard, Karsten, Ulf, Bendix, Jorg, Achilles, Sebastian, Schermer, Michael, Matus, Francisco, Oses, Romulo, Osses, Pablo, Morshedizad, Mohsen, Oehlschlager, Claudia, Hu, Yongfeng, Klysubun, Wantana, Leinweber, Peter Air Temperature, Precipitation Rate, 24 Hour Maximum Temperature, 24 Hour Minimum Temperature, Clouds, Cloud Frequency, Cloud Height
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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
HOURNORAIN HOURNORAIN s float32 999999986991104 N/A N/A N/A
lat lat degrees_north float64 N/A N/A N/A N/A
lon lon degrees_east float64 N/A N/A N/A N/A
T2MMAX T2MMAX K float32 999999986991104 N/A N/A N/A
T2MMEAN T2MMEAN K float32 999999986991104 N/A N/A N/A
T2MMIN T2MMIN K float32 999999986991104 N/A N/A N/A
time time minutes since 2025-11-01 00:30:00 int32 N/A N/A N/A N/A
TPRECMAX TPRECMAX kg m-2 s-1 float32 999999986991104 N/A N/A N/A
Var_HOURNORAIN Var_HOURNORAIN s s float32 999999986991104 N/A N/A N/A
Var_T2MMAX Var_T2MMAX K K float32 999999986991104 N/A N/A N/A
Var_T2MMEAN Var_T2MMEAN K K float32 999999986991104 N/A N/A N/A
Var_T2MMIN Var_T2MMIN K K float32 999999986991104 N/A N/A N/A
Var_TPRECMAX Var_TPRECMAX kg m-2 s-1 kg m-2 s-1 float32 999999986991104 N/A N/A N/A
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