MERRA-2 instM_3d_asm_Np: 3d,Monthly mean,Instantaneous,Pressure-Level,Assimilation,Assimilated Meteorological Fields 0.625 x 0.5 degree V5.12.4 (M2IMNPASM) at GES DISC

Description

M2IMNPASM (or instM_3d_asm_Np) is an instantaneous 3-dimensional monthly mean 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 information on the pressure levels can be found in the section 4.2 of the MERRA-2 File Specification document. The collection also includes certain quadratic information (such as the variance and covariance of certain 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 email the question on data access to the GES DISC Help Desk (gsfc-dl-help-disc@mail.nasa.gov), or the question on science to the MERRA-2 science team (merra-questions@lists.nasa.gov).

Resources

Name Format Description Link
33 MERRA-2 File Specification Document https://gmao.gsfc.nasa.gov/pubs/docs/Bosilovich785.pdf
33 README Document https://goldsmr5.gesdisc.eosdis.nasa.gov/data/MERRA2_MONTHLY/M2IMNPASM.5.12.4/doc/MERRA2.README.pdf
21 MERRA-2 Data Access – Quick Start Guide https://disc.gsfc.nasa.gov/information/documents?title=MERRA-2+Data+Access+%E2%80%93+Quick+Guide
21 FAQs about MERRA-2 data access https://disc.gsfc.nasa.gov/information/faqs?keywords=MERRA-2&page=1
21 How to read and plot the data. https://disc.gsfc.nasa.gov/information/howto?tags=MERRA
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2F2E096JV59PK7
34 M2IMNPASM variable https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/M2IMNPASM_5.12.4.png
21 Access the data via HTTPS. https://goldsmr5.gesdisc.eosdis.nasa.gov/data/MERRA2_MONTHLY/M2IMNPASM.5.12.4/
21 Access the data via the OPeNDAP protocol. https://goldsmr5.gesdisc.eosdis.nasa.gov/opendap/MERRA2_MONTHLY/M2IMNPASM.5.12.4/contents.html
21 The GMAO MERRA-2 documentation and FAQs https://gmao.gsfc.nasa.gov/reanalysis/MERRA-2/docs/
21 Time aggregated THREDDS Data Server (TDS) https://goldsmr5.gesdisc.eosdis.nasa.gov/thredds/catalog/MERRA2_MONTHLY_aggregation/catalog.html?dataset=merra2_monthly_aggregation%2FM2IMNPASM.5.12.4_Aggregation.ncml
21 The GES-DISC Interactive Online Visualization ANd aNalysis Interface (Giovanni) is a web-based tool that allows users to interactively visualize and analyze data. https://giovanni.gsfc.nasa.gov/giovanni/#dataKeyword=M2IMNPASM
21 Access the dataset landing page from the GES DISC website. https://disc.gsfc.nasa.gov/datacollection/M2IMNPASM_5.12.4.html
21 The GrADS Data Server (GDS) is another form of OPeNDAP that provides subsetting and some analysis services across the Internet. https://goldsmr5.gesdisc.eosdis.nasa.gov/dods/M2IMNPASM.info
21 Use the Earthdata Search to find and retrieve data sets across multiple data centers. https://search.earthdata.nasa.gov/search?q=M2IMNPASM
21 Records of MERRA-2 Data Reprocessing and Service Changes https://disc.gsfc.nasa.gov/information/documents?title=Records+of+MERRA-2+Data+Reprocessing+and+Service+Changes

Tags

  • altitude
  • atmospheric-water-vapor
  • atmosphere
  • atmospheric-temperature
  • atmospheric-chemistry
  • atmospheric-pressure
  • clouds
  • atmospheric-winds
  • earth-science

Topics

Categories