MERRA2_CNN_HAQAST bias corrected global hourly surface total PM2.5 mass concentration, V1 (MERRA2_CNN_HAQAST_PM25) at GES DISC

Description

This product provides MERRA-2 bias-corrected global hourly surface total PM2.5 mass concentration with the same horizontal spatial resolution as MERRA-2, covering a temporal range from 2000 to 2024. It is derived using a machine learning (ML) approach with a convolutional neural network (CNN) method and is specifically developed for the NASA Health and Air Quality Applied Sciences Team (HAQAST). The dataset consists of two parameters: MERRA2_CNN_Surface_PM25 and QFLAG. MERRA2_CNN_Surface_PM25, a 3-dimensional variable (time, latitude, longitude), represents the surface PM2.5 concentrations in µg/m³. QFLAG denotes the quality of data at each grid point, where 4 indicates the highest quality and 1 indicates the lowest quality. It is recommended to use QFLAG values of 3 and 4 for quantitative analysis.

Resources

Name Format Description Link
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FOCKK5HCFW5N3
21 Access the data via HTTPS. https://acdisc.gesdisc.eosdis.nasa.gov/data/HAQAST/MERRA2_CNN_HAQAST_PM25.1
21 Documentation with step-by-step instructions on accessing and reading data at GES DISC https://disc.gsfc.nasa.gov/information/howto
33 README Document https://acdisc.gesdisc.eosdis.nasa.gov/data/HAQAST/MERRA2_CNN_HAQAST_PM25.1/doc/README_MERRA2_CNN_HAQAST_PM25_V1.pdf
21 Access the dataset landing page from the GES DISC website. https://disc.gsfc.nasa.gov/datacollection/MERRA2_CNN_HAQAST_PM25_1.html
21 Use the Earthdata Search to find and retrieve data sets across multiple data centers. https://search.earthdata.nasa.gov/search?q=MERRA2_CNN_HAQAST_PM25
21 The science project page https://github.com/Alqamah-Sayeed/MERRA2-ML-PM2.5/
21 Access the data via the OPeNDAP protocol. https://acdisc.gesdisc.eosdis.nasa.gov/opendap/HAQAST/MERRA2_CNN_HAQAST_PM25.1/contents.html
34 The MERRA-2 bias corrected surface total PM2.5 mass concentration for 00:30Z Jan 1, 2023. https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/MERRA2_CNN_HAQAST_PM25_1.png

Tags

  • human-dimensions
  • aerosols
  • atmosphere
  • air-quality
  • public-health
  • earth-science

Topics

Categories