MODIS/Aqua Clear Radiance Statistics Indexed to Global Grid 5-Min L2 Swath 10km

The MODIS/Aqua Clear Radiance Statistics Indexed to Global Grid 5-Min L2 Swath 10km (MYDCSR_G)product provides a variety of, statistical measures that characterize observed top-of-atmosphere clear sky radiances at a 10 km spatial resolution. Clear radiances are collected for all earth scenes and separated by day and night.

The MYDCSR_G serves as input to the downstream Level 3 aggregation processes that culminate with the production of the 1-degree Zonal Bias Product (MYDCSR_B) used as input to PGE06 (MODIS Cloud Product).

MYDCSR_G data are collected for bands 1-7 and 17-36 for all but the last two statistics. Calculated clear-sky radiances are produced for bands 20, 22-25, and 27-36 and subtracted from observed values. Differences in bands 31 and 33-36 are summed and used to create the clear-sky biases used in generating the PGE06 cloud top pressure field. Numbers of observations from land vs. water are also kept for each 25-km region. Biases are used to quantify the difference between instrument observed radiances and a calculated radiance. This difference is especially important for the cloud top properties retrieval which utilizes an atmospheric transmittance model as a means of calculating radiances in different layers of the atmosphere and matching that to observations.

The biases contained in MYDCSR_G are the difference between the calculated radiance and the observed radiance for all clear-sky grid cells which fall within the given granule. The MYDCSR_G files are in Hierarchical Data Format (HDF).

Data and Resources

Field Value
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier C1444209284-LAADS
issued 2017-10-01
landingPage https://doi.org/10.5067/MODIS/MYDCSR_G.061
metadata_type geospatial
modified 2019-12-12
programCode {026:001}
publisher Not provided
resource-type Dataset
source_datajson_identifier true
source_hash 5aadbcf9436252318d6c82e5e8c750fac51fe0f0
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
temporal 2002-07-04T00:00:00Z/2019-12-12T00:00:00Z
theme {Aqua,geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • atmosphere
  • atmospheric-radiation
  • ckan
  • earth-science
  • geo
  • geoss
  • infrared-wavelengths
  • national
  • national-geospatial-data-asset
  • ngda
  • north-america
  • spectral-engineering
  • ultraviolet-wavelengths
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer ASAD ULLAH
maintainer_email MODAPSUSO@lists.nasa.gov
metadata_created 2025-11-22T21:19:28.984763
metadata_modified 2025-11-22T21:19:28.984767
notes The MODIS/Aqua Clear Radiance Statistics Indexed to Global Grid 5-Min L2 Swath 10km (MYDCSR_G)product provides a variety of, statistical measures that characterize observed top-of-atmosphere clear sky radiances at a 10 km spatial resolution. Clear radiances are collected for all earth scenes and separated by day and night. The MYDCSR_G serves as input to the downstream Level 3 aggregation processes that culminate with the production of the 1-degree Zonal Bias Product (MYDCSR_B) used as input to PGE06 (MODIS Cloud Product). MYDCSR_G data are collected for bands 1-7 and 17-36 for all but the last two statistics. Calculated clear-sky radiances are produced for bands 20, 22-25, and 27-36 and subtracted from observed values. Differences in bands 31 and 33-36 are summed and used to create the clear-sky biases used in generating the PGE06 cloud top pressure field. Numbers of observations from land vs. water are also kept for each 25-km region. Biases are used to quantify the difference between instrument observed radiances and a calculated radiance. This difference is especially important for the cloud top properties retrieval which utilizes an atmospheric transmittance model as a means of calculating radiances in different layers of the atmosphere and matching that to observations. The biases contained in MYDCSR_G are the difference between the calculated radiance and the observed radiance for all clear-sky grid cells which fall within the given granule. The MYDCSR_G files are in Hierarchical Data Format (HDF).
num_resources 5
num_tags 16
title MODIS/Aqua Clear Radiance Statistics Indexed to Global Grid 5-Min L2 Swath 10km