MODIS/Aqua Level 1B Subsampled Calibrated Radiance 5Km

The MODIS/Aqua Level 1B Subsampled Calibrated Radiance 5Km (MYD02SSH) product is a subsample from the MODIS Level 1B 1-km data. Every fifth pixel is taken from the MYD021KM product and written out to MYD02SSH. The subsampling starts at the third frame, and at the third line. Here, "frame" and "line" are naming conventions for pixels along and across the scan, respectively. Since MYD02SSH is a subsampled Level 1B product, many things from the Level 1B documentation apply as well. The MYD02SSH data product contains calibrated and geolocated at-aperture radiances for 36 bands generated from MODIS Level 1A scans of raw radiance (MOD 01). The radiance units are in W/(m ^2 um sr). Additional data are provided including quality flags, error estimates and calibration data. Visible, shortwave infrared (SWIR), and Near Infrared (NIR) measurements are made during daytime only, while radiances for Thermal Infrared (TIR) are measured continuously.

As its parent, the MYD02SSH is in HDF-EOS format, and all metadata structures and names are preserved for better convenience. However, some relevant changes are made where appropriate (e.g., the dimension mappings are updated to reflect the new one-to-one correspondence between the data and geolocations). The latter is one of the most important differences: in the MYD02SSH, there is no offset between data and geolocation pixels. The spatial coverage is almost similar to that from MYD021KM (nominally it is 2330 by 2030 km, cross-track by along-track, respectively). The MYD02SSH is produced continuously, and thus the processing provides 2-day repeat observations of the Earth with a repeat orbit pattern every 16 days.

See the MODIS Science Team homepage for more data set information:

https://modis.gsfc.nasa.gov/data/dataprod/

Data and Resources

Field Value
accessLevel public
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citation MCST Team. 2017-05-01. MODIS/Aqua Level 1B Subsampled Calibrated Radiance 5Km. Version 6.1. MODAPS at NASA/GSFC. Archived by National Aeronautics and Space Administration, U.S. Government, L1 and Atmosphere Archive and Distribution System (LAADS). https://doi.org/10.5067/MODIS/MYD02SSH.061. https://doi.org/10.5067/MODIS/MYD02SSH.061.
creator MCST Team
identifier C1461276301-LAADS
issued 2017-05-05
landingPage https://doi.org/10.5067/MODIS/MYD02SSH.061
language {en-US}
metadata_type geospatial
modified 2019-12-27
programCode {026:001}
publisher Not provided
release-place MODAPS at NASA/GSFC
resource-type Dataset
source_datajson_identifier true
source_hash 1840cbfe6938e0d91f2807e7f9e95381b2876f84
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/2020-11-30T00:00:00Z
theme {Aqua,geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • earth-science
  • geo
  • geoss
  • infrared-wavelengths
  • national
  • national-geospatial-data-asset
  • ngda
  • north-america
  • spectral-engineering
  • united-states
  • visible-wavelengths
isopen False
license_id notspecified
license_title License not specified
maintainer ASAD ULLAH
maintainer_email MODAPSUSO@lists.nasa.gov
metadata_created 2025-11-22T23:54:54.617771
metadata_modified 2025-11-22T23:54:54.617776
notes The MODIS/Aqua Level 1B Subsampled Calibrated Radiance 5Km (MYD02SSH) product is a subsample from the MODIS Level 1B 1-km data. Every fifth pixel is taken from the MYD021KM product and written out to MYD02SSH. The subsampling starts at the third frame, and at the third line. Here, "frame" and "line" are naming conventions for pixels along and across the scan, respectively. Since MYD02SSH is a subsampled Level 1B product, many things from the Level 1B documentation apply as well. The MYD02SSH data product contains calibrated and geolocated at-aperture radiances for 36 bands generated from MODIS Level 1A scans of raw radiance (MOD 01). The radiance units are in W/(m ^2 um sr). Additional data are provided including quality flags, error estimates and calibration data. Visible, shortwave infrared (SWIR), and Near Infrared (NIR) measurements are made during daytime only, while radiances for Thermal Infrared (TIR) are measured continuously. As its parent, the MYD02SSH is in HDF-EOS format, and all metadata structures and names are preserved for better convenience. However, some relevant changes are made where appropriate (e.g., the dimension mappings are updated to reflect the new one-to-one correspondence between the data and geolocations). The latter is one of the most important differences: in the MYD02SSH, there is no offset between data and geolocation pixels. The spatial coverage is almost similar to that from MYD021KM (nominally it is 2330 by 2030 km, cross-track by along-track, respectively). The MYD02SSH is produced continuously, and thus the processing provides 2-day repeat observations of the Earth with a repeat orbit pattern every 16 days. See the MODIS Science Team homepage for more data set information: https://modis.gsfc.nasa.gov/data/dataprod/
num_resources 8
num_tags 14
title MODIS/Aqua Level 1B Subsampled Calibrated Radiance 5Km