SWOT Level 2 Radiometer Brightness Temperatures and Troposphere Interim Data Product Version 1.0

The SWOT Level 2 Radiometer Brightness Temperatures and Troposphere Interim Geophysical Data Record (IGDR) Version 1.0 dataset produced by the Surface Water and Ocean Topography (SWOT) mission provides atmospheric water vapor and liquid water content from the Advanced Microwave Radiometer (AMR), a Jason-class radiometer that measures sea surface brightness temperatures at three microwave frequencies (18.7, 23.8 and 34 GHz). Brightness temperatures are processed to estimate the wet troposphere content, atmospheric attenuation to backscatter, cloud liquid water, water vapor content, and wind speed coincident with each range measurement from the nadir altimeter and applied to correct for altimeter range delays caused by atmospheric effects. SWOT is a joint mission between NASA and CNES that launched on December 16, 2022. It aims to measure ocean surface topography with unprecedented resolution and accuracy, as well as map inland water bodies globally. The interim radiometer dataset consists of discrete measurements along two tracks located approximately 30-km to the left and right of the satellite nadir. The data were processed using the Medium-accuracy (preliminary) Orbit Ephemeris (MOE) with preliminary calibrations applied. They are distributed as one file per half-orbit in netCDF4 file format with a nominal latency of < 1.5 days.

Data e Risorse

Campo Valore
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
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 C2296989388-POCLOUD
issued 2022-06-28
landingPage https://doi.org/10.5067/SWOT-RAD-IGDR-1.0
language {en-US}
metadata_type geospatial
modified 2025-03-31
old-spatial -180.0 -77.6 180.0 77.6
programCode {026:001}
publisher NASA/JPL/PODAAC
resource-type Dataset
source_datajson_identifier true
source_hash 0a2749e67b823daabb202df5dc1071e475374a65ecd45775e94f4d46404bfb4c
source_schema_version 1.1
temporal 2022-12-16T00:00:00Z/2023-07-03T00:00:00Z
theme {SWOT,geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • atmosphere
  • atmospheric-water-vapor
  • atmospheric-winds
  • clouds
  • cryosphere
  • earth-science
  • geological-features
  • microwave
  • oceans
  • radar
  • sea-ice
  • spectral-engineering
isopen False
license_id notspecified
license_title License not specified
maintainer undefined
maintainer_email cmr-support@earthdata.nasa.gov
metadata_created 2025-09-24T05:40:46.986155
metadata_modified 2025-09-24T05:40:46.986165
notes The SWOT Level 2 Radiometer Brightness Temperatures and Troposphere Interim Geophysical Data Record (IGDR) Version 1.0 dataset produced by the Surface Water and Ocean Topography (SWOT) mission provides atmospheric water vapor and liquid water content from the Advanced Microwave Radiometer (AMR), a Jason-class radiometer that measures sea surface brightness temperatures at three microwave frequencies (18.7, 23.8 and 34 GHz). Brightness temperatures are processed to estimate the wet troposphere content, atmospheric attenuation to backscatter, cloud liquid water, water vapor content, and wind speed coincident with each range measurement from the nadir altimeter and applied to correct for altimeter range delays caused by atmospheric effects. SWOT is a joint mission between NASA and CNES that launched on December 16, 2022. It aims to measure ocean surface topography with unprecedented resolution and accuracy, as well as map inland water bodies globally. The interim radiometer dataset consists of discrete measurements along two tracks located approximately 30-km to the left and right of the satellite nadir. The data were processed using the Medium-accuracy (preliminary) Orbit Ephemeris (MOE) with preliminary calibrations applied. They are distributed as one file per half-orbit in netCDF4 file format with a nominal latency of < 1.5 days.
num_resources 13
num_tags 20
title SWOT Level 2 Radiometer Brightness Temperatures and Troposphere Interim Data Product Version 1.0