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Description

This level 3 monthly product is generated from the RAMSES (Retrieval Algorithm for Microwave Sounders in Earth Science) II algorithm.The RAMSES II algorithm is a microwave only retrieval algorithm using observations from the Suomi-National Polar-orbiting Partnership (NPP) Advanced Technology Microwave Sounder (ATMS) instrument. The ATMS instrument used for this product is a cross-track scanner with 22 channels in spectral bands from 23 GHz through 183 GHz. The RAMSES II retrieval products contain a variety of geophysical parameters retrieved from ATMS measurements, including profiles of temperature, water in all phases as well as surface properties. The RAMSES II algorithm doesn't have a cloud clearing process and produces all weather retrieval

This monthly one degree latitude by one degree longitude level-3 product starts with level-2 retrieval products with QC values of 0 (best), 1 (good), and 2 (don't use) which are provided for each variable.

Product Summary

Platforms
Suomi-NPP
Instruments
ATMS
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Geographic Region
GLOBAL
Coordinate System
GEODETIC
Granule Spatial Representation
GEODETIC
Temporal Extent
2011-12-01
Data Partner
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/GESDI
Concept ID
C2560865554-GES_DISC
Data State
ACTIVE
Number of Files/Granules
163
Processing Level
3
Published
Updated
Science Keywords
Surface Pressure ,
Air Temperature ,
Upper Air Temperature ,
Water Vapor Profiles ,
Skin Temperature ,
Sea Surface Temperature ,
Specific Humidity ,
Relative Humidity ,
Liquid Water Equivalent

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Lambrigtsen, B. (2023). Sounder SIPS: Suomi NPP ATMS Level 3 RAMSES2 Standard Gridded Monthly V3 [Data set]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/37DZJO03XJVJ Date Accessed: 2025-12-14

Documents

READ-ME

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)