STAR JPSS
Advanced Technology Microwave Sounder (ATMS)
Team Lead: Flavio Iturbide-Sanchez, Ninghai Sun
- ATMS SDR ATBD, (PDF, 1.78 MB)
- ATMS ICVS
Description
The Advanced Technology Microwave Sounder (ATMS) operates in conjunction with the CrIS to profile atmospheric temperature and moisture. Higher (spatial, temporal and spectral) resolution and more accurate sounding data from CrIS and ATMS will support continuing advances in data assimilation systems and NWP models to improve short- to medium-range weather forecasts.
ATMS consists of a microwave radiometer that:
- Measures microwave radiances at 22 channels (23.8 GHz to 183.3 GHz)
- Measures total-power, two-point external calibration
Heritage
- ATMS is the functional-equivalent follow-on to AMSU-A (Advanced Microwave Sounding Unit) and MHS (Microwave Humidity Sounder) with improved sampling and coverage
Provides 3 EDRs with CrIS:
- Atmospheric Vertical Moisture Profile
- Atmospheric Vertical Temperature Profile
- Pressure (Surface/Profile)
ATMS Public Spectral Response Function (SRF)
- ICVS Polar Satellite SRF Index
- NOAA-21 ATMS Spectral Response Function (SRF) Dataset, (ZIP, 1.59 MB, 7/21/2023)
- NOAA-20 ATMS Spectral Response Function (SRF) Dataset, (ZIP, 2.13 MB, 1/22/2018)
- S-NPP ATMS SRF Dataset, (ZIP, 3.03 MB, 2/24/2017)
- S-NPP ATMS SRF Dataset ReadMe, (PDF, 174 KB, 9/7/2016)
ATMS TDR/SDR Specifications
| Channel | Center Frequency (GHz) | Total Bandpass (GHz) | Accuracy (K) | NEDT (K) | EFOV Cross-Track (deg) | EFOV Along-Track (deg) | Polarization |
|---|---|---|---|---|---|---|---|
| 1 | 23.8 | 0.27 | 1 | 0.7 | 6.3 | 5.2 | QV |
| 2 | 31.4 | 0.18 | 1 | 0.8 | 6.3 | 5.2 | QV |
| 3 | 50.3 | 0.18 | 0.75 | 0.9 | 3.3 | 2.2 | QH |
| 4 | 51.76 | 0.4 | 0.75 | 0.7 | 3.3 | 2.2 | QH |
| 5 | 52.8 | 0.4 | 0.75 | 0.7 | 3.3 | 2.2 | QH |
| 6 | 53.596±0.115 | 0.17 | 0.75 | 0.7 | 3.3 | 2.2 | QH |
| 7 | 54.4 | 0.4 | 0.75 | 0.7 | 3.3 | 2.2 | QH |
| 8 | 54.94 | 0.4 | 0.75 | 0.7 | 3.3 | 2.2 | QH |
| 9 | 55.5 | 0.33 | 0.75 | 0.7 | 3.3 | 2.2 | QH |
| 10 | 57.290344 | 0.33 | 0.75 | 0.75 | 3.3 | 2.2 | QH |
| 11 | 57.290344±0.217 | 0.078 | 0.75 | 1.2 | 3.3 | 2.2 | QH |
| 12 | 57.290344±0.3222±0.048 | 0.036 | 0.75 | 1.2 | 3.3 | 2.2 | QH |
| 13 | 57.290344±0.3222±0.022 | 0.016 | 0.75 | 1.5 | 3.3 | 2.2 | QH |
| 14 | 57.290344±0.3222±0.010 | 0.008 | 0.75 | 2.4 | 3.3 | 2.2 | QH |
| 15 | 57.290344±0.3222±0.0045 | 0.003 | 0.75 | 3.6 | 3.3 | 2.2 | QH |
| 16 | 88.2 | 2 | 1 | 0.5 | 3.3 | 2.2 | QV |
| 17 | 165.5 | 3 | 1 | 0.6 | 2.2 | 1.1 | QH |
| 18 | 183.31±7 | 2 | 1 | 0.8 | 2.2 | 1.1 | QH |
| 19 | 183.31±4.5 | 2 | 1 | 0.8 | 2.2 | 1.1 | QH |
| 20 | 183.31±3 | 1 | 1 | 0.8 | 2.2 | 1.1 | QH |
| 21 | 183.31±1.8 | 1 | 1 | 0.8 | 2.2 | 1.1 | QH |
| 22 | 183.31±1 | 0.5 | 1 | 0.9 | 2.2 | 1.1 | QH |
QV = Quasi-Vertical QH = Quasi-Horizontal Dynamic Range are 0-330 (K) for all channels