Skip to main content

ESA Data Ontology

Search from vocabulary

Content language

Concept information

Instruments > Earth Remote Sensing Instruments > Passive Remote Sensing > Profilers/Sounders > SSM/T-2

Preferred term

SSM/T-2  

Definition

  • [Source: National Space Science Data Center, http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=1994-057A-07 ] This instrument, SSM/T-2, is designed to provide global monitoring of the concentration of water vapor in the atmosphere under all sky conditions by taking advantage of the reduced sensitivity of the microwave region to cloud attenuation. SSM/T-2 is a cross-tracking scanning, five channel, passive total power microwave radiometer system which consists of a single, self-contained module with a step-scan motion in the cross-track direction of +/- 40.5 degrees. The SSM/T-2 scan mechanism is synchronized with the SSM/T-1 so that the beam cell patterns of the two sensor coincide. SSM/T-2 has three channels situated symmetrically about the 183.31 GHz water vapor resonance line and two window channels. This instrument was flown on all DMSP Block 5D-2 satellites starting with F11 (launched in 1991). The SSM/T-2 observation rate is 7.5 scans per minute. There are 28 observations (beam positions) per scan for each of the five channels, with each observation having a spatial resolution of approximately 48 km. All five channels have coincident centers. The total swath width for the SSM/T-2 is approximately 1500 km. URL for further information: http://ghrc.msfc.nasa.gov/uso/readme/ssmt2.html Group: Instrument_Details Entry_ID: SSM/T-2 Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Passive Remote Sensing Instrument_Type: Profilers/Sounders Short_Name: SSM/T-2 Long_Name: Special Sensor Microwave/Temperature Profiler End_Group Group: Associated_Platforms Short_Name: DMSP 5D-2/F11 Short_Name: DMSP 5D-2/F12 Short_Name: DMSP 5D-2/F13 Short_Name: DMSP 5D-2/F14 Short_Name: DMSP 5D-3/F15 End_Group Group: Spectral_Frequency_Information Wavelength_Keyword: Microwave Number_Channels: 3 Spectral_Frequency_Coverage_Range: 183.31 GHz End_Group Online_Resource: http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=1994-057A-07 Online_Resource: http://www.ngdc.noaa.gov/dmsp/sensors/ssmt2.html Group: Instrument_Logistics Instrument_Owner: Department of Defense-Department of the Air Force (United States) End_Group End_Group (en)

Broader concept

URI

https://gcmd.earthdata.nasa.gov/kms/concept/33690bf4-5877-4ff4-b0a1-f8c4c94b79a7

Download this concept:

RDF/XML TURTLE JSON-LD Last modified 12/6/20