Water vapour sounding of the upper troposphere
EARS-VASS (Vertical Atmospheric Sounding Service), complements the Metop and the US POES and SNPP/JPSS satellites currently covered by EARS.
04 March 2021
27 April 2020
EARS-VASS is composed of two products: Level 1b MWHS-II and MWTS-II. The data contain for all spectral channels and all Fields of view the calibrated and geolocated L1 data in BUFR format.
The MWHS-II instrument has the ability to perform the vertical atmosphere sounding also in cloudy conditions.
Like the MHS instrument on Metop and NOAA satellites, it focuses on the water vapour sounding of the upper troposphere, but also provides information on temperature profiles.
The MWTS-II instrument provides information on temperature profiles and is comparable to AMSU-A.
EARS-VASS service specification
FY-3D (MWHS, MHTS), as shown on the tables on the Regional Data Service/EARS webpage.
FY3_IPP as provided by the CMA, configured and run by EUMETSAT AAPP as provided by NWP-SAF.
One file per station pass and instrument.
Duplicate segments removed before dissemination.
Products via EUMETCast Europe
MWHS2 and MWTS2. All spectral channels, all Fields of View. Calibrated and geolocated. BUFR format.
Timeliness via EUMETCast
Products via RMDCN/GTS
As for EUMETCast.
Archived in EUMETSAT
For more information on EARS-VASS see TD 14 - EUMETSAT Advanced Retransmission Service Technical Description
Full details on products can be found in the Product Navigator: Regional Atmospheric Sounding Service – Feng-Yun - 3
EARS-ASCAT collects ASCAT instrument data from Metop passes, via a network of HRPT stations, and re-transmits Level 2 products via EUMETCast.
EARS-ATMS collects data from the ATMS instrument on board the JPSS spacecrafts, operated by NASA and NOAA.
EARS-ATOVS provides the European meteorological community with sounder data covering data-sparse areas, within 30 minutes of the instrument observations.
EARS-AVHRR collects data from the primary morning and afternoon orbits of Metop and NOAA satellites via a network of AHRPT/HRPT stations. It re-transmits them via EUMETCast.
The EARS-CrIS service collects data from the CrIS instrument onboard the JPSS spacecrafts, operated by NASA and NOAA.
EARS-IASI collects IASI instrument data from Metop satellite-passes via a network of HRPT stations and re-transmits Level 1c and pilot Level 2 products.
EARS-MERSI complements the Metop and the US POES and SNPP/JPSS satellites currently covered by EARS.
The EARS-VIIRS service collects data from the VIIRS instrument onboard the JPSS spacecrafts.