IPWG, 4 th Workshop, Beijing, 13-17 October 20081 UPDATE ON THE STATUS OF PRECIPITATION PRODUCTS IN THE EUMETSAT SATELLITE APPLICATION FACILITY ON HYDROLOGY.

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Presentation transcript:

IPWG, 4 th Workshop, Beijing, October UPDATE ON THE STATUS OF PRECIPITATION PRODUCTS IN THE EUMETSAT SATELLITE APPLICATION FACILITY ON HYDROLOGY AND WATER MANAGEMENT (H-SAF) Bizzarro Bizzarri, on behalf of the H-SAF consortium Contents Background, objectives, partnership Introduction to the precipitation products, including: - algorithm architecture - examples of products routinely available Indication of access mode.

IPWG, 4 th Workshop, Beijing, October SATELLITE APPLICATION FACILITIES (SAF’s): decentralised elements of the EUMETSAT Application Ground Segment MeteosatMetOp-EPSOther satellites (NOAA, TRMM, AQUA,...) EUMETSAT Central Facility Nowcasting SAF Ocean & Ice SAF Climate SAF NWP SAF Ozone SAF Land SAF GRAS Meteo SAF Hydrology SAF U S E R S New !

IPWG, 4 th Workshop, Beijing, October Objectives of H-SAF The objectives of H-SAF are: to provide new satellite-derived products: - precipitation (liquid, solid, rate, cumulate) - soil moisture (at surface, in the roots region) - snow parameters (cover, melting conditions, water equivalent); to perform independent validation of the usefulness of the new products for hydrological applications.

IPWG, 4 th Workshop, Beijing, October Composition of the H-SAF Consortium

IPWG, 4 th Workshop, Beijing, October 20085

6 NOAA-18 AMSU-A + MHS 13:40 a NOAA-17 AMSU-A + AMSU-B 10:20 d MetOp-1 AMSU-A + MHS 9:30 d DMSP F-13 SSM/I 6:30 d DMSP F-16 SSMIS 8:10 d DMSP F-17 SSMIS 5:30 d One-orbit coverage from six operational meteorological satellites equipped with MW instruments in years The figure assumes all satellites cross the ascending or descending equatorial node at 12 UTC. In red, conical scanning imagers (swath 1400 km); in blue cross-track scanning sounders (swath 2200 km).

IPWG, 4 th Workshop, Beijing, October SSM/I – SSMIS processing chainAMSU – MHS processing chain LEO/MW + GEO/IR processing chain SSM/I DMSP  F15 Processor SSMIS DMSP  F16 Processor AMSU-A NOAA, MetOp Processor AMSU-B NOAA  17 Processor MHS NOAA  18, MetOp Processor SEVIRI Meteosat  8 Processor PR-OBS-1 – Precipitation rate from conical scanners PR-OBS-3&4– Precipitation rate from blended LEO/MW and GEO/IR Accumulated precipitation processing chain PR-OBS-5 – Accumulated precipitation from blended LEO/MW and GEO/IR End-users and H-SAF central archive Quality control PR-OBS-2 – Precipitation rate from cross-track scanners Quality control Observed precipitation products generation chain.

IPWG, 4 th Workshop, Beijing, October Flow chart of the SSM/I-SSMIS precipitation rate processing chain Meteorological events Simulated cloud microphysics Simulated MW radiances Cloud-Radiation Database Cloud Resolving Model Radiative Transfer Model Instrument model Actual SSM/I - SSMIS data (pre-processed) Ingestion preparation model Precipitation retrieval model Uncertainty estimator model Error structure database PRECIPITATION RATE ERROR ESTIMATE OFF-LINE ACTIVITYREAL-TIME ACTIVITY

IPWG, 4 th Workshop, Beijing, October Example of precipitation map from SSM/I - Left: retrieved precipitation; right: brightness temperature in channel 85.5 GHz, V polarisation - Satellite DMSP-F14, day 26 July 2008, pass UTC (northbound). PR-OBS-1 is routinely available at ftp://ftp.meteoam.it

IPWG, 4 th Workshop, Beijing, October AMSU-A (48 km) AMSU-B or MHS (16 km) AMSU-A (16 km) Extraction of high-spatial frequency content Geometrical manipulations (reduction to vertical viewing) Cloud microphysics provision (cloud radiation database from MM5 simulations) Retrieval algorithm (neural network) PRECIPITATION RATE Flow chart of the AMSU-MHS precipitation rate processing chain

IPWG, 4 th Workshop, Beijing, October Example of precipitation map from AMSU - Left: retrieved precipitation; right: brightness temperature in channel 89 GHz of AMSU-B, V polarisation - Satellite NOAA-15, day 14 Sep 2008, pass 15:00-15:10 UTC (northbound). PR-OBS-2 is routinely available at ftp://ftp.meteoam.it

IPWG, 4 th Workshop, Beijing, October SSM/I-SSMIS AMSU-MHS SEVIRI 15-min images ~ 3-hourly sequence of MW observations Lookup tables updating Rapid-update algorithm Extraction of dynamical info Morphing algorithm (not ready) PRECIPITATION RATE Flow chart of the LEO/MW-GEO/IR-blending precipitation rate processing chain

IPWG, 4 th Workshop, Beijing, October Example of map of precipitation rate from SEVIRI + PR-OBS-2. Meteosat-9, day 03 Feb 2008, time 08:15 UTC. PR-OBS-3 is routinely available at ftp://ftp.meteoam.it

IPWG, 4 th Workshop, Beijing, October IR radiances from GEO calibrated by MW-derived precipitation rate (Rapid Update) (PR-OBS -3) Library of error structure of PR-OBS -3 PR-OBS -3 products archive MW-derived precipitation rate continuised by IR imagery from GEO (Morphing) (PR-OBS -4) Library of error structure of PR-OBS -4 PR-OBS -4 products archive On-line meteorological information (surface wind, temperature, rain gauge, NWP output) Accumulated precipitation in the last 24 h Accumulated precipitation in the last 12 h Accumulated precipitation in the last 6 h Accumulated precipitation in the last 3 h Flow chart of the accumulated precipitation processing chain. PR-OBS-5 products generation Quality control

IPWG, 4 th Workshop, Beijing, October hourly SEVIRI images (10.8 μm channel) at 00, 06, 12, 18 and 24 UTC and the corresponding 24-h accumulated precipitation (PR-OBS-5). 1 st February Maps for the accumulated precipitation in the previous 3, 6, 12 and 24 h are generated each 3 hours PR-OBS-5 is routinely available at ftp://ftp.meteoam.it.

IPWG, 4 th Workshop, Beijing, October Instantaneous precipitation on 8 February 2008 at 00 UTC and accumulated precipitation in the previous 24 h, computed by the COSMO-ME NWP model. Each 3 hours the model generates the map of instantaneous precipitation (at 00, 03, 06, 09, 12, 15, 18, 21 UTC) and the maps of accumulated precipitation in the previous 3, 6, 12 and 24 hours. PR-ASS-1 is routinely available at ftp://ftp.meteoam.it.

IPWG, 4 th Workshop, Beijing, October CONCLUSIONS The H-SAF Development Phase ( ) is now running since 3 years. Of the envisaged 6 precipitation products, 5 are being generated routinely. The missing one (PR-OBS-4, the MW/IR blending by “morphing”) is expected to be ready in mid However, according to the developer (Vincenzo Levizzani), the capability to meet operational requirements (specifically timeliness) is not sure. Data are used by the Product validation teams and for impact studies in the Hydrological validation programme. All products can be accessed from the Italian Meteorological Service ftp site. Access is restricted to beta users (username and password needed), but IPWG members are entitled to get access. The H-SAF web site is open: It contains, i.a.: - ATDD-2.0 (Algorithms Theoretical Definition Document - PUM-1.0 (Products User Manual).