Overview of ROM SAF activities and the generation of climate data records

Transcription

1 Overview of ROM SAF activities and the generation of climate data records Kent B. Lauritsen Hans Gleisner, Johannes K. Nielsen, Stig Syndergaard and ROM SAF team Danish Meteorological Institute, Copenhagen, Denmark COSMIC-IROWG 2017, Estes Park, CO, September

2 ROM SAF CDOP-3 Consortium CDOP-3: The 3rd Continuous Development and Operations Phase ( ) Leading Entity: (DMI, Copenhagen, DK) Cooperating Entities: UKMO x ECMWF x DMI x EUMETSAT x (ECMWF, Reading, UK) (Institute d Estudis Espacials de Catalunya, IEEC, Barcelona, Spain) IEEC x (Met Office, Exeter, UK) COSMIC-IROWG 2017, Estes Park, CO, September

3 EUMETSAT SAF s EUMETSAT European Center for Operational Meteorological Satellites, Darmstadt, Germany SAF s Satellite Applications Facilities are decentralized operational processing centers of EUMETSAT located in member countries SAF objectives - To develop, produce, disseminate, and archive operational products - Commitments related to (mainly) EUMETSAT missions - Current EUMETSAT missions: MSG and EPS/Metop - Future EUMETSAT missions: MTG, EPS-SG, Sentinel-6 (with NOAA) COSMIC-IROWG 2017, Estes Park, CO, September

4 8 EUMETSAT SAFs COSMIC-IROWG 2017, Estes Park, CO, September

5 MSG EPS Development / Initial Operations Phases MTG Continuous Continuous Development Development and Operations Phase and Operations Phase CDOP 1 CDOP 2 Continuous Development and Operations Phase CDOP 3 AC SAF NWP SAF CM SAF ROM SAF LSA SAF H SAF COSMIC-IROWG 2017, Estes Park, CO, September Continuous Continuous Development Development and Operations Phase and Operations Phase CDOP 4 CDOP 5 OSI SAF GRAS SAF 2028 EPS-SG NWC SAF O3M SAF years of SAF development and operations 5

6 ROM SAF CDOP-3 vision Overall theme - Radio Occultation Meteorology Main activities - Produce radio occultation products for EUMETSAT and other missions - Continuation of existing operational products (from CDOP-2) - Develop new products for EPS-SG: Day 2 ionosphere products - Products and software for NWP, climate applications, and space weather - Regular releases of ROPP with new features and routines - Generation of Climate Data Records through reprocessing Work is centered around three main areas - NWP: established field - Climate applications: emerging field - Ionosphere products: new field COSMIC-IROWG 2017, Estes Park, CO, September

7 RO missions commitments Mission NRT Offline Reprocessing Metop X X X Metop-SG X X X Jason-CS/ Sentinel-6 COSMIC-1 X X COSMIC-2 X (TBC) X (TBC) CHAMP GRACE GPS/MET GNOS TSX, TDX, PAZ Others X X X X TBD TBD TBD TBD TBD COSMIC-IROWG 2017, Estes Park, CO, September

8 Processing of RO data from Level 1A L1B (bending angle) processing: Based on ROPP_PP wave optics algorithm Ionosphere correction from linear combination of L1 and L2 bending angles Statistical optimization based on fitting to BAROCLIM background climatology L2A (refractivity) processing: Based on ROPP_PP Abel inversion L2B (1D-Var) processing: Based on ROPP_1DVAR 1D-Var algorithm Using ECMWF background and L2A refractivity observations as input L3 (gridding) processing: Based on ROMCLIM package (non-public package) Gridding of Level 1B, 2A, 2B, and other L2 variables (TPH, PBLH, geopotential height, dry temperature and pressure) Zonal latitude bands, Monthly mean climatologies COSMIC-IROWG 2017, Estes Park, CO, September

9 EUMETSAT HQ and ROM SAF NRT processing EUMETSAT HQ Level 1A Phase, amplitude, orbits, NB s L1B processing Wave Optics algorithm Level 1B Bending angles: L1, L2, LC ROM SAF NRT CHAIN Level 1B Bending angles: Opt L2A processing Abel transform algorithm Level 2A products Refractivity, dry temperature ECMWF forecasts (temperature, humidity, pressure) L2B & L2C processing 1D-Var algorithm Level 2B & 2C products Temperature, humidity, pressure, TPH, PBLH ROM SAF NRT Products COSMIC-IROWG 2017, Estes Park, CO, September

10 ROM SAF NRT and Offline processing overview EUMETSAT HQ Level 1A Phase, amplitude, orbits, NB s L1B processing Wave Optics algorithm L1B processing Wave Optics algorithm ROM SAF OFFLINE CHAIN ROM SAF NRT CHAIN Level 1B Bending angles: L1, L2, LC Level 1B Bending angles: Opt L2A processing Abel transform algorithm Level 1B products Bending angles: L1, L2, LC, Opt L2A processing Abel transform algorithm Level 2A products Refractivity, dry temperature ECMWF forecasts (temperature, humidity, pressure) Level 2A products Refractivity, dry temperature Level 3 processing Gridding algorithms L2B & L2C processing 1D-Var algorithm Level 2B & 2C products Temperature, humidity, pressure, TPH, PBLH L2B & L2C processing 1D-Var algorithm Level 2B & 2C products Temperature, humidity, pressure, TPH, PBLH Level 3 products Bending angle, refractivity, dry temperature, dry pressure, Temperature, humidity, pressure, TPH, PBLH, geopotential height ROM SAF NRT Products ROM SAF Offline Profile Products ROM SAF Offline Gridded Products COSMIC-IROWG 2017, Estes Park, CO, September

11 ROM SAF Offline processing overview Other data providers (COSMIC, CHAMP, GRACE L1B processing Wave Optics algorithm ROM SAF OFFLINE CHAIN Level 1B products Bending angles: L1, L2, LC, Opt ECMWF forecasts (temperature, humidity, pressure) L2A processing Abel transform algorithm Level 2A products Refractivity, dry temperature Level 3 processing Gridding algorithms L2B & L2C processing 1D-Var algorithm Level 2B & 2C products Temperature, humidity, pressure, TPH, PBLH Level 3 products Bending angle, refractivity, dry temperature, dry pressure, Temperature, humidity, pressure, TPH, PBLH, geopotential height ROM SAF Offline Profile Products ROM SAF Offline Gridded Products COSMIC-IROWG 2017, Estes Park, CO, September

12 ROM SAF reprocessing plans Reprocessing 1 - Generation of Climate Data Records (CDR) version Based on L1A excess phase data from EUMETSAT HQ and UCAR - RO data for Offline processing - Generation of Interim Climate Data Records (ICDR) version Based on Metop L1A excess phase data from EUMETSAT HQ - RO data for 2017 present Reprocessing 2 - Generation of CDR version Based on L1A excess phase data from EUMETSAT HQ (and others, TBD) - Planned activity in CDOP-3 ( ) COSMIC-IROWG 2017, Estes Park, CO, September

13 Contents of ROM SAF CDR V1.0 Data records: GRM-28-R1: Multi-mission ( ) GRM-29-R1: Metop-A and B ( ) GRM-30-R1: COSMIC ( ) GRM-32-R1: CHAMP ( ) GRM-33-R1: GRACE ( ) Contents: - Bending angles (Level 1B) - Refractivity and dry temperature (Level 2A) - Temperature, humidity, pressure (Level 2B) - Surface pressure, tropopause height (Level 2C) - Gridded data of all variables, including geopotential height (Level 3) COSMIC-IROWG 2017, Estes Park, CO, September

14 Reprocessing 1 (RE1) Climate Data Records (CDR) version 1.0 RE1 part A: } Part A based on EUMETSAT L1A Metop data } ~3.5 M profiles processed to profiles and Level 3 gridded data } Processing completed in September 2017 RE1 part B: } Part B based on UCAR L1A COSMIC, CHAMP, GRACE, Metop data } ~11 M profiles processed to profiles and Level 3 gridded data } Processing completed in May 2017 COSMIC-IROWG 2017, Estes Park, CO, September

15 CDR V1.0 status Status: The dataset CDR V1.0 is currently undergoing validation (S. Syndergaard, talk; J. K. Nielsen, poster; H. Gleisner, poster) Beta release of CDR V1.0 has been provided for beta testers (e.g. A. K. Steiner talk) EUMETSAT Delivery Readiness Review (DRR) planned for end of 2017 Data records expected to be released in Q1, 2018 and will become available at the ROM SAF website for download: Interim-CDR The CDR V1.0 dataset will be extended through the generation of ICDRs by a continuous offline processing every month The ICDR datasets will be based on Metop data Pre-operationel ICDR production planned for November 2017 Operational ICDR production planned for January 2018 COSMIC-IROWG 2017, Estes Park, CO, September

16 RE1B (UCAR) numbers Mean daily data numbers and accumulated data numbers COSMIC-IROWG 2017, Estes Park, CO, September

17 Refractivity bias O-B RE1A (EUM) B: ERA-I RE1B (UCAR) Filling of plotting database ongoing COSMIC-IROWG 2017, Estes Park, CO, September

18 Temperature bias S-A RE1A (EUM) RE1B (UCAR) 1D-Var based on ERA-I background COSMIC-IROWG 2017, Estes Park, CO, September

19 Gridded bending angle: Monthly mean anomalies Bending angle anomalies w.r.t. long-term mean, i.e. seasonal cycle retained in the data Weak seasonal cycle at low latitudes Tropopause clearly seen COSMIC-IROWG 2017, Estes Park, CO, September

20 Gridded bending angle: De-seasonalized Bending angle anomalies with seasonal cycle removed from the data Strong QBO signal COSMIC-IROWG 2017, Estes Park, CO, September

21 Gridded refractivity: De-seasonalized. same for refractivity COSMIC-IROWG 2017, Estes Park, CO, September

22 Gridded dry temperature: De-seasonalized. and for dry temperature COSMIC-IROWG 2017, Estes Park, CO, September

23 Gridded 1D-Var temperature: De-seasonalized. and for 1D-Var temperature The semi-annual temperature variability in the equatorial troposphere is dominated by ENSO COSMIC-IROWG 2017, Estes Park, CO, September

24 NRT Monitoring on ROM SAF website Monitoring of NRT Products: NWP Model and Data Flow - Completion of new NRT monitoring system - Became official system on ROM SAF website on 1 st May Faster, more comprehensive and more flexible than the old system New features - Side-by-side comparisons, e.g. refractivity-vs-bending angle, GRAS-A vs GRAS-B - Stats for groups of data, e.g. all COSMIC, all RO, all-but-gras - More plots, e.g. QC statistics, histograms of the occultation azimuth - Daily statistics, in addition to the existing monthly ones - Statistics on the reception of RO data at the Met Office, and statistics of the cost function in the Met Office assimilation system - Global maps of means, observation counts, departures etc, at a range of heights COSMIC-IROWG 2017, Estes Park, CO, September

25 New Federate Activity in CDOP-3 - Proposal for Federate Activity (FA) between ROM SAF and Wegener Center, Graz - New activity in ROM SAF CDOP-3-2 year activity funded by Austria FFG ATROMSAF1 project - Presented at ROM SAF Steering Group meeting on 11 May Updated proposal prepared for the SG (proposal currently undergoing financial validation) - KO meeting took place on June 2017 at DMI - Objectives: - Characterize structural uncertainty between ROM SAF ROPP and WEGC rops processing chains - Sensitivity of 1D-Var to choice of error-covariance matrix - Validation of gridded products against RAOBs, MIPAS, SABER COSMIC-IROWG 2017, Estes Park, CO, September

26 ROM SAF Visiting Scientist Program EUMETSAT SAF funding possibility - Activities related to product evolution and improvements - Validation of products - Feasibility studies - Demonstration products à Thank you to all who have contributed to the ROM SAF VS activities! - Many are present here in Estes Park - Feel free to contact us with new ideas COSMIC-IROWG 2017, Estes Park, CO, September

27 Fin More information at the ROM SAF website: COSMIC-IROWG 2017, Estes Park, CO, September