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RA-2/MWR Cross-Calibration and Validation Team Status Report at PM8. Jérôme Benveniste RA-2/MWR C.-C.V.Team Coordinator ENVISAT Cal/Val PM8 , ESRIN, 5 December 2001. RA-2/MWR CCVT status report for ENVISAT Cal/Val PM8 (5/12/01). Table of Content Recall of CCVT objectives

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ra 2 mwr cross calibration and validation team status report at pm8

RA-2/MWR Cross-Calibration and Validation Team Status Report at PM8

Jérôme Benveniste

RA-2/MWR C.-C.V.Team Coordinator

ENVISAT Cal/Val PM8 , ESRIN, 5 December 2001

ra 2 mwr ccvt status report for envisat cal val pm8 5 12 01
RA-2/MWR CCVT status report for ENVISAT Cal/Val PM8 (5/12/01)

Table of Content

  • Recall of CCVT objectives
  • Status of completion of the actions from PM7
  • Cal/Val SoW's
  • Logical approach and schedule
  • RA-2/MWR CCVT Readiness Review
  • Level 2 Algorithm Verification Subgroup’s report by Maria Pilar Milagro-Perez
  • Data circulation coordinator’s report by Luciano Rempicci
  • MWR Subgroup’s report by Pierre Femenias (ill today)
objectives for ra 2 mwr ccvt
Objectives for RA-2/MWR CCVT
  • Cross-calibrated data products
    • WRT ERS or other altimeters (T-P, GFO, Jason)
    • Ensure ESA data products consistency
  • Validated data products
    • geophysical validation of the data products content and the processing models
    • Authorizing distribution to all users
      • Within 6 months of launch
cal val activities planned
Cal/Val Activities Planned
  • Absolute calibration of the RA-2 main geophysical parameters:
    • Range, Sigma0.

(this is done in the RA-2 CT)

  • Cross-calibration against ERS (and/or TP, GFO, Jason) of the RA-2 main geophysical parameters:
    • Range, Significant Wave Height and Wind Speed (Sigma0).
  • Calibration of MWR against radiosonde measurements of water vapour and model.
  • Cross-calibration against ERS (and/or other radiometers) of MWR brightness temperatures and water vapour.
  • All RA-2/MWR products validation
    • Validation against models, buoys, tide gauge data, climatology data
  • Preparation for long-term drifts detection for range, wave height, wind speed, water vapour.
status of completion of the actions from pm7
Status of completion of the actions from PM7
  • Action 7.1: Next rehearsal
    • E-mail to PSnoeij on 30 November

cf. Data Circulation coordinator presentation

  • Action 7.2: SoWs and Contracts
    • See next slide
ccvteam members sows and contracts
CCVTeam Members SoWs and Contracts

Contracts: 6 out of 8 established

    • Established
      • Eymard, CETP, F
      • Scharroo, DUT, NL
      • Cotton, SOS, UK
      • Moore, Newcastle Univ, UK
      • Breivik, N, (by E. Attema, AO499)
      • MSSL, UK (ESL)
    • Negotiation ongoing for:
      • CLS, F (ESL)
      • Alenia, I (ESL)
  • SoW and T&C: signed by 5 out of 11 PIs
    • All have been reminded in September and again in November
    • The Riegber case not finalised yet (no response).
logical approach overview and two examples
Logical Approach Overview and Two Examples
  • Overview
  • Sigma0 Cross-Calibration and Validation
  • Sea State Bias Estimation
ccvt logical approach overview
CCVT Logical Approach Overview

SODAP

Instrument and L1B verif

L2 verif

Cross-Calibration

Validation

Long term drift monitoring

USERS

sigma0 cross calibration and validation
Sigma0 Cross-Calibration and Validation

Ku-Sigma0 Global Assessement

S-Sigma0 Global Assessement

Before L1b Verification

(< L+3)

Adjust Ku-Sigma0 wrt ERS-2

Wind Speed valid with Buoys

Wind Speed valid with METEO

Rain Flag Coeff Determin.

Sigma0 Monitoring over sea

Sigma0 Monitoring over land

After L1b Verification (L+3/L+6)

sea state bias estimation validation
Sea State Bias Estimation & Validation

Preliminary SSB Estimation

Validation

Cross-Calibration

One cycle of GDR

(L+5)

(L+8)

Consolidated SSB Estimation

Validation

Cross-Calibration

All available cycles of GDR

Products for all users

NB: Final SSB Estimation on 1 year of data

ra 2 mwr ccvteam activity
RA-2/MWR CCVTeam Activity
  • RA-2/MWR CCVT Plenary meeting held on 12 September 2001
    • Minutes published
    • Open actions:
      • Release “standard ERS-2 OPR and WAP data set configuration” document
      • Distribute WAP data in quasi-NRT mode (so-called WAP01) to CCVteam (pending management decision - UK-PAF contract)
      • Deliver draft RA-2/MWR Product Handbook to CCVT
  • RA-2/MWR CCVT Plan document version 1.0 released 12/09/01
  • Data requirement finalised
    • incorporation of RA-2 data requests from POD group.
  • Coordination with F-PAC regarding level 2 algorithm verification and product validation
  • RA-2/MWR CCVT Internal meeting held 04/12/01 in ESRIN
ra 2 mwr ccvteam readiness
RA-2/MWR CCVTeam Readiness
  • Few pending actions to be closed
    • their closure do not pose difficulty
  • For Cross-Calibration, the ERS-2 pointing performance is being monitored
    • Mispointing estimation is operational in the OPR product
    • “best pointing” subset of data can be selected
    • deltas with Topex at crossovers to validate selection
ra 2 mwr ccvteam readiness1
RA-2/MWR CCVTeam Readiness
  • The RA-2/MWR CCVTeam is ready for the Launch