eum/ops/vwg/11/0361gewex/globvapour water vapour workshop issue 1 05/03/2011 eumetsat activities...

EUM/OPS/VWG/11/0361 GEWEX/GlobVapour Water Vapour WorkshopIssue 105/03/2011

EUMETSAT activities towards FCDRs for water vapour

Slide: 1

Jörg SchulzEUMETSAT


Slide: 2

Content

• Background

• Observations

• Activities Meteosat

• Activities Metop

• Plan


EUMETSAT’s Climate Monitoring Implementation Plan

EUMETSAT Convention (November 2000):

Commitment to support Climate Monitoring and Climate Change Detection

Council Resolution (July 2009):

• Consideration of Climate requirements in programme preparation

• Generation of Climate Data Records (CDR) Fundamental and Thematic (FCDR+TCDR)

• Internal and external coordination and communication

Climate Monitoring Implementation Plan (July 2010)• Description of tasks implementing the

Council Resolution

• Instrument to coordinate and document related activities, and to monitor its progress (towards Delegate Bodies)

• Links to frameworks in which related (sub-)tasks are implemented

SAF

CAF

SCOPE-CM

GSICS

CEOS

ESA CCI


Providing data for climate monitoring

Past and current satellites and programmes:• Meteosat: since 1977, second generation since 2002• EPS/Metop: since 2006• Jason-2: since 2008, continuing Jason-1 and TOPEX

Poseidon

New and future programmes:• Meteosat Third Generation (MTG)• EPS-SG• Jason-3 • Operator for ESA/EC Sentinels-3, -4 and -5

Taking into account requirements and principles of the GCOS

Climate Monitoring Principals related to:- calibration, characterisation, continuity, consistency and

sustainability -

Together with a long-term planning with a horizon until 2035.

Meteosat Transition Programme (1st generation)

Meteosat Second Generation

EUMETSAT Polar System

Jason OST Mission


Water Vapour observations for climate

• MFG, MSG, MTG all have 6.3 m channel, creates time series from 1982 – 2038;

• MSG and MTG have 7.3 m channel, creates time series from 2004 – 2038;

• MTG-I will have 914 nm channel and MTG-S has on IRS 800 channels in LWIR (700 – 1210 cm-1 or 14.3 – 8.3 µm) and 920 channels in the MWIR (1600 – 2175 cm-1 or 6.25 – 4.6 µm);

• Metop carries IASI, IR spectrum 4-50 m that is planned to be continued with IASI-NG on EPS-SG until 2040;

• Metop continues NOAA HIRS observations available since 1979 until Metop-B to be launched in 2012 (after HIRS can be constructed from IASI);

• Metop continues NOAA AMSU-B observations with MHS, this mission has highest priority for EPS-NG;

• Metop continues GOME/Sciamachy record with GOME-2 until ~2020, GMES-5 is planned to continue this series;

• Metop contributes with GRAS to the network of RO missions.Slide: 5


METEOSAT 1984-2005 Archive evaluation using radiosondes

METEOSAT2MET3

MET4

MET3

METEOSAT4 METEOSAT5 METEOSAT7MET6

Comparisons between the METEOSAT BTs and the simulated BTs from radoisoundings: (+) represent the raw data, (◊) represent the homogeneised data. The histogram shows the nb of soundings used for comparison.

Courtesy of Helene Brogniez and Rémy Roca, LMD

Can we do better than that and extend to SEVIRI?

ISCCP DX Normalized Instead of nominal

Upgrade of calibration technique (van de Berg, et al., 95)Upgrade of calibration technique

(Schmetz, 1989)


Plan for MVIRI and SEVIRI Infrared Intercalibration

• Use inter-calibrated HIRS from NOAA/NCDC (adjusted to HIRS on NOAA12) with GSICS collocation and inter-calibration procedures taking HIRS as truth;

• Control intercalibration using ARSA (Analyzed Radio Soundings Archive) database from LMD;

• Control intercalibration in overlapping areas after IODC start, e.g., Met-5 vs. Met-7;

• Derive AMV and other parameters from inter-calibrated radiance and document changes.

• Deliver both FCDR data and corrections to be applied by expert users (SAFs, ECMWF reanalysis);

• Need to implement common cloud detection (need one for both);

• Development and implementation targeted for 2011/2012;

Longer Term:

• Implement inter-calibration based on IASI (based on GSICS and collaboration with projects in the NOAA CDR program)).

• Estimate potential and feasibility of further improving MVIRI level 1.5 by reanalysing the image archive.

Slide: 7


Meteosat-9 vs. IASI

Slide: 8


Operational near real time monitoring of L0/L1 helps to assess instrument performance and to identify issues

Slide: 9

ITSC-17 April 2010

Rad

ian

ce D

iffere

nce in

BR

T a

t 2

80

K [

K]

CH 9

CH 12 (6.52 m)

CH 11 (7,33m)

CH 8 (11.9 m)

CH 10

340714

HIRS MCT detector channels 8 to 12 (SURF, O3, H20) from IASI L0/L1 NRT monitoring

Figure: Lars Fiedler, EUMETSAT


N-19 MHS Validation using SNO’s

=> Significant Bias due to high space view correction factors

=> High space view correction factors due to wrong noise floor of antenna pattern

Figures: Jörg Ackermann, EUMETSAT


N-19 MHS Validation using SNO’s

=> Correction of the antenna pattern

=> Re-calculation of the space view correction => Repetition of the SNO analysis

Figures: Jörg Ackermann, EUMETSAT


Metop-A and Metop-B

Slide: 12

Metop-A

Metop-A + Metop-B

Metop-A/B Overlap

Metop-A/B Coincident Scanning Angles

Þ Potential Applications:

AVHRR/3 winds in non-polar areas

Estimate asymmetric scan bias for AMSU/MHS

Figure: Jörg Ackermann, EUMETSAT


EUMETSAT Climate Data Records Overview (~next 3 years)

Aim for combined FCDR for Meteosat series (MVIRI, SEVIRI homogenised radiance record);Aim incrementally for FCDRs for all Metop instruments (first records using latest operational algorithm version are called interim FCDR);Aim to support NOAA STAR/NCDC FCDRs for all NOAA heritage instruments on Metop (AVHRR, HIRS, AMSU-A/B, MHS);Aim at consistent radio-occultation data (bending angles) back to 2001 from GRAS, CHAMP, GRACE and COSMIC sensors;TCDR production aims at ECVs plus typical data for assimilation in atm. reanalysis as Atmospheric Motion Vectors (MVIRI, SEVIRI, AVHRR);FCDR and TCDR production is performed within the distributed ground segment, i.e., at Central Application Facility (CAF) and Satellite Application Facilities (SAFs); Supports specific international activities as WMO (GSICS, SCOPE-CM), ECMWF Reanalysis, WCRP (GEWEX Radiation Panel Reprocessing and Assessment), ESA-Climate Change Initiative.

Slide: 13

eum/ops/vwg/11/0361gewex/globvapour water vapour workshop issue 1 05/03/2011 eumetsat activities...

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