sign in sign up
<<
Home , Artemis (satellite), Envisat, MERIS, Meteosat, MetOp

MERIS US Workshop 14 July 2008

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS US Workshop

Agenda a.m.

ENVISAT/MERIS mission status, access to MERIS data 08:10-08:55 H. Laur (ESA) and distribution policy 08:55-09:10 Discussion Examples of the use of MERIS data in marine & land 09:10-09:40 P. Regner (ESA) applications

09:40-10:00 B. Arnone (NRL) Examples of MERIS data use for U.S. applications

10:00-10:20 S. Delwart (ESA) MERIS instrument overview

10:20-10:40 S. Delwart Instrument characterization overview 10:40-10:55 Discussion

10:55-11:10 Coffee break

11:10-11:30 S. Delwart Instrument calibration methods and results

11:30-11:50 Discussion

11:50-13:20 Lunch break

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS US Workshop

Agenda p.m.

13:20-13:50 L. Bourg (ACRI) Level 1 processing 13:50-14:10 Discussion 14:10-14:30 S. Delwart Vicarious calibration methods and results 14:30-14:50 Discussion

14:50-15:10 L. Bourg Overview Level 2 products

15:10-15:25 Coffee break

15:25-16:25 L. Bourg Level 2 processing

16:25-17:10 Discussion

17:10-17:25 P. Regner BEAM Toolbox

17:25-17:40 H. Laur Plans and status of the OLCI onboard GMES Sentinel-3

17:40-18:00 Discussion

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS US Workshop, July 14th, 2008, Washington (USA)

ENVISAT / MERIS mission status, access to MERIS data and distribution policy

Henri LAUR Envisat Mission Manager & Head of EO Missions Management Office

MERIS US Workshop, Silver Spring, July 14th, 2008 ESA: the

The purpose of ESA: An inter-governmental organisation with a mission to provide and promote - for exclusively peaceful purposes - the exploitation of: EAC - Cologne, • Space science, research & technology European Astronaut Centre • Space applications ESTEC - Noordwijk, the Netherlands development centre

ESRIN - Frascati, Italy HEADQUARTERS - Paris, France Observation centre Director General’s office and general administration ESOC - , Germany European Space Operations Centre

ESAC - Villafranca, European Space Astronomy Centre

Staff in post : ~ 2000

MERIS US Workshop, Silver Spring, July 14th, 2008 EO missions handled by ESA

1990 2000 2010 Meteo METEOSAT Second Generation METEOSAT M-1, 2, 3, 4, 5, 6, 7 MSG-1, -2, -3 Third Generation in cooperation with EUMETSAT METOP-1, -2, -3

Cryosat (2) (Polar Monitoring) Science (Gravity and GOCE Circulation Explorer) to better Earth SMOS (Soil moisture) understand the Earth Explorers ADM/Aeolus EarthCARE ERS-1, -2 ENVISAT Applications Sentinel Services GMES & to initiate long National missions (e.g. SPOT, term monitoring , TerraSAR, Cosmo-Skymed, ...) systems and services

and Third-Party Missions: European access to non-ESA missions ALOS, SPOT-4, Landsat, Kompsat-2, SeaWIFS, MODIS ...

MERIS US Workshop, Silver Spring, July 14th, 2008 Envisat MERIS 12 July 2008

Envisat mission and users

MERIS US Workshop, Silver Spring, July 14th, 2008 ENVISAT

 Launch by ESA  Injection on on March 1st, 2002 perfect

MERIS US Workshop, Silver Spring, July 14th, 2008 ENVISAT: the largest civilian EO satellite

• Dimensions Launch configuration: length 10.5 m envelope diameter 4.6 m In-Orbit configuration: 26m x 10m x 5m

• Mass Total satellite 8140 Kg Payload 2050 Kg

• Power Solar array power: 6.5 kW (EOL) Average power demand: Sun Eclipse (watts) (watts) Payload 1700 1750 Satellite 3275 2870

• Orbit 800 km as ERS, sun synchronous 10:00, i.e. 30 minutes before ERS-2

MERIS US Workshop, Silver Spring, July 14th, 2008 ENVISAT: 10 ways to monitor the Earth

Michelson Interferometric Passive Atmospheric Sounder Advanced Along Track Scanning Radiometer

Scanning Imaging Absorption Spectrometer for Atmospheric Medium Resolution Radiometer to Data Relay Satellite

Global Monitoring Doppler Orbitography and Radio-positioning by of Integrated by Satellite

to Ground Stations Altimeter 2

Advanced Synthetic Aperture Radar

• Launch 1st March 2002 • Orbit 800 km, sun synchronous 10:00 am, i.e. 30 minutes before ERS-2

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS instrument status

Status:

• Very stable and excellent performance since launch. MERIS • Full redundancy available.

• Calibration diffuser degrading as expected.

Current Risks and evolution: performances: Excellent • Very smooth ageing Expected evolution: • With the current ageing rate the required radiometric accuracy Excellent of the on-board diffusers can be maintained until 2013

MERIS US Workshop, Silver Spring, July 14th, 2008 Some Envisat results

Yellowstone caldera accelerated uplift: up to 7 cm / year

Science, 9 Nov. 2007: “ Accelerated Uplift and Magmatic Intrusion of the Yellowstone Caldera, 2004 to 2006”, Wu-Lung Chang, et al., Univ. of Utah (ESA Cat-1 project #2765)

ASAR Interferometry

MERIS US Workshop, Silver Spring, July 14th, 2008 Some Envisat results

September 200520062007

Arctic ice extent Canada Russia

Arctic Sea:

Fast decrease of extent

Greenland

Mosaic of ASAR images (10-days)

MERIS US Workshop, Silver Spring, July 14th, 2008 Some Envisat results

15 years of radar altimetry

ERS-1 / ERS-2 / Envisat 1992 - 2007

Mean sea level rise

This is one of the Essential Climate Variables (ECV)

MERIS US Workshop, Silver Spring, July 14th, 2008 Some Envisat results

NO2 concentration increase by 50% Envisat over China (during last 8 years) ERS-2 A. Richter, J. Burrows, Nature, Sept. 2005

MERIS US Workshop, Silver Spring, July 14th, 2008 Synergy between ENVISAT imaging instruments

AATSR

MERIS

ASAR Narrow Swath Modes

ASAR Wide Swath Mode

MERIS US Workshop, Silver Spring, July 14th, 2008 Synergy between ENVISAT imaging instruments

Hurricane Katrina

Wind field (derived Cloud Top from ASAR) Pressure (derived from MERIS)

MERIS US Workshop, Silver Spring, July 14th, 2008 ENVISAT mission: Arctic 2007 6 years ! Bam earthquake Tectonic uplift (Andaman)

First images ~2100 scientific Hurricane projects Katrina Global air + several GMES pollution pre-operational projects Ozone hole 2003

B-15A iceberg Chlorophyll Prestige tanker concentration oil slick

CO2 map

Envisat Envisat Symposium Symposium Salzburg (A) MERIS Montreux (CH) (A)ATSR Altimetry Launch MERIS InSAR Workshop ConferenceAtmosphericScience InSAR Calibration Validation InSAR Review Workshop Workshop Workshop Workshop Conference Workshop

Mar 02 Sep 02 Dec 02 Nov 03 Dec 03 Sep 04 Sep 05 Dec 05 Mar 06 May 06 Apr 07 Dec 07

MERIS US Workshop, Silver Spring, July 14th, 2008 Next MERIS workshop: Sept. 08, Frascati

Objectives: • Present latest results and status of research and development projects • Update MERIS/AATSR users on instrument performance and product quality • Formulate recommendations for improved data access and utilization, algorithms, user tools • Foster collaboration between MERIS and AATSR research groups • Inform users on the current status of the GMES Sentinel 3 mission • 105 oral presentations, 75 Posters

Registration at: http://earth.esa.int/meris_aatsr_2008

MERIS US Workshop, Silver Spring, July 14th, 2008 Next MERIS workshop: Sept. 08, Frascati

22 – 26 September 2008 Skagerrak MERIS FR Chlorophyll June 6, 2008

100 km

Denmark Baltic Sea

North Sea Germany http://earth.esa.int/meris_aatsr_2008

MERIS US Workshop, Silver Spring, July 14th, 2008 Current MERIS users

MERIS projects/users per country

358 Category 1 projects from the United States (all types of data)  65 US projects requesting MERIS data (i.e. 18 % of total)

 33% asking Red. Res. data, 66% asking Full Res. data

MERIS US Workshop, Silver Spring, July 14th, 2008 Envisat MERIS 11 July 2008

MERIS data acquisition

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS data acquisition

MERIS has 2 operation modes:

Reduced Resolution (RR): 1040 m x 1200 m  acquired systematically (43 minutes per orbit)

Full Resolution (FR): 260 m x 300 m  specific planning (currently ~18 min. per orbit)

Swath width is 1150 km global coverage is reached every 3 days

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS data acquisition

MERIS Full ResolutionME dataRIS acquisition:Full Resolution a gradual increase since beginning of mission 20

18 250 min/day

16

t 14 200 min/day i b r o

/

12 s e t u 150 min/day n

i 10 m e g 8 a r e v

A 6

4

2

0

3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 8 3 0 0 0 4 0 0 0 5 0 0 0 6 0 0 0 7 0 0 0 8 0 -0 - l- - -0 - l- - -0 - l- - -0 - l- - -0 - l- - -0 - n r t n r t n r t n r t n r t n r a p u c a p u c a p u c a p u c a p u c a p J A J O J A J O J A J O J A J O J A J O J A

Recent increase thanks to new Canadian stations

MERIS US Workshop, Silver Spring, July 14th, 2008 ENVISAT data acquisition

ENVISAT Ka-Band (real time & recorders) ARTEMIS

X-Band 75 % of MERIS FR (real time & 50 % of MERIS RR X-Band recorders) 50 % of AATSR

Ka- Band

KIRUNA

ESA/ESRIN

MATERA

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS data acquisition

Downlink in Real Time to Kiruna station

Downlink to Canadian stations

Recorded on board Downlink in Real Time for downlink via to ESRIN station via Artemis Artemis or Kiruna

In yellow, data that are downlinked in Real Time to ESA Kiruna station. In orange, data that are downlinked in Real Time to ESRIN station via Artemis. In white, data that are recorded on-board, then downlinked to Kiruna or via Artemis. In blue, data that are downlinked in Real Time to Canadian stations: • Temporary set-up: raw data sent by Internet to Kiruna for processing • Final set-up: processing in Canada (early 2009)

MERIS US Workshop, Silver Spring, July 14th, 2008 Envisat MERIS 11 July 2008

MERIS data access

MERIS US Workshop, Silver Spring, July 14th, 2008 ESA Earth Observation Policy

Data policy defined by ESA Member States in 1997:

 to stimulate a balanced development of Science, Public Utility and Commercial Applications, consistent with the mission objectives,  to maximize the beneficial use of data from ESA EO satellites.

Project Distribution Data costs purpose responsible

Category 1 use esa Research, Costs of reproduction Applications using ESA Development facilities/stations Free on Internet Most of ESA data (e.g. MERIS) Cat.1 use Terms & Conditions available only through Cat.1

competing Distributing Entities Data costs Category 2 use using ESA facilities defined by competing and/or agreements with Distributing Entities SAR & HR optical data non-ESA stations available in Cat.1 or Cat.2

MERIS US Workshop, Silver Spring, July 14th, 2008 Category 1 use Terms & Conditions

Main points:

• to use the data provided for Category 1 use only within the project team (i.e. PI and co-PIs)  i.e. no data redistribution outside the Cat.1 use project team

• to widely publish the project results in scientific publications or presentations,  with data citation: “[mission or instrument] Data provided by European Space Agency” (to facilitate ESA web searching of publications, and subsequent reporting on mission/instrument achievements)

Each PI shall sign the Category 1 use Terms & Conditions.

MERIS US Workshop, Silver Spring, July 14th, 2008 How to apply for MERIS data access ?

http://eopi.esa.in t

Application for Category 1 use data access can be submitted to ESA at any time using the ESA Earth Observation Principal Investigator portal (http://eopi.esa.int)

MERIS US Workshop, Silver Spring, July 14th, 2008 Registration or full proposal ?

 Registration

 Category 1 Project Proposal

MERIS US Workshop, Silver Spring, July 14th, 2008 Products systematically available on Internet  Registration

Updated list available at : http://eopi.esa.int

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS products available on Internet

NRT & recent data availability period coverage Systematic MERIS Red. Resolution (1200 m) (i.e. processing of all data) Rolling archive Worldwide Level 1 & Level 2 of last 15 days coverage Products available within 3 hrs from acquisition (95%) Systematic (i.e. processing of all data) MERIS Full Resolution (300 m) Rolling archive Europe L1 & L2 – Europe coverage Products available within 3 hrs (L1) of last 20 days coverage and within 12 hrs (L2) Simple registration from acquisition (90%) Systematic (i.e. processing of all data) North MERIS Full Resolution (300 m) Rolling archive Temporary set-up: America L1 & L2 – North America Products available within 9 hrs (L1) of last 20 days coverage and within 24 hrs (L2) from acquisition (90%)

Not systematic Few hours According to MERIS Full Resolution (300 m) On request after instrument Other geographical coverages Limited quantities acquisition planningFull proposal

NRT data from other Envisat sensors (e.g. ASAR, AATSR) also available on Internet

MERIS US Workshop, Silver Spring, July 14th, 2008 Which data access systems for NRT and recent data ?

Same NRT and recent dataset for both systems

NRT and recent data NRT and recent data Rolling Archives Web File Server (ftp or http) (http)

• Complete product (e.g. MERIS orbit) • Geographical selection (with product subset to decrease data volume for download) • Each acquisition station has its own rolling archive • One single web site for all acquisition stations

Current download problems at Kiruna station !

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS products available on Internet

Archived data

Archived availability period coverage

Systematic (i.e. for each re-processing MERIS Red. Resolution (1200 m) of the data) Whole mission Worldwide Level 1 & Level 2 since mid-2002 coverage

MERCI Web Interface Simple registration

Not systematic On request Whole mission Worldwide MERIS Full Resolution (300 m) Limited quantities on Internet since mid-2002 coverage Products usually provided Full proposal on DVD-Rom

MERIS US Workshop, Silver Spring, July 14th, 2008 Which data access systems for archived data ?

MERCI web interface, giving access to global MERIS Reduced Resolution data archived since mid-2002

25 TBytes of MERIS RR data

Cat.1 registration requested to http://eopi.esa.int

MERCI web interface will be used also for Envisat/ERS (A)ATSR archived data (Oct. 2008)

MERIS US Workshop, Silver Spring, July 14th, 2008 EOLI-SA: On-line multi-mission catalogue

To order archived MERIS FR data

Yesterday

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS Level 3 demonstration products

Chlorophyll-a Total Case 1 vapour column

Aerosol optical Aerosol Angstrom thickness coefficient

Global Vegetation Index

Available at: http://envisat.esa.int/level3 No registration required

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS data reprocessing

MERIS Reduced Resolution data reprocessing

 First data reprocessing in 2004

 Second data reprocessing in 2006

 Third data reprocessing was planned for 2nd half 2008, but is postponed to 2009 Main drivers:  Observed discrepancies in water leaving reflectances with match-ups (Boussole between 13% (490nm) and 31% (412nm) errors).

 Vicarious adjustment at Level 2: same method as applied by NASA for SeaWIFS (Franz et al. 2007 [Applied Optics 46]; Bailey et al. 2007, submitted to JGR). It consists in computing average multiplicative gain factors to correct the TOA signal using a database of match-ups (Boussole, or Moby, or both).

 New aerosol properties tables.

MERIS US Workshop, Silver Spring, July 14th, 2008 Envisat MERIS 10 July 2008

MERIS science team

MERIS US Workshop, Silver Spring, July 14th, 2008 MERIS data quality: organisation

Mission Manager MERIS Mission requirements & evolutions Request/approval & reporting Quality Working Group (MERIS QWG)

Algorithm dev. Routine QC MERIS Product validation Processor ESA ESL’s Processor validation maintenance DPQC PDS integration Engineering Data and Product Support Laboratories Support for Quality Control Validation Campaigns

CAL/VAL Teams

MERIS US Workshop, Silver Spring, July 14th, 2008 Envisat MERIS 10 July 2008

MERIS documentation

MERIS US Workshop, Silver Spring, July 14th, 2008 Documentation about MERIS data

http://envisat.esa.int

[email protected]

MERIS US Workshop, Silver Spring, July 14th, 2008 Documentation about MERIS data

http://envisat.esa.int/instruments/meris

MERIS Product Handbook

MERIS US Workshop, Silver Spring, July 14th, 2008 Documentation about MERIS data

http://envisat.esa.int/handbooks/meris/ Extract of DPM2

MERIS US Workshop, Silver Spring, July 14th, 2008 Documentation about MERIS data

Cyclic Report: Detailed information of every 35 day period of:  instrument performance  modifications in the processing chain  results of cal/val activities

http://earth.esa.int/pcs/envisat/meris/reports

MERIS US Workshop, Silver Spring, July 14th, 2008 Envisat MERIS 10 July 2008

Envisat mission duration

MERIS US Workshop, Silver Spring, July 14th, 2008 Envisat satellite status and evolution

• Envisat satellite is in good health and with an expected reasonable evolution.  MERIS instrument is in excellent shape.

• Efficient consumption of on-board hydrazine allow to operate nominally Envisat until 2010. But most of hydrazine will be consumed in 2010.

 ESA has elaborated a technical solution to further extend mission by 3 years, i.e. until 2013, based on a decrease of orbit altitude.

 the solution allows to carry on with the current Envisat applications, including MERIS applications.

• Funding for Envisat operations extension (2011-2013) is however not yet granted.

Prestige tanker Ozone hole Bam earthquake Chlorophyll oil slick 2003 concentration

Global air B-15A Hurricane pollution iceberg Katrina CO2 map

MERIS US Workshop, Silver Spring, July 14th, 2008 Envisat mission extension

Envisat 3-years extension [2011-2013]: • the need to prevent gaps for long-time series essential for Earth Science • a growing demand for operational data for GMES

2008 2009 2010 2011 2012 2013 2014

ERS-2 Envisat Sentinel-1a SAR ASAR Launch end 2011 Sentinel-1b Risk of data gap MERIS Sentinel-3a ATSR AATSR Launch early 2013 Altimetry Altimetry & Sentinel-3b

Need of GOMOS back-up Sentinel-4 ? GOME SCIAMACHY MIPAS Sentinel-5 ? Scatt MetOp Envisat extension: funding not yet granted

MERIS US Workshop, Silver Spring, July 14th, 2008 Envisat MERIS 11 February 2008

http://www.esa.int

http://earth.esa.int

http://miravi.eo.esa.int

MERIS US Workshop, Silver Spring, July 14th, 2008