ers and envisat sar
TRANSCRIPT
ERS and Envisat SAR
Polar Space Task Group (PSTG)
SAR Working Group
1st PSTG SAR working group meeting, 12 November 2012
Since 20+ years, ESA supports the Cryosphere communities with the provision of
Earth Observation data:
• in the 80’s, with Landsat (European Arctic),
• since 1991, through ERS-1 and ERS-2 (SAR, Altimetry, Ozone monitoring),
• from 2002, with an increased capacity provided by Envisat (SAR, Altimetry,
Atmospheric Chemistry, Imaging Spectrometer)
• from 2009, with the Earth Explorers (GOCE, SMOS, CryoSat).
ESA was the initiator of the space agencies contribution to International Polar
Year 2007-2008 (GIIPSY initiative).
ESA is very open to collaboration with other space agencies to further improve
its support to cryosphere science.
Background of ESA’s interest in PSTG
1st PSTG SAR working group meeting, 12 November 2012
08 09 10 11 12 13 14 15 16 17
1995
2002
ESA Earth Observation Missions
Data management (e.g. access, reprocessing) to be ensured beyond satellite operations (EOEP-4)
ERS-2
Envisat
Sentinel-1A, -1B
Sentinel-2A, -2B
Sentinel-3A, -3B
Sentinel-5P
1991 2000
ERS-1
Missions operations funded by ESA EOEP-3 (5 years)
Missions operations funded by ESA EOEP-4 (4.5 years)
(to be decided in Nov 2012)
Missions operations funded
by European Commission
2012
GOCE
SMOS Foreseen extension
CryoSat Foreseen extension
ADM-Aeolus
EarthCARE
SWARM
ESA EO
data gap
2011
ESA IPY contribution:
Antarctic ice velocity
(ALOS, Envisat,
Radarsat-2, ERS)
IPY 2007-2008
2007 2008 2009 2010 2011 2012
ERS-2
1995
2002
Envisat
2006
ERS-1
1991
1991
1st T
an
dem
2n
d T
an
dem
ER
S S
AR
Ta
nd
em
3rd
Ta
nd
em
ERS-1, ERS-2 and Envisat SAR missions
contributing to polar observations
2000
ERS-2
ice
phase
ERS-2 Ice Phase 2011:
Kangerdlugssuaq
Ice Stream
(East Greenland)
1st PSTG SAR working group meeting, 12 November 2012
Density maps
ERS-1 and ERS-2 – Descending arc, VV polarisation
ERS SAR archive:
ERS-1 (1991-2000) and ERS-2 (1995-2011)
Density maps
ERS-1 and ERS-2 – ascending arc, VV polarisation
Incidence
angle
23 deg
1st PSTG SAR working group meeting, 12 November 2012
ERS-1 SAR archive – 3 days repeat (1st ice phase 1992), Greenland ERS-1 SAR archive – 3 days repeat (1st ice phase 1992), Antarctica ERS-1 SAR archive – 3 days repeat (2nd ice phase 1994), Greenland ERS-1 SAR archive – 3 days repeat (2nd ice phase 1994), Antarctica ERS-2 SAR archive – 3 days repeat ( New Ice phase 2011), Greenland ERS-2 SAR archive – 3 days repeat ( New Ice phase 2011), Antarctica
ERS-1 and ERS-2 Ice Phases
Incidence
angle
23 deg
Tandem missions:
ERS-1/ERS-2 tandem and ERS-2/Envisat tandem
1st PSTG SAR working group meeting, 12 November 2012
Tandem ERS-1 & ERS-2, from 03/1995 to 06/1996, Greenland Tandem ERS-1 & ERS-2, from 03/1995 to 06/1996, Antarctica 1st Tandem ERS-2/Envisat from 09/2007 to 02/2008, Greenland 2nd Tandem ERS-2/Envisat from 11/2008 to 01/2009, Greenland 3rd Tandem ERS-2/Envisat, from 02/2010 to 04/2010, Antarctica
Incidence
angle
23 deg
Density maps
Wide Swath mode descending arc, VV polarisation
Envisat SAR archive:
wide swath mode
1st PSTG SAR working group meeting, 12 November 2012
Density maps
Wide Swath mode ascending arc, VV polarisation
Density maps
Wide Swath mode descending arc, HH polarisation
Density maps
Wide Swath mode ascending arc, HH polarisation
1st PSTG SAR working group meeting, 12 November 2012
Density maps
Image mode S2 descending arc, VV polarisation
Density maps
Image mode S2 ascending arc, VV polarisation
Density maps
Image mode S2 descending arc, HH polarisation
Density maps
Image mode S2 ascending arc, HH polarisation
Density maps
Image mode S6 descending arc, HH polarisation
Density maps
Image mode S6 ascending arc, HH polarisation
Envisat SAR archive:
narrow swath mode
S2
Incidence
angle
23 deg
S6
Incidence
angle
35 deg
73 ASAR Image Mode IS6 , HH
ascending segments
Greenland Campaign [08 Dec 2009 to 30 Jan 2010]
Envisat SAR archive
1st PSTG SAR working group meeting, 12 November 2012