Remote sensing data - Revision history

Wbuytaert at 11:10, 30 March 2009

2009-03-30T11:10:31Z

Wbuytaert at 10:46, 5 February 2009

2009-02-05T10:46:11Z

Wbuytaert at 10:45, 5 February 2009

2009-02-05T10:45:37Z

Wbuytaert at 11:34, 22 July 2008

2008-07-22T11:34:44Z

Wbuytaert at 11:28, 22 July 2008

2008-07-22T11:28:44Z

Wbuytaert at 12:53, 16 July 2008

2008-07-16T12:53:40Z

Wbuytaert at 11:50, 16 July 2008

2008-07-16T11:50:30Z

Wbuytaert at 11:49, 16 July 2008

2008-07-16T11:49:28Z

Wbuytaert at 11:28, 16 July 2008

2008-07-16T11:28:49Z

Wbuytaert at 13:26, 2 July 2008

2008-07-02T13:26:49Z

@@ Line 30: / Line 30: @@
 |-
 |Eumetsat||METOP||AVHRR||?||||||cloud cover, surface temperature
 |-
 |ESA||MSG-1 & 2 (Meteosat-8 & 9)||SEVIRI||12||2002||||Spinning Enhanced Visible and Infrared Imager. [[http://www.eumetsat.int/Home/Main/Access_to_Data/Meteosat_Image_Services/SP_1123237865326 Africa and Europe]] @ 15 minutes. 8 channels can be used for monitoring the earth surface. Channel 12 is a high resolution visible (hrv) channel. Resolution: 3 km at the sub-satellite point (5 – 6 km over Europe). Channel 12 has a resolution of 1 km at the sub-satellite point (1.5 – 2 km over Europe). Can be used for precipitation (see e.g. Thies et al. doi:10.1029/2008JD010464)
 |-
 |NASA||TRMM||??||||||25x25km (0.25°)|| rainfall
 |-
 |NASA||TERRA||ASTER||[http://en.wikipedia.org/wiki/Advanced_Spaceborne_Thermal_Emission_and_Reflection_Radiometer 15]||1999||15-90m||temperature, reflectance, elevation, land use. On demand; some images exist for the Andes

@@ Line 33: / Line 33: @@
 |NASA||EOS AQUA ||AMSR-E  ||||||||??
 |-
-|ESA||MSG-1 & 2 (Meteosat-8 & 9)||SEVIRI||12||2002||||Spinning Enhanced Visible and Infrared Imager. [[http://www.eumetsat.int/Home/Main/Access_to_Data/Meteosat_Image_Services/SP_1123237865326 Africa and Europe]] @ 15 minutes. 8 channels can be used for monitoring the earth surface. Channel 12 is a high resolution visible (hrv) channel. Resolution: 3 km at the sub-satellite point (5 – 6 km over Europe). Channel 12 has a resolution of 1 km at the sub-satellite point (1.5 – 2 km over Europe). Can be used for precipitation (see e.g. Thiess et al. doi:10.1029/2008JD010464)
+|ESA||MSG-1 & 2 (Meteosat-8 & 9)||SEVIRI||12||2002||||Spinning Enhanced Visible and Infrared Imager. [[http://www.eumetsat.int/Home/Main/Access_to_Data/Meteosat_Image_Services/SP_1123237865326 Africa and Europe]] @ 15 minutes. 8 channels can be used for monitoring the earth surface. Channel 12 is a high resolution visible (hrv) channel. Resolution: 3 km at the sub-satellite point (5 – 6 km over Europe). Channel 12 has a resolution of 1 km at the sub-satellite point (1.5 – 2 km over Europe). Can be used for precipitation (see e.g. Thies et al. doi:10.1029/2008JD010464)
 |-
 |NASA||TRMM||??||||||25x25km (0.25°)|| rainfall

@@ Line 33: / Line 33: @@
 |NASA||EOS AQUA ||AMSR-E  ||||||||??
 |-
-|ESA||MSG-1 (Meteosat-8)||SEVIRI||12||2002||||Spinning Enhanced Visible and Infrared Imager. Entire earth disk @ 15 minutes. 8 channels can be used for monitoring the earth surface. Channel 12 is a high resolution visible (hrv) channel. Resolution: 3 km at the sub-satellite point (5 – 6 km over Europe). Channel 12 has a resolution of 1 km at the sub-satellite point (1.5 – 2 km over Europe).
+|ESA||MSG-1 & 2 (Meteosat-8 & 9)||SEVIRI||12||2002||||Spinning Enhanced Visible and Infrared Imager. [[http://www.eumetsat.int/Home/Main/Access_to_Data/Meteosat_Image_Services/SP_1123237865326 Africa and Europe]] @ 15 minutes. 8 channels can be used for monitoring the earth surface. Channel 12 is a high resolution visible (hrv) channel. Resolution: 3 km at the sub-satellite point (5 – 6 km over Europe). Channel 12 has a resolution of 1 km at the sub-satellite point (1.5 – 2 km over Europe). Can be used for precipitation (see e.g. Thiess et al. doi:10.1029/2008JD010464)
 |-
 |NASA||TRMM||??||||||25x25km (0.25°)|| rainfall
 |-
-|NASA||ASTER||??||||||||temperature, reflectance, elevation. On demand, and does not seem to exist for the tropical Andes
+|NASA||TERRA||ASTER||[http://en.wikipedia.org/wiki/Advanced_Spaceborne_Thermal_Emission_and_Reflection_Radiometer 15]||1999||15-90m||temperature, reflectance, elevation, land use. On demand; some images exist for the Andes
 |-
 |NASA||TERRA/AQUA||[http://en.wikipedia.org/wiki/MODIS MODIS]||36||1999/2002||see notes||http://www.landcover.org, spatial resolution: 250 m (bands 1-2) 500 m (bands 3-7) 1000 m (bands 8-36), temporal resolution 1 to 2 days, visible and near infrared (400 to 14400 nm)

@@ Line 130: / Line 130: @@
-== Envisat Altimeter ==
+== Processing ==
 Some information that may make life easier when dealing with ESA's altimeter N1 files:
@@ Line 159: / Line 161: @@
       FIELD_TITLE=alt_cog_ellip
-- Extracting many fields from many files is '''much''' easier using the command line tools and a batch script.
+* Extracting many fields from many files is '''much''' easier using the command line tools and a batch script.
 == downscaling techniques ==

← Older revision		Revision as of 11:28, 22 July 2008
Line 132:		Line 132:
	== Envisat Altimeter ==		== Envisat Altimeter ==

		+	Some information that may make life easier when dealing with ESA's altimeter N1 files:

		+	* ESA's [http://earth.esa.int/brat/html/data/toolbox_en.html Basic Radar Altimeter Toolbox] provides a set of tools and an interface for extracting data from the original N1 files. The interface is broken on recent linux versions due to obsolete dependencies but the command line tools work.
		+
		+	* The XY extraction utility (BratCreateZFXY) does not seem capable of extracting the original data directly. It requires a predefined raster size and automatically interpolates before exporting.
		+
		+	* BratCreateYFX extracts the measurements in the original resolution. However it only includes one dimension so you have to add the other one manually as a dataset. Something like this in the parameter file:
		+
		+	# longitude
		+	X=lon
		+	X_NAME=X
		+	X_TYPE=Longitude
		+	X_UNIT=degrees_east
		+	X_TITLE=X
		+	# latitude
		+	FIELD=lat
		+	FIELD_NAME=Y
		+	FIELD_TYPE=Data
		+	FIELD_UNIT=count
		+	FIELD_TITLE=Y
		+	# data of interest follow
		+	FIELD=alt_cog_ellip
		+	FIELD_NAME=alt_cog_ellip
		+	FIELD_TYPE=Data
		+	FIELD_UNIT=mm
		+	FIELD_TITLE=alt_cog_ellip
		+
		+	- Extracting many fields from many files is '''much''' easier using the command line tools and a batch script.

	== downscaling techniques ==		== downscaling techniques ==

@@ Line 3: / Line 3: @@
 == Overview of remote sensing data that may be useful for hydrological analysis ==
 {|border = "1"
 !Institute!!Satellite!!Sensor!!channels!!launched!!resolution!!Notes
 |-
 |ESA ||[http://en.wikipedia.org/wiki/Envisat ENVISAT]  ||MERIS   ||15||March 2002||260x290m||Visible and Near Infrared spectrum (390 to 1040 nm), cloud cover, water bodies, frequency 3 days (higher at the poles)
@@ Line 43: / Line 41: @@
 |NASA||TERRA/AQUA||[http://en.wikipedia.org/wiki/MODIS MODIS]||36||1999/2002||see notes||http://www.landcover.org, spatial resolution: 250 m (bands 1-2) 500 m (bands 3-7) 1000 m (bands 8-36), temporal resolution 1 to 2 days, visible and near infrared (400 to 14400 nm)
 |}
 One that has not gone up yet: [http://bprc.osu.edu/water/index.php SWOT]

@@ Line 84: / Line 84: @@
 {|border=1
 !Channel!!min!!max!!description
 |-
 | 1 || 0.635 || 0.56 || 0.71 visual
 |-

@@ Line 4: / Line 4: @@
 == Overview of remote sensing data that may be useful for hydrological analysis ==
-{!class="wikitable"
+{|border = "1"
 !Institute!!Satellite!!Sensor!!channels!!launched!!resolution!!Notes
 |-
-|ESA ||[http://en.wikipedia.org/wiki/Envisat ENVISAT]  ||ASAR    ||||March 2002||||APG HH and HV -> delineation of water bodies
+|ESA ||[http://en.wikipedia.org/wiki/Envisat ENVISAT]  ||ASAR    ||30m||March 2002||||APG HH and HV -> delineation of water bodies
 |-
-|ESA ||[http://en.wikipedia.org/wiki/Envisat ENVISAT]  ||Altimeter||||March 2002||||altitude (only 1 dimension)
+|ESA ||[http://en.wikipedia.org/wiki/Envisat ENVISAT]  ||Altimeter||400m||March 2002||||altitude (only 1 dimension)
 |-
 |ESA ||[http://en.wikipedia.org/wiki/Envisat ENVISAT]  ||MERIS   ||15||March 2002||260x290m||Visible and Near Infrared spectrum (390 to 1040 nm), cloud cover, water bodies, frequency 3 days (higher at the poles)
 |-
-|NASA||TIROS-N||AVHRR||4||||||| colspan="2"| http://www.nsof.class.noaa.gov, cloud cover, surface temperature
+|NASA
 |-
-|NOAA||NOAA-7||AVHRR||5|||||
+|NOAA||NOAA-7||AVHRR||5||         ||
 |-
-|NOAA||NOAA-15||AVHRR||6||May 1998||||http://www.nsof.class.noaa.gov, cloud cover, surface temperature
+|NOAA||NOAA-15||AVHRR||6||May 1998||
 |-
-|NOAA||NOAA-16||AVHRR||6||Sep 2000||||
+|NOAA||NOAA-16||AVHRR||6||Sep 2000||
 |-
-|NOAA||NOAA-17||AVHRR||6||Jun 2002||||
+|NOAA||NOAA-17||AVHRR||6||Jun 2002||
 |-
-|NOAA||NOAA-18||AVHRR||6||May 2005||||
+|NOAA||NOAA-18||AVHRR||6||May 2005||
 |-
 |Eumetsat||METOP||AVHRR||?||||||cloud cover, surface temperature
@@ Line 78: / Line 84: @@
 {|border=1
 !Channel!!min!!max!!description
 |-
 | 1 || 0.635 || 0.56 || 0.71 visual
 |-

@@ Line 37: / Line 37: @@
 |NASA||TERRA/AQUA||[http://en.wikipedia.org/wiki/MODIS MODIS]||36||1999/2002||see notes||http://www.landcover.org, spatial resolution: 250 m (bands 1-2) 500 m (bands 3-7) 1000 m (bands 8-36), temporal resolution 1 to 2 days, visible and near infrared (400 to 14400 nm)
 |}
 == Data aquisition ==