Citation:

rs10040551

Name: Normalized C-HH backscatter from Sentinel-1 (December, 2014-2017) for selected tundra regions
Published: 2019-01-04
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Cryosphere

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Abstract:

Synthetic aperture radar (SAR) applications often require normalization to a common incidence angle. Angular signatures of radar backscatter depend on surface roughness and vegetation cover, and thus differ, from location to location. Comprehensive reference datasets are therefore required in heterogeneous landscapes. Multiple acquisitions from overlapping orbits with sufficient incidence angle range are processed in order to obtain parameters of the location specific normalization function. We propose a simpler method for C-band data, using single scenes only. It requires stable dielectric properties (no variations of liquid water content). This method is therefore applicable for frozen conditions. Winter C-band data have been shown of high value for a number of applications in high latitudes before. In this paper we explore the relationship of incidence angle and Sentinel-1 backscatter across the tundra to boreal transition zone. A linear relationship (coefficient of determination R2 = 0.64) can be found between backscatter and incidence angle dependence (slope of normalization function) as determined by multiple acquisitions on a pixel by pixel basis for typical land cover classes in these regions. This allows a simplified normalization and thus reduced processing effort for applications over larger areas.

The following regions are covered in the dataset: Yamal peninsula (Russia), Usa Basin (Russia), Lena Delta (Russia), Mackenzie Delta (Canada), Barrow, Toolik and Teshekpuk Lake region (Alaska).

Keyword(s):

Cryosphere

Related to:

Bartsch, Annett; Widhalm, Barbara; Pointner, Georg (2019): Vegetation height derived from Sentinel-1 and Sentinel-2 satellite data (2015-2018) for tundra regions. Zentralanstalt für Meteorologie und Geodynamik, Wien, PANGAEA, https://doi.org/10.1594/PANGAEA.897045

Further details:

Product documentation: C-HH backscatter

Project(s):

ESA Data User Element - GlobPermafrost (ESA-DUE-GlobPermafrost)

Permafrost Research (Periglacial Dynamics) @ AWI (AWI_PerDyn)

Coverage:

Median Latitude: 69.745714 * Median Longitude: 158.167143 * South-bound Latitude: 66.900000 * West-bound Longitude: 60.900000 * North-bound Latitude: 72.840000 * East-bound Longitude: -134.040000

Event(s):

C01_Barrow * Latitude: 70.990000 * Longitude: -156.600000 * Method/Device: Monitoring (MON)

C02_Toolik * Latitude: 68.700000 * Longitude: -149.200000 * Location: Alaska, USA * Method/Device: Monitoring (MON)

C03_Teshekpuk * Latitude: 70.130000 * Longitude: -153.230000 * Method/Device: Monitoring (MON)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator
1	Event label	Event		Widhalm, Barbara
2	File content	Content		Widhalm, Barbara
3	File name	File name		Widhalm, Barbara
4	File format	File format		Widhalm, Barbara
5	File size	File size	kByte	Widhalm, Barbara
6	Uniform resource locator/link to file	URL file		Widhalm, Barbara

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Size:

40 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Content	3 File name	4 File format	5 File size [kByte]	6 URL file
	Product description	ESA_GlobPermafrost_PD_LCP_LANDB_20181229_v1	PDF	578.935	ESA_GlobPermafrost_PD_LCP_LANDB_20190107_v1_1.pdf
T01_Westsiberia	C-HH backscatter, T01 transect, Westsiberia	ZAM_LCP_LANDB_SENT1_V01_20161201_20161231_T01	TIF	1523400.274	ZAM_LCP_LANDB_SENT1_V01_20161201_20161231_T01.tif
C01_Barrow	C-HH backscatter, Barrow, Alaska	ZAM_LCP_LANDB_SENT1_V01_20151202_20161231_C01	TIF	170796.546	ZAM_LCP_LANDB_SENT1_V01_20151202_20161231_C01.tif
C02_Toolik	C-HH backscatter, Toolik, Alaska	ZAM_LCP_LANDB_SENT1_V01_20151202_20161231_C02	TIF	38406.362	ZAM_LCP_LANDB_SENT1_V01_20151202_20161231_C02.tif
C03_Teshekpuk	C-HH backscatter, Teshekpuk, Alaska	ZAM_LCP_LANDB_SENT1_V01_20151202_20161231_C03	TIF	137124.326	ZAM_LCP_LANDB_SENT1_V01_20151202_20161231_C03.tif
C04_Mackenzie_Delta	C-HH backscatter, Mackenzie Delta (Canada)	ZAM_LCP_LANDB_SENT1_V01_20161201_20171229_C04	TIF	1305793.214	ZAM_LCP_LANDB_SENT1_V01_20161201_20171229_C04.tif
C07_Lena_Delta	C-HH backscatter, Lena Delta (Russia)	ZAM_LCP_LANDB_SENT1_V01_20141203_20161226_C07	TIF	278790.542	ZAM_LCP_LANDB_SENT1_V01_20141203_20161226_C07.tif
C14_UsaBasin	C-HH backscatter, Usa Basin	ZAM_LCP_LANDB_SENT1_V01_20151202_20161230_C14	TIF	758971.907	ZAM_LCP_LANDB_SENT1_V01_20151202_20161230_C14.tif