Identification

Title

Radar derived seasonal surface water maps for three Indian districts (Shivamogga, Sindhudurg, Wayanad), 2017-2018

Abstract

[This dataset is embargoed until December 31, 2022]. Data provided are monthly surface water layers extracted from Sentinel1A SAR data for 3 districts in India (Shivamogga, Sindhudurg, Wayanad) for the year 2017 and 2018. Surface water body layers were mapped using an average monthly threshold value extracted from the image backscatter histogram. The average threshold value excluded the monsoon months due to the difference in water and not water area. The threshold value was slightly lesser than the mean threshold value. The end product was validated using field data which resulted in user and producer accuracies. Monthly surface water body layers were not produced for a few months due to the non-availability of Sentinel 1 data. The work was supported by MRC, AHRC, BBSRC, ESRC and NERC [grant number MR/P024335/1] and NERC - SUNRISE project [grant number NE/R000131/1] Full details about this dataset can be found at https://doi.org/10.5285/3c23fea1-5b27-4b01-b9ef-fc13346cfedc

Resource type

dataset

Resource locator

Unique resource identifier

code

https://catalogue.ceh.ac.uk/id/3c23fea1-5b27-4b01-b9ef-fc13346cfedc

codeSpace

doi:

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

imageryBaseMapsEarthCover

Keywords

Keyword set

keyword value

Land Cover

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

Sentinel 1

SAR

monthly

seasonal

surface water

water body

flooding

hydrology

land cover

Remote Sensing

Geographic location

West bounding longitude

75.89

East bounding longitude

74.46

North bounding latitude

14.76

South bounding latitude

13.43

Temporal reference

Temporal extent

Begin position

2017-01-01

End position

2018-12-31

Dataset reference date

date type

publication

effective date

2022-02-15

Frequency of update

Quality and validity

Lineage

Maps were generated using Sentinel1A GRD data pre-processed to backscatter images using the SNAP software. Surface water is identified by applying a water/non-water threshold on the SAR backscatter images. The resulting maps were validated against in situ reference data to produce a measure of class user’s and producer’s accuracy.

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2010-12-08

degree

explanation

Data format

name of format

TIFF

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Constraint set

Limitations on public access

If you reuse this data, you should cite: Uday, N.G. , Purse, B., Vanak, A.T., Samrat, A., Chaudhary, A., Gerard, F. (2022). Radar derived seasonal surface water maps for three Indian districts (Shivamogga, Sindhudurg, Wayanad), 2017-2018. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/3c23fea1-5b27-4b01-b9ef-fc13346cfedc

Responsible organisations

Responsible party

organisation name

Ashoka Trust for Research in Ecology and the Environment

email address

gowri.uday@atree.org

responsible party role

author

Responsible party

organisation name

UK Centre for Ecology & Hydrology

email address

enquiries@ceh.ac.uk

responsible party role

author

Responsible party

organisation name

Ashoka Trust for Research in Ecology and the Environment

email address

avanak@atree.org

responsible party role

author

Responsible party

organisation name

Ashoka Trust for Research in Ecology and the Environment

email address

abhishek.samrat@atree.org

responsible party role

author

Responsible party

organisation name

Ashoka Trust for Research in Ecology and the Environment

email address

anusha.chaudhary98@gmail.com

responsible party role

author

Responsible party

organisation name

UK Centre for Ecology & Hydrology

email address

enquiries@ceh.ac.uk

responsible party role

author

Responsible party

organisation name

Ashoka Trust for Research in Ecology and the Environment

email address

gowri.uday@atree.org

responsible party role

pointOfContact

Responsible party

organisation name

NERC EDS Environmental Information Data Centre

email address

info@eidc.ac.uk

responsible party role

custodian

Responsible party

organisation name

NERC EDS Environmental Information Data Centre

email address

info@eidc.ac.uk

responsible party role

publisher

Responsible party

organisation name

Ashoka Trust for Research in Ecology and the Environment

email address

gowri.uday@atree.org

responsible party role

owner

Responsible party

organisation name

UK Centre for Ecology & Hydrology

email address

enquiries@ceh.ac.uk

responsible party role

owner

Metadata on metadata

Metadata point of contact

organisation name

Environmental Information Data Centre

full postal address

Lancaster Environment Centre, Library Avenue, Bailrigg

Lancaster

LA1 4AP

UK

email address

info@eidc.ac.uk

responsible party role

pointOfContact

Metadata date

2022-02-16T09:57:09

Metadata language