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Operational 500 m surface soil moisture product using EOS-04 C-band SAR over Indian agricultural croplands


Affiliations
1 Space Applications Centre, Indian Space Research Organisation (ISRO), Ahmedabad 380 015, India; Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi 221 005, India
2 Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi 221 005, India
3 Anand Agriculture University, Anand 388 110, India
4 Punjab Remote Sensing Centre, Ludhiana 141 004, India
5 Haryana Space Applications Centre, Hisar 125 004, India
6 Indian Institute of Technology, Kanpur 208 016, India
7 Indian Institute of Science, Bengaluru 560 012, India
8 Space Applications Centre, Indian Space Research Organisation (ISRO), Ahmedabad 380 015, India

Surface soil moisture (SSM) at high spatial resolution is an essential land parameter for agricultural applications like irrigation mapping, scheduling, crop water stress assessment, etc. However, available satellite derived soil moisture products are inadequate for meeting the requirements of agricultural applications due to coarse scale soil moisture (~10–40 km). In this article, we developed an operational framework for first of its kind sub-km (~500 m) operational soil moisture product over India by utilizing ISRO’s EOS-04 C-band synthetic aperture radar (SAR) data based on active-passive approach. The potential of EOS-04 SAR for sub-km scale is demonstrated and tested over major cropland sites covering highly heterogeneous and dynamic crop conditions in different agro-climatic regions over India which shows a good agreement with in situ datasets with mean ubRMSE, ranging from 0.051 to 0.078 m3/m3

Keywords

Active-passive, agricultural applications, EOS-04 SAR, soil moisture active and passive, surface soil moisture.
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  • Operational 500 m surface soil moisture product using EOS-04 C-band SAR over Indian agricultural croplands

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Authors

Dharmendra Kumar Pandey
Space Applications Centre, Indian Space Research Organisation (ISRO), Ahmedabad 380 015, India; Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi 221 005, India
Prashant Kumar Srivastava
Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi 221 005, India
Rucha Dave
Anand Agriculture University, Anand 388 110, India
Raj K. Setia
Punjab Remote Sensing Centre, Ludhiana 141 004, India
Ompal
Haryana Space Applications Centre, Hisar 125 004, India
Rajiv Sinha
Indian Institute of Technology, Kanpur 208 016, India
Muddu Sekhar
Indian Institute of Science, Bengaluru 560 012, India
Manish Parmar
Space Applications Centre, Indian Space Research Organisation (ISRO), Ahmedabad 380 015, India
Shubham Gupta
Space Applications Centre, Indian Space Research Organisation (ISRO), Ahmedabad 380 015, India
Deepak Putrevu
Space Applications Centre, Indian Space Research Organisation (ISRO), Ahmedabad 380 015, India
Raghav Mehra
Space Applications Centre, Indian Space Research Organisation (ISRO), Ahmedabad 380 015, India
V. Ramanujam
Space Applications Centre, Indian Space Research Organisation (ISRO), Ahmedabad 380 015, India
Bimal Kumar Bhattacharya
Space Applications Centre, Indian Space Research Organisation (ISRO), Ahmedabad 380 015, India
Raj Kumar
Space Applications Centre, Indian Space Research Organisation (ISRO), Ahmedabad 380 015, India

Abstract


Surface soil moisture (SSM) at high spatial resolution is an essential land parameter for agricultural applications like irrigation mapping, scheduling, crop water stress assessment, etc. However, available satellite derived soil moisture products are inadequate for meeting the requirements of agricultural applications due to coarse scale soil moisture (~10–40 km). In this article, we developed an operational framework for first of its kind sub-km (~500 m) operational soil moisture product over India by utilizing ISRO’s EOS-04 C-band synthetic aperture radar (SAR) data based on active-passive approach. The potential of EOS-04 SAR for sub-km scale is demonstrated and tested over major cropland sites covering highly heterogeneous and dynamic crop conditions in different agro-climatic regions over India which shows a good agreement with in situ datasets with mean ubRMSE, ranging from 0.051 to 0.078 m3/m3

Keywords


Active-passive, agricultural applications, EOS-04 SAR, soil moisture active and passive, surface soil moisture.



DOI: https://doi.org/10.18520/cs%2Fv126%2Fi9%2F1061-1068