Performance of Global Soil Moisture Products in Crop Growing Region of Central India
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Performance of Global Soil Moisture Products in Crop Growing Region of Central India Sitiraju Srinivasa Rao 1 & Dinesh Kumar Sahadevan 1 & Milind R. Wadodkar 2 & M/ S. S. Nagaraju 3 & Sudipta Chattaraj 3 & William Joseph 4 & Prasanth Rajankar 5 & Titu Sengupta 5 & M. V. Venugopalan 6 & Subrata N. Das 2 & Asok Kumar Joshi 2 & Jaswanth Raj Sharma 1 & Eadara Amminedu 7
Received: 24 March 2015 / Accepted: 21 August 2015 # Indian Society of Remote Sensing 2016
Abstract The study was carried out to evaluate the global soil moisture product of Advanced Microwave Scanning Radiometer-2 (AMSR-2), Advanced Microwave Scanning Radiometer–Earth Observing System (AMSR-E), Soil Moisture and Ocean Salinity (SMOS) and Tropical Rainfall Measuring Mission’s (TRMM) Microwave Imager (TMI) in central region of India for monsoon period of 2011 and 2013. The evaluation was done using 100, 75 in-situ soil moisture measurements of 2011, 2013 respectively. The in-situ measurements were spread across ~10,000 sq.km area which is roughly equal to 12 pixels of SMOS, AMSR-2 AMSR-E and TMI data. The result shows reasonable correlation of r2 = 0.506, 0.467 between SMOS and in-situ soil moisture for 2011, 2013 respectively. TMI exhibits good correlation of r2 =0.55 in 2013 but failed to do the same in 2011. AMSR-2 soil moisture products shows moderate correlation r2 =0.32 in 2011 but poorly correlated in 2013.
* Dinesh Kumar Sahadevan [email protected] 1
Regional Centre, National Remote Sensing Centre, Balanagar, Hyderabad, India 500037
2
Regional Remote Sensing Centre-Central, Amravati Road, Nagpur, India 440 010
3
National Bureau of Soil Survey & Land Use Planning, Nagpur, India 440 033
4
Soil and Land Use Survey of India, Nagpur, India 440 0130
5
Maharashtra Remote Sensing Applications Centre, Nagpur, India 440 011
6
Central Institute of Cotton Research, Nagpur, India 440 010
7
Department of Geo Enng, AU College of Engg, Visakhapatnam, India 530 003
Keywords SMOS . AMSR-2 . AMRS-E . TMI . Soil Moisture validation
Introduction Soil moisture measurement is an important parameter in many fields including irrigation management for crops, soil erosion studies, land-surface–atmosphere interaction scenarios, meteorological forecast. Evaporation, infiltration and runoff are driven by surface soil moisture, while soil moisture in the root zone governs the rate of water uptake by vegetation. Thus soil moisture is key variable in the hydrologic cycle (Kerr et al. 2001). Soil moisture products are very much useful in estimates of crop production, drought forecasting. These products are available from the space platform such as AMSR-E, AMSR-2, TMI and SMOS for various time periods. However performance of soil moisture products in crop growing is uncertain. In this paper soil moisture products are evaluated in crop growing, drought prone Vidarbha region using ground soil moisture measurements. AMSR-E was launched in 2002 with the collaboration of National Aeronautics and Space Administration (NASA) and Japan Aerospace Expl
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