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Crop Assessment and Forecasting using Remote Sensing

Crop Assessment and Forecasting using Remote Sensing. CAPE & FASAL-TD Project Team SPACE APPLICATIONS CENTRE (ISRO) Ahmedabad VK Dadhwal in Kharif Conference, DAC, MOA, 16 Feb 2004, Delhi. OUTLINE. Background to Remote Sensing Scope of CAPE & FASAL Approach of NWPF & past results

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Crop Assessment and Forecasting using Remote Sensing

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  1. Crop Assessment and Forecasting using Remote Sensing CAPE & FASAL-TD Project Team SPACE APPLICATIONS CENTRE (ISRO) Ahmedabad VK Dadhwal in Kharif Conference, DAC, MOA, 16 Feb 2004, Delhi

  2. OUTLINE • Background to Remote Sensing • Scope of CAPE & FASAL • Approach of NWPF & past results • Assessment status of rabi 2003-04 • Impressions on early season weather • Fog & its persistence (Dec’03, Jan’04) • Crop Change Maps : MP, Rajasthan, UP • Status rabi 2003-04 • RESOURCESAT – 1: Data & Advantages

  3. 1: SENSOR & Platform 2: ORBIT 3: GROUND TRACE & Repetivity

  4. CAPE : ACREAGE ESTIMATION SEGMENT EXTRACTION & TRAINING SITES 1 SAMPLE PLAN CLASS SEPARABILITY 2 3 AGGREGATION CROP ACREAGE 4 CLASSIFIED OUTPUT 5 SPECTRAL INDEX FOR YIELD MODEL

  5. NWPF : Objectives & Approach • Multiple pre-harvest forecast using multi-date WiFS as primary RS source and weather-yield models • National-scale forecast with state-level disaggregation • Spatio-temporal analysis of within and across season crop growth differences Multi-date hierachical crop discrimination with startified sampling approach using 15x15 km segments and 10 per cent sampling SAMPLE SEGMENT LOCATION : NWPF II STAGE STRATA A TYPE (> 70 % AG) B TYPE (30-70 % AG) C TYPE (5-30 % AG)

  6. NATIONAL WHEAT FORECASTING Previous Results

  7. Comparison of Weather Parameters 2002-03 and 2003-04

  8. IRS 1D WiFS 095 – 047 25 Dec 2003 094 – 047 28 Dec 2003 093 – 047 31 Dec 2003 093 – 048 25 Jan 2004

  9. IRS WiFS 104-056 25 Jan 2004 102-054 23 Jan 2004 102-053 102 - 52 103-053 23 Jan 2004 15 Jan 2004 20 Jan 2004

  10. G_nagar & H_garh = 0.333 Mha Sirsa = 0.089 Mha Agr. Area : Crop Change Maps : WiFS : 0304 vs 0203 : Rajasthan Change Image 21 Dec 2002 Sirsa Ganganagar & Hanumangarh 25 Dec 2003 NWPF / CMD SAC, Ahmedabad

  11. Crop Change Maps : WiFS : 0304 vs 0203 : Rajasthan No change – Crop 62.5 % Increased Crop 26.5 % Other Changes 11.0 % 15 Jan 2003 10 Jan 2004 Change Image Jaipur Sawai Madhopur Tonk Bundi Kota Agr. Area = 1.81 Mha Study Area Parts of Rajasthan

  12. CROP CROP 54.56 FALLOW CROP 43.42 CROP FALLOW 02.02 MASK MASK Crop Change Maps : WiFS : 0304 vs 0203 : W Madhya Pradesh 16 FEB 2003 O4 FEB 2004 CHANGE IMAGE 02-03 03-04 % agric NWPF / CMD SAC, Ahmedabad

  13. CROP CROP 67.22 FALLOW CROP 31.30 CROP FALLOW 01.48 MASK MASK Crop Change Maps : WiFS : 0304 vs 0203 : C Madhya Pradesh 16 FEB 2003 O4 FEB 2004 CHANGE IMAGE 02-03 03-04 % agric NWPF / CMD SAC, Ahmedabad

  14. RCA – Rabi Cropped Area-WiFS-(Study districts) Mustard – District-level-LISS-III-(Study districts) NWPF / CMD SAC, Ahmedabad

  15. NEW INDIAN SATELLITE DATA • IRS P6 – RESOURCESAT – • Launched Oct 17, ’03 • THREE SENSORS • LISS – III’ : Improved SWIR, 23m 4 bands • Advanced WiFS : 58m, 4 bands, 5 day revisit • LISS – IV : Multispectral 5.8m (23km), sampler

  16. AWiFS vs WiFS : Overall Scene Comparison WiFS, 06-DEC-2003 AWiFS, 03-DEC-2003

  17. LISS III OVER GANDHINAGAR DISTRICT NWPF / CMD SAC, Ahmedabad

  18. Some land features: LISS-III, AWiFS & WiFS LISS-III Homogeneous patches are seen, linear-small features lost Blurring and high frequency features lost AWiFS WiFS

  19. WiFS scene (31 Dec 2003) AWiFS scene (18 Dec 2003) Crop Separability : LISS-III(P6), AWiFS (P6) & WiFS (1D) A B LISS-III scene (13 Dec 2003) Transect AB shown on LISS-III scene

  20. Variation of DN (Red, NIR) and NDVI along transect AB

  21. LISS IV view of urban area : DELHI nov’04 NWPF / CMD SAC, Ahmedabad

  22. LISS IV view of agriculture NWPF / CMD SAC, Ahmedabad GANDHINAGAR DISTRICT

  23. Thank You

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