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Create NDVI climatology from MODIS

Create NDVI climatology from MODIS. 8/30/2012. Missing pixels when re-project MODIS data to geographic grid (500m GVI). IDL> MODIS_MISSINGDATA,year =2011 % np NP_total

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Create NDVI climatology from MODIS

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  1. Create NDVI climatology from MODIS 8/30/2012

  2. Missing pixels when re-project MODIS data to geographic grid (500m GVI) . • IDL> MODIS_MISSINGDATA,year=2011 • % npNP_total • row= 1 col= 1 missing= 0.204667 29291 14311570 • row= 1 col= 2 missing= 4.97341 748269 15045395 • row= 1 col= 3 missing= 5.01937 532680 10612489 • row= 1 col= 4 missing= 0.976292 97015 9937091 • row= 1 col= 5 missing= 0.0103311 1174 11363709 • row= 1 col= 6 missing= 2.36155 555021 23502404 • row= 1 col= 7 missing= 4.14692 1278892 30839545 • row= 1 col= 8 missing= 0.354189 73383 20718573 • row= 2 col= 1 missing= 0.00000 0 400058 • row= 2 col= 2 missing= 0.00196301 456 23229602 • row= 2 col= 3 missing= 0.00219357 240 10941074 • row= 2 col= 4 missing= 0.00000 0 2561291 • row= 2 col= 5 missing= 0.000112566 30 26650963 • row= 2 col= 6 missing= 0.000589340 192 32578809 • row= 2 col= 7 missing= 0.00000 0 34412910 • row= 2 col= 8 missing= 0.000857454 43 5014849 • row= 3 col= 1 missing= -NaN 0 0 • row= 3 col= 2 missing= 0.000904469 187 20675111 • row= 3 col= 3 missing= 1.36573e-05 1 7322086 • row= 3 col= 4 missing= 0.000418962 28 6683186 • row= 3 col= 5 missing= 0.000253120 58 22914065 • row= 3 col= 6 missing= 0.00447856 1481 33068701 • row= 3 col= 7 missing= 0.00648132 1631 25164612 • row= 3 col= 8 missing= 0.000348725 3 860276 • row= 4 col= 1 missing= 0.00201402 1 49652 • row= 4 col= 2 missing= 0.00509204 249 4889985 • row= 4 col= 3 missing= 0.000495517 15 3027144 • row= 4 col= 4 missing= 0.000214664 27 12577804 • row= 4 col= 5 missing= 1.78403e-05 6 33631695 • row= 4 col= 6 missing= 0.0420167 6648 15822267 • row= 4 col= 7 missing= 0.00409002 490 11980391 • row= 4 col= 8 missing= 0.00000 0 334 row= 5 col= 1 missing= 96.6667 116 120 row= 5 col= 2 missing= 0.00000 0 15980 row= 5 col= 3 missing= 0.000115569 23 19901582 row= 5 col= 4 missing= 0.00000 0 4030417 row= 5 col= 5 missing= 0.00000 0 26942123 row= 5 col= 6 missing= 0.00000 0 1775592 row= 5 col= 7 missing= 0.000892008 58 6502182 row= 5 col= 8 missing= 0.000120827 2 1655258 row= 6 col= 1 missing= 0.00000 0 10395 row= 6 col= 2 missing= -NaN 0 0 row= 6 col= 3 missing= 0.00777902 1757 22586406 row= 6 col= 4 missing= 0.00000 0 5096785 row= 6 col= 5 missing= 0.0382155 7667 20062538 row= 6 col= 6 missing= 6.29492e-05 1 1588583 row= 6 col= 7 missing= 0.0394888 2737 6931080 row= 6 col= 8 missing= 0.0649690 3695 5687330 row= 7 col= 1 missing= -NaN 0 0 row= 7 col= 2 missing= 0.00000 0 84 row= 7 col= 3 missing= 1.99290e-05 3 15053406 row= 7 col= 4 missing= 0.0487774 23 47153 row= 7 col= 5 missing= 0.000764750 67 8761035 row= 7 col= 6 missing= 0.00000 0 320672 row= 7 col= 7 missing= 2.83683e-05 3 10575175 row= 7 col= 8 missing= 1.64331e-05 2 12170557 row= 8 col= 1 missing= 0.00000 0 1339 row= 8 col= 2 missing= -NaN 0 0 row= 8 col= 3 missing= 0.00772733 382 4943491 row= 8 col= 4 missing= 0.0162774 2 12287 row= 8 col= 5 missing= 0.00000 0 770 row= 8 col= 6 missing= 0.0189155 3 15860 row= 8 col= 7 missing= -NaN 0 0 row= 8 col= 8 missing= 0.00420512 49 1165247

  3. Compare climatology of MODIS and AVHRR AVHRR 30 years mean NDVI MODIS 10-years mean NDVI Week 26

  4. Compare climatology of MODIS and AVHRR AVHRR 30 years mean NDVI MODIS 10-years mean NDVI Week 52

  5. NDVI climatology of MODIS and AVHRR CC: 0.91 ~ 0.94 NDmodis = a + b * NDavhrr

  6. Regression between Climatology (multiple years) mean NDVI from MODIS and AVHRR • Processing: • Re-projected MODIS 250m 16 days composed NDVI to 500m Geographic grid (same as GVH) for all periods from 2002 to 2012 • Created MODIS 500m NDVI climatology from 10-years data • Aggregated MODIS 500m NDVI climatology to 4km grid (calculate mean NDVI over 64 sub grids) • Compared MODIS and AVHRR climatology: multiple years averaged NDVI (see left) NDmodis = 0.01905 + 1.753 * NDavhrr

  7. Raw NDVI MODIS vs. AVHRR AVHRR 2011, week 2 MODIS 2011, period 1

  8. Raw NDVI MODIS vs. AVHRR AVHRR 2011, week 26 MODIS 2011, period 12

  9. Raw NDVI MODIS vs. AVHRR NOAA16: NDmodis = 0.1 + 1.38 * NDavhrr

  10. NOAA18: NDmodis = 0.09 + 1.40 * NDavhrr Raw NDVI MODIS vs. AVHRR

  11. Smoothed NDVI MODIS vs. AVHRR NOAA16: NDmodis = 0.03 + 1.65 * NDavhrr

  12. NOAA18: NDmodis = 0.03 + 1.67 * NDavhrr Smoothed NDVI MODIS vs. AVHRR

  13. Apply 10% down on NDVI on AVHRR SMN? With 10% down on AVHRR SMN Without 10% down on AVHRR SMN

  14. Photo Album by guow

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