NASA MODIS and VIIRS Burned Area Products Update
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1 NASA MODIS and VIIRS Burned Area Products Update Louis Giglio, Luigi Michael Humber, William Walsh, David Roy, Christopher JusIce GOFC Fire Implementa0on Team Mee0ng November 2016
2 MODIS Burned Area Products MODIS CollecIons 5 and 5.1 MCD45A1 MCD45A1- based GIS Products (SCF) MCD64A1 (SCF) 500- m Monthly Shapefiles m GeoTIFF 500- m Monthly MODIS CollecIon 6 MCD64A1 MCD64A1- based GIS Products (SCF) MCD64CMQ (SCF) MCD64CDQ (SCF) 500- m Monthly Shapefiles m GeoTIFF 0.25 Monthly 0.25 Daily
3 MODIS C6 BA Product Status C6 MCD64A1 operaional producion began five days ago Public release January 2017
4 July 2002 MCD64A1 Global Browse h[p://landweb.nascom.nasa.gov/cgi- bin/browse/browsemodis.cgi
5 December 2003 MCD64A1 Global Browse h[p://landweb.nascom.nasa.gov/cgi- bin/browse/browsemodis.cgi
6 C6 MCD64A1 Improvements C6 input data 10- day 8- day averaging window Final contextual relabeling phase now guided by neighbor staisics derived from training sample used for spectral classificaion True small burns much less likely to be discarded No region growing in cropland Many smaller tweaks and refinements
7 DAILY SURFACE REFLECTANCE! DAILY ACTIVE FIRE MASKS! C6 MCD64 Algorithm TEMPORAL COMPOSITES ΔVI*, VI* post S*, t*, t f IQR* pre, IQR* post change summaries TEMPORAL TEXTURE! TRAINING MASK primary role of acive fire map CONDITIONAL PDFs SPATIAL PRIORS p(n b N B) LAND COVER INITIAL CLASSIFICATION CONTEXTUAL FILTER BURN MAP
8 MODIS C6 Burned Area Early Results Overall increase in burned area ~25% globally
9
10 MCD64A Regional 2007 Burned Area Totals ( 10 4 km 2 = Mha)" " Region C5.1 C6! Global %" Boreal North America %" Temperate North America %" Central America %" NH South America %" SH South America %" Europe %" Middle East %" NH Africa %" SH Africa %" Boreal Asia %" Central Asia %" Southeast Asia %" Equatorial Asia %" Australia and NZ %" 10
11 MCD64A Regional 2002 Burned Area Totals ( 10 4 km 2 = Mha)" " Region C5.1 C6! Global %" Boreal North America %" Temperate North America %" Central America %" NH South America %" SH South America %" Europe %" Middle East %" NH Africa %" SH Africa %" Boreal Asia %" Central Asia %" Southeast Asia %" Equatorial Asia %" Australia and NZ %" 11
12 MCD64A Annual Area Burned 12
13 MODIS C6 Burned Area Early Results Overall increase in burned area ~25% globally Small burns no longer blindly eliminated
14 September 2002, MODIS Ile h13v09 (eastern Brazil) C5.1 MCD64A1 C6 MCD64A1 (4 increase)
15 MODIS C6 Burned Area Early Results Overall increase in burned area ~25% globally Small burns no longer blindly eliminated Improved (i.e., smaller) temporal uncertainty
16 Temporal Uncertainty (Global, 2006)
17 MODIS C6 Burned Area Early Results Overall increase in burned area ~25% globally Small burns no longer blindly eliminated Improved (i.e., smaller) temporal uncertainty Mapping of cropland burning somewhat cosme=cally improved Timing can sill be off due to confusion with harvest
18 AcIve Fire Burned Area
19 Quality/consistency of cropland BA mapping can sill be very poor, however. Here s an example where the C6 product is no be[er than C5, and probably even worse.
20 April 2002, MODIS Ile h20v11 (southern Africa) Philip! C5.1 MCD64A1 C6 MCD64A1
21 MODIS CollecIon 6/VIIRS ValidaIon Landsat- 8 imagery CEOS burned area validaion protocol Image- pair interpretaion Cloud free + within a set Ime period (~2 months) Widely tested and used in peer reviewed literature CEOS Stage 3 Product accuracy has been assessed, and the uncertainies in the product well established via independent measurements made in a systemaic and staisically robust way that represents global condiions.
22 Mali C5.1
23 Mali C6
24 VIIRS Burned Area Product Status Adapt MCD64 producion code to use VIIRS data 750- m versus 375- m bands Retain 500- m grid for MODIS compaibility
25 VIIRS Burned Area Products VIIRS CollecIon 1 VNP64A1 VNP64A1- based GIS Products (SCF) VNP64CMQ (SCF) VNP64CDQ (SCF) 500- m Monthly Shapefiles m GeoTIFF 0.25 Monthly 0.25 Daily March 2017 release significantly behind schedule due to input- data implementaion delays.
26 MODIS VIIRS VNP64A1 Prototype VIIRS* *1- km NPP_DSRFIP_L3 daily surface reflectance product used as stand- in for 500- m VIIRS daily surface reflectance.
27
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