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Status for: Thermal Anomalies/Fire (MOD14)

 
General Accuracy Statement

MOD14 Fire product global sampling distribution

Fig. 1. Global distribution of approximately 2,500 Terra/ASTER
reference scenes used for the validation of the MOD14 product
(Adapted from Giglio et al., 2016).

Stage 3 validation of the Terra MODIS Collection 6 active fire detection product (MOD14) has been achieved (Giglio et al., 2016). Approximately 2,500 ASTER scenes (60×60km each) were used to assess the performance of the MOD14 product globally. An equidistant grid (900km diameter cells) was used to provide an unbiased spatial sampling of fire pixels (Figure 1). Three temporal subsets of MODIS Terra data were represented in the validation, namely: 2001-2002, 2003-2004, and 2005-2006. A similar number of ASTER scenes were used for each temporal subset providing unbiased multi-year sampling of fire pixels. Approximately 16,000 daytime and 700 nighttime MOD14 fire pixels were sampled globally. Omission errors for the Collection 6 MOD14 product is approximately 10% lower for large fires in areas with high percentage tree cover, compared to Collection 5 data (Figure 2, below left). Overall, omission errors tend to stabilize at 5% as fires grow larger in size. The Collection 6 MOD14 daytime commission errors (false alarms) were also reduced compared to Collection 5. The improvement was particularly noticeable along tropical forests characterized by high percentage tree cover (Figure 3, below right). False alarms occurring in densely vegetated areas tend to coincide with recently burned plots identified by the presence of discernable scar. Nighttime commission error was estimated to be negligible.

MOD14 omission error rates

Fig. 2: Omission error rates calculated for MOD14
Collection 5 & 6 data as a function of fire size mapped
using coincident ASTER 30 m resolution reference
fire data. Results are stratified based on percentage
tree cover (TC) data derived from MODIS Vegetation
Continuous Fields (MOD44) product (Adapted from
Giglio et al., 2016).



MOD14 False alarm rate

Fig. 3 False alarm rates calculated for MOD14
Collection 5 & 6 data as a function of percentage
tree cover data derived from MODIS Vegetation
Continuous Fields (MOD44) product. Results are
stratified based on the presence/absence of
discernable burn scars within affected pixels.
(Adapted from Giglio et al., 2016).


Validation of Fire Radiative Power (FRP) data are challenging because FRP retrieval requires unsaturated radiances, which are generally not provided by medium resolution sensors (e.g., Landsat-class data) typically used as reference data. Opportunistic validation exercises to-date have used reference validation data from the experimental small satellite, BIRD, or airborne thermal imaging systems (Dickinson et al., 2016; Schroeder et al. 2014). As a result of the limited data available, the MOD14 FRP data is currently validated at Stage 1. The top-of-atmosphere FRP data uncertainty can be relatively high (˜50%) and will vary depending on the observation conditions (e.g., fire fractional area and pixel spatial response function effects, as well as atmospheric attenuation).


Product status updated:  June 2018
Product version:  Collection 6

 
Supporting Studies:
 

Title: Measuring radiant emissions from entire prescribed fires with ground, airborne and satellite sensors — RxCADRE 2012
Author: Dickinson, M.B., Hudak, A.T., Zajkowski, T., Loudermilk, E.L., Schroeder, W., Ellison, L., Kremens, R.L., Holley, W., Martinez, O., Paxton, A., Bright, B.C., O'Brien, J.J., Hornsby, B., Ichoku, C., Faulring, J., Gerace, A., Peterson, D., and Mauceri, J.
Source: International Journal of Wildland Fire, 25, 48-61
View Summary Results From This Document
 
Title: Integrated active fire retrievals and biomass burning emissions using complementary near-coincident ground, airborne and spaceborne sensor data.
Author: Schroeder, W., Ellicott, E., Ichoku, C., Ellison, L., Dickinson, M.B., Ottmar, R.D., Clements, C., Hall, D., Ambrosia, V., & Kremens, R.
Source: Remote Sensing of Environment, 140, 719-730
View Summary Results From This Document
 
Title: ntegrated active fire retrievals and biomass burning emissions using complementary near-coincident ground, airborne and spaceborne sensor data
Author: Schroeder, W., Ellicott, E., Ichoku, C., Ellison, L., Dickinson, M.B., Ottmar, R.D., Clements, C., Hall, D., Ambrosia, V., and Kremens, R.
Source: Remote Sensing of Environment, 140, 719-730
View Summary Results From This Document
 
Title: A pragmatic assessment of the usefulness of the MODIS (Terra and Aqua) 1-km active fire (MOD14A2 and MYD14A2) products for mapping fires in the fynbos biome
Author: Helen deKlerk
Source: International Journal of Wildland Fire (2008), 17, 166-178
View Summary Results From This Document
 
Title: Detection rates of the MODIS active fire product in the United States
Author: Todd J. Hawbaker, Volker C. Radeloff, Alexandra D. Syphard, Zhiliang Zhu, Susan I. Stewart
Source: Remote Sensing of Environment 112 (2008) 2656-2664
View Summary Results From This Document
 
Title: Validation of GOES and MODIS active fire detection products using ASTER and ETM+ data
Author: Wilfrid Schroeder, Elaine Prins, Louis Giglio, Ivan Csiszar , Christopher Schmidt, Jeffrey Morisette, Douglas Morton
Source: Remote Sensing of Environment 112 (2008) 2711-2726
View Summary Results From This Document
 
Title: Validation of Active Fire Detection From Moderate-Resolution Satellite Sensors: The MODIS Example in Northern Eurasia
Author: Ivan A. Csiszar, Jeffrey T. Morisette, and Louis Giglio
Source: IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 44, NO. 7, JULY 2006
View Summary Results From This Document
 
Title: Validation of MODIS active fire detection products derived from two algorithms
Author: Jeff Morisette, Louis Giglio, Ivan Csiszar, Alberto Setzer, Wilfrid Schroeder, Douglas Morton, Chris Justice
Source: Earth Interactions, v. 9, no. 9
View Summary Results From This Document
 
Title: Validation of the MODIS active fire product over Southern Africa with ASTER data
Author: Jeff Morisette, Louis Giglio, Ivan Csiszar, Chris Justice
Source: International Journal of Remote Sensing, Vol. 26, No. 19, 10 October 2005, 4239-4264
View Summary Results From This Document
 
Title: Validation of MODIS fire product over Sumatra and Borneo using High Resolution SPOT Imagery
Author: Soo Chin Liew, Chaomin Shen, John Low, Agnes Lim, Leong Keong Kwoh
Source: Proc. 24th Asian Conference on Remote Sensing & 2003 International Symposium on Remote Sensing
View Summary Results From This Document
 
Title: Fire radiative energy for quantitative study of biomass burning: derivation from the BIRD experimental satellite and comparison to MODIS fire products
Author: Wooster, M.J., Zhukov, B., and Oertel, D.
Source: Remote Sensing of Environment, 86, Issue 1, pp. 83-107
View Summary Results From This Document
 
Title: The MODIS fire products.
Author: Justice, CO, Giglio L, Korontzi S, Owens J, Morisette JT, Roy D, Descloitres J, Alleaume S, Petitcolin F, Kaufman YJ
Source: Remote Sensing of Environment, 83, 244-262.
View Summary Results From This Document
 
Additional Validation and Product Quality
 
PI Maintained Validation Page


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Curator: Jaime Nickeson
NASA Official: Miguel Román
Last Updated: July 24, 2018
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