Terrain Correction for Slide Fire in Arizona
Background information and observations regarding the implementation of Terrain Correction for the Slide Fire in Arizona using DNB and thermal observations. Conclusions and future considerations for analysis presented.
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Presentation Transcript
DNB Terrain Correction Slide Fire, AZ William Straka III 1 1
Background IDPS Mx8.4 was implemented on 22 May, 2014 starting with the ~14:40 GMT observation time. One of the key features is Terrain Correction is implemented for the Day Night Band The TC latitude/longitudes are variables in the GDNBO files and not a separate file. This means thermal, NIR and DNB emissive sources should now match up in all regions NDE provided test case over Iceland as so users could adjust their scripts/code accordingly. We wish to acknowledge their help in this The nightly McIDAS-V was ready as soon as the TC navigation was available within the GDNBO files
Test case Test case is the Slide Fire in Arizona Night time case from 0933Z on 23 May 2014 was used Arrow is located at roughly the center of the hot spot from the M13 band (terrain corrected) and in the same place for all images Slides 8-9 have animations, so use slide show
23 May2014, 0933Z M13 3.9 m Slide
23 May2014, 0933Z M10 1.6 m
23 May2014, 0933Z DNB NonTC
23 May2014, 0933Z DNB Terrain Corrected
23 May2014, 0933Z DNB non-TC, M10, M13
23 May2014, 0933Z DNB_TC, M10, M13
Observations While test scene is cloud covered, the location of Slide Fire is clearly shifted from the M10 and M13, both which are terrain corrected, hot spots The terrain corrected DNB geolocation shifts the fire inline with the hot spots indicated in the M10 and M13 band data
Conclusions While test case was clouded over, it appears that the Terrain Corrected navigation correctly shifts fires in-line with thermal observations. Because it likely the Slide Fire will be burning for a few more days, hopefully it will be cloud free for better comparisons McIDAS-V 1.5 beta appears to correctly use the terrain corrected navigation, if it is available. In addition it is backward compatible to data without the TC navigation.
