deletions | additions       diff --git a/TRMM Satellite Lightning Detection compared to Ground-based lightning detection.tex b/TRMM Satellite Lightning Detection compared to Ground-based lightning detection.tex  index 0b82d94..5067565 100644  --- a/TRMM Satellite Lightning Detection compared to Ground-based lightning detection.tex  +++ b/TRMM Satellite Lightning Detection compared to Ground-based lightning detection.tex 
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Of concern is the spatial distributions of IC strokes, compared to CG or GC strokes over Australia. Lightning detected from the Lightning Image Sensor (LIS) on the TRMM polar orbiting satellite is considered very accurate in detecting total lightning (Cummins and Murphy 2009). GPATS CG/GC stroke locations have been compared to LIS total stroke locations for 4 summer and 4 winter days within the 2008-2014 period, chosen by visual inspection of global TRMM LIS lightning strike location images (http://thunder.nsstc.nasa.gov/lisib/lisbrowsecal.pl?which=qc).  \textbf{(para re LIS VIEWTIMES and GPATS selection per viewtime space/time window)} \begin{itemize}  \item TRMM LIS data includes VIEWTIMES - CCD pixels view the earth in 0.5degree boxes over a time period ranging from 2-20 seconds. THe VIEWTIMES dataset per orbit contains lat and lon centre of 0.5degree box, start and end observing time  \item TRMM LIS data includes EVENTS, GROUPS and FLASHES.   \item EVENTS are illumunated CCD pixels, time lat lon radiance  \item GROUPS are groups of EVENTS. Group is defined as spatially adjacent EVENTS within a 2ms time window (\textbf{CHECK THIS}). closest to strokes  \item FLASH - groups of GROUPS adjacent over 5.5 km area and 330ms time window, statistically weighted (\textbf{get details}). FLASHES can contain many groups or strokes over a very short time and are closest to the lightning flash at the thunderstorm scale. Too course spatially and temporally for GPATS stroke comparison.   \end{itemize}