Creating NetCDF files from GOES IR imagery for TCDC analyses

1) script: ir_nrl_type_images_netcdf.scr
	-input includes a series of hourly positions (for example):
		-let lat0=13.45
		-let lon0=68.47
	-note: hh times listed are really hh45z times in the script

2) Additional cases for TCDC persistent homology analyses
	-2004 Ivan: 09 Sep 0045z - 12 Sep 0045z >> GOES-12
	-2010 Earl: 30 Aug 0045z - 31 Aug 1845z >> GOES-13

3) output files (for each hourly time):
	-filenames: yyyyjjj.hhmm.jpg & yyyyjjj.hhmm.nc
	-.jpg: 2km IR image (750x750 pixels)
	-.nc: NetCDF file over the image domain
		-note NetCDF are output as 0-255 brightness temperatures
	-0445z & 0545z files are missing due to the GOES satellite eclipse period 
	-each storm folder includes an hourly track text file with storm positions

4) Converting NetCDF BT to IR cloud top temperature (C)
	 if B≥176
  	  then
	   T = 418 - B - 273.15
	 elseif B≤176
  	  then
           T = 330 - (B / 2) - 273.15