ICOADS_prep. R not very fruitful; using imma.pl (perl script) instead to extract relevant data. .pl finds SST data btw 40S-40N and writes to new file tropical.imma (maybe change extension to .csv or .txt). need to add loop to run through all data files.
IMMA perl scripts added. HadCRUT running EOF script added
ICOADS_data for ENSO recon using ICOADS gridded dataset
ICOADS_ncdf used for creating fixed netCDF file. _runningDataCov for making gif of data coverage over time