sea_surface_temperature_10years

An interactive map representing the sea surface temperature of 2005-2015

Approach:

• Downloading data from NOAA for 10 years i.e., 2005-2015

• Setting up all libraries and utilities

• Clipping the downloaded tiff files to responsible latitudes and longitudes

  parallel rio clip {} clip/{/} --bounds -180.0 -70.0 180.0 70.0 ::: global/*.tif

• Changing the projection to web mercator projection

  parallel gdalwarp {} mercator/{/} -t_srs EPSG:3857 -co COMPRESS=DEFLATE -r bilinear -ts 2048 1138 ::: clip/*.tif

• Selected the following colour composite for the visualization

#f5f5f5,#E59D73,#0089BA,#007270,#EE0000,#0D8977,#2F9F78,#54B575,#7DCA6E,#ABDD65,#DEEE5F

The above color composite is applied in the pre-exising code lil code and save it as a text file (python make_color.py > color_ramp.txt).

• Colorize the tiff files

  parallel gdaldem color-relief {} color-ramp.txt color/{/} ::: mercator/*.tif

• Converting tiff to png

  parallel rio convert {} pngs/{/.}.png --format PNG ::: color/*.tif

• Animate png files using ffmpeg library

• Providing Interactivity to map using mapbox GL JS following this script

Outcome:

• Interactive map representing SST from 2005-2015