Measured top of atmosphere reflectance change since the year 2009 of the launch and corresponding pixel number for each site.
TANSO-CAI L1B version

• 2009/04/01- : V02.00.

※Cloud data screening with CAI L2 cloud flag.

Selection criteria of the TANSO-CAI monitor data

• Select the nearest pixel of the CEOS site.
• Select clear data with the TANSO-CAI cloud flag.
• Eliminate the TANSO-CAI band4 bad pixel.

Range of graph

• CAI：January 1～December 31

Radiance monitor
Tb: Brighteness Temperature (calculated by Plank's law)
TANSO-FTS L1B version

• 2009/04/01~ ： V300300

※Cloud data screening with brightness temperature at window channel.

• Red plots mean FTS grid observation.
• Green plots mean FTS target observation.

Selection criteria of the TANSO-FTS monitor data

• Select the TANSO-FTS exposure within 1 [deg.] of the CEOS site.
  (※Railroad valley: within 0.09 [deg.] of the site.)
• Cloud screening by radiance ratio of band1 WN1(13019.0[cm^-1]) / band2 WN6(6394.0[cm^-1]).

Radiance ratio threshold

• Algeria2:0.90, Algeria3:0.88, Egypt1:0.88, Libya4:0.90, Niger2:0.86, Railroad valley:1.15, Winton:1.00, Gobabeb:1.20

Range of graph

• FTS：January 1～December 31