Cross-correlation coefficient maps generated in the paper "Correlation of Venusian Mesoscale Cloud Morphology Between Images Acquired at Various Wavelengths" by Narita et al. published in Journal of Geophysical Research - Planets

This data archive contains the cross-correlation coefficient maps. Unzipping the compressed file, the following directories corresponding to different wavelength pairs appear.  

  IR1_IR2/          : 0.9 micron & 2.02 micron
  UVI283_UVI365/          : 283 nm & 365 nm
  IR2_UVI365/          : 2.02 micron &. 365 nm
  IR2_UVI283/          : 2.02 micron & 283 nm
  IR2_LIR/          : 2.02 micron & 10 micron

If usual unzip tools do not work, the use of 7zip is recommended:
https://www.7-zip.org/download.html

Each directory contains CSV files for the longitude-latitude distribution of the correlation coefficient. The 2880 longitude grids cover the longitude range of 0 - 360 degrees, and the 1440 latitude grids cover the latitude range of -90 - +90 degrees, with a pixel resolution of 0.125 degree/pixel. Invalid regions are filled with the value of 1.1.

Each filename is composed of the date, the instrument (wavelength), and the time. For example, for the file "20160720_ir2_150821_hp6_IR1_150209_hp6_sb24.csv":

  20160720 : July 20, 2016
  ir2 : 2.02 micron filter of IR2 camera
  150821 : IR2 exposure at 15:08:21
  hp6: High-pass filtering size is 6 deg x 6 deg
  IR1 : 0.9 micron filter of IR1 camera
  150209 : IR1 exposure at 15:02:09
  sb24 : Sliding box size is 24 deg x 24 deg