Venusian Cloud Cross-Correlation Coefficient Maps from Akatsuki Orbiter

Cross-correlation coefficient maps for Venusian mesoscale cloud morphology, generated from images acquired by the Akatsuki orbiter's cameras at various wavelengths. The data consists of CSV files with 2880 longitude grids (0-360 degrees) and 1440 latitude grids (-90 to +90 degrees) at a 0.125-degree pixel resolution. This archive was created by researchers including Takeshi Imamura of The University of Tokyo for the paper 'Correlation of Venusian Mesoscale Cloud Morphology Between Images Acquired at Various Wavelengths' published in the Journal of Geophysical Research - Planets.

Use Cases

• Analyzing spatial correlation of cloud features based on cross-correlation coefficient maps between different wavelengths.
• Studying Venusian atmospheric dynamics based on longitude-latitude distributions of correlation coefficients.
• Validating cloud tracking algorithms based on time-stamped image pairs from the IR and UVI cameras.
• Investigating mesoscale cloud morphology based on data processed with specified high-pass filter and sliding box sizes.

Strengths

• High spatial resolution with 2880 x 1440 grid points covering the full globe at 0.125 degrees/pixel.
• Structured data organization with separate directories for five specific wavelength pairs (e.g., IR1_IR2, UVI283_UVI365).
• Detailed file naming convention encoding date, instrument, exposure time, and processing parameters for traceability.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

The University of Tokyo / Akatsuki orbiter mission data.

Collection Method

Generated from processed images acquired by the Akatsuki orbiter's IR and UVI cameras.

Time Range

Includes data from at least July 20, 2016, as per example filename.

Geography

Global coverage of Venus (longitude 0-360°, latitude -90 to +90°).