All the science teams have programs to validate the data from their respective instruments on the Aqua satellite, and descriptions of these programs can be found at the following links:
AIRS/AMSU/HSB
Validation Activities Overview
AMSR-E
Validation Activities
CERES
CERES Validation Documents
CERES ARM Validation Experiment (CAVE)
MODIS
Land Team Validation
Atmosphere Team Validation
Ocean Team Validation