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The Afternoon Constellation

The Afternoon Constellation - A-Train

A-Train Data

image representing a-train data. A-Train fly over of the super-typhoon Choi-wan
web view | hi-resolution

Individual Mission and Instrument Data

Each instrument team that comprises the Afternoon Constellation satellites has an established infrastructure for data production, archiving, and distribution of Level-1 and higher-order products. Details are available at the mission and/or instrument websites. In addition, cross-instrument A-Train and C-Train data distribution systems, including merged (collocated) data and visualization capabilities, have been developed as described below.

A-Train Data Depot

The A-Train Data Depot (ATDD) has been developed to help discover, visualize, analyze, and correlate distributed atmospheric measurements from A-Train and C-Train instruments. The ATDD portal provides a single on-line data access and services for science, applications, and educational users to obtain merged data files.


NASA GIOVANNI provides the capability to analyze a subset of Afternoon Constellation datasets. GIOVANNI includes a variety of statistical routines (maps, time series, etc.) that can be applied to single or multiple (correlative) constellation datasets.


The ICARE Thematic Center was created in 2003 by CNES, CNRS, the Nord-Pas-De-Calais Regional Council, and the University of Lille, to provide various services to support the research community in fields related to atmospheric research, such as aerosols, clouds, radiation, water cycle, and their interactions.

Afternoon Constellation Fact