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As its main output, AAPP produces files of quality-controlled brightness temperature or radiance data for each instrument - either separately or mapped to a common field of view. An AVHRR cloud mask can also be generated. If profiles of atmospheric variables are required, the AAPP can be used in conjunction with an inversion package. AAPP radiance data are also used directly as input to variational data assimilation systems at several leading centres for Numerical Weather Prediction. AAPP development is closely linked to the activities and recommendations of the International TOVS Working Group (ITWG). The AAPP is freely available by licence, and distributed by the Met Office. See the link at the bottom of the page for instructions on how to request a copy of the AAPP.Questions for other users and developers can be posted on the AAPP Forum. The current version of AAPP is v7, first released in March 2012. |
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