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Improvement of the NVAP Global Water Vapor Data Set for Climate, Hydrological and Weather Studies

Improvement of the NVAP Global Water Vapor Data Set for Climate, Hydrological and Weather Studies Thomas H. Vonder Haar , John M. Forsythe, Janice L. Bytheway.

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Improvement of the NVAP Global Water Vapor Data Set for Climate, Hydrological and Weather Studies

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  1. Improvement of the NVAP Global Water Vapor Data Set for Climate, Hydrological and Weather Studies Thomas H. VonderHaar, John M. Forsythe, Janice L. Bytheway • Goal: Reanalyze and extend the NASA Water Vapor Project (NVAP) dataset (1988-2001) to create a climate quality data record of total and layered atmospheric water vapor with temporally consistent inputs. New dataset is called NVAP-MEaSURES. Will span 1987-2010. • Key Innovations: • User-specific approach to dataset creation. • Inclusion of new and previously unused NASA datasets. • Inclusion of datasets with improved quality control. • Removal of time-dependent biases from existing dataset. NVAP Monthly Mean Total Precipitable Water in Four Seasons • Year 1: Data set compilation; Retrieval algorithm implementation. Develop 2002-2003 testbed to overlap with NASA Aqua spacecraft • Year 2: Initial merger of datasets with daily, interannual and decadal user emphasis. Decision on implementation of 183 GHz retrievals • Year 3: Distribution of first pass datasets to science users. • Year 4: Deliver to NASA LaRC data center. • NASA Relevance: • NASA Earth Science studies, particularly those related to climate change, require stable, high quality records of global atmospheric variables. • A model-independent water vapor dataset complements other Earth Science Data Records of clouds, precipitation, sea ice… • Accomplishments to date: • 4 Conference presentations (2 oral, 2 poster) • 1 Conference abstract • Data and retrieval acquisition • Begun collaboration with JPL AIRS team. Schedule:

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