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Case Studies of Water Vapor Variability During the International H20 Project 2002 Using GPS

Braun, J., Rocken, C., and Kuo, Y.H., UCAR/COSMIC
Fourteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting

The International H20 Project 2002 (IHOP_2002) was a field experiment located in the United States Southern Great Plains whose primary objective was to improve warm season rainfall prediction through the collection of precise observations of the water cycle and their assimilation into numerical weather models. As part of a wide range of observing systems, more than 40 Global Positioning System (GPS) stations were operating in the experiment region during IHOP_2002. We present an analysis of the evolution of the water vapor field for significant storms that were captured by the network of GPS stations. Spatial and temporal changes in vertically integrated precipitable water vapor (PW), slant water vapor (SW), and tomography solutions of the three dimensional distribution of water vapor show the complex distribution and changes that occur during storms. Results and examples will be presented.

Note: This is the poster abstract presented at the meeting; an extended version was not provided by the author(s).