Observed water vapor fields during the International H₂0 Project using GPS [poster]
Braun, J., Rocken, C., & Kuo, Y. -H. (2004). Observed water vapor fields during the International H₂0 Project using GPS [poster]. In 14th Atmospheric Radiation Measurement (ARM) Science Team Meeting. U.S. Department of Energy: Albuquerque, NM, US.
The International H₂0 Project 2002 (IHOP_2002) was a field experiment located in the United States Southern Great Plains (SGP). The primary objective was to improve warm season rainfall prediction through the collection of precise observations of the water cycle and their assimilation into numeri... Show moreThe International H₂0 Project 2002 (IHOP_2002) was a field experiment located in the United States Southern Great Plains (SGP). The 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. ARM participated in this experiment through the launch of additional radiosondes at the central and extended facilities as well as making the normal ARM data products available to IHOP researchers. As part of a large assortment of observing systems, more than 40 Global Positioning System (GPS) stations were operating in the SGP region during IHOP_2002. A map of station locations, color-coded by operating agency, is shown below. We present an analysis of the evolution of the water vapor field during a storm on June 12, 2002. Spatial and temporal changes in vertically integrated precipitable water vapor (PW), slant water vapor (SW), and tomography solutions of the moisture field show it's complex distribution before, during, and after the passage of the storm. The observations collected with this system are able to observe the rapid convergence of water vapor during the initial stages of convection and track the movement of moisture from the boundary to the free troposphere. Show less