A field campaign of the US-Japan Tropical Rainfall Measuring Mission (TRMM) (described in the December 9, 1998 Scout Report for Science & Engineering) and the University of Washington's Department of Atmospheric Sciences, the Kwajalein Experiment (KWAJEX) was designed to "document the internal structure of precipitating clouds in order to aid in the validation and physical understanding of the data from the TRMM satellite." The experiment was conducted Between July 23 and September 15, 1999, on Kwajalein Atoll in the Marshall Islands, and the Website holds documents describing KWAJEX's scientific background (.pdf, 6.94 MB) and the experimental plan (.pdf, 6.94 MB). Also, the KWAJEX Operations Center has coordinated and provided access to the data collected from various platforms and instruments. Researchers may access daily measurements, daily logs, daily cloud photo sequences, and documents. Overall, the site gives researchers a comprehensive collection of materials for this TRMM experiment.