ITCT is a newly initiated activity of the International Global Atmospheric Chemistry (IGAC) program, which is a Core Project of the International Geosphere-Biosphere Programme (IGBP). ITCT combines two earlier IGAC activities: the North Atlantic Regional Experiment (NARE) and the East Asian/North Pacific Regional Experiment (APARE). While the bulk of the ground studies will be conducted at Trinidad Head in Northern California, additional sites are needed to fully understand the context of long-range pollution transport at the intensive site. Therefore, additional sampling sites are proposed to better characterize the extent and nature of long-range pollution transport events. Crater Lake NP is one such site proposed for this experiment.
Crater Lake is an excellent site to observe transport across the northern Pacific. It sits atop the Cascade crest with an unobstructed fetch to the Pacific, experiences consistent westerly winds, and the local area is heavily forested, reducing the likelihood of any persistent local dust source. Furthermore, there are few urban or industrial emission sources in the lowlands separating it from the Pacific. Sitting at an elevation of 3078 meters, Crater Lake is well above the persistent surface inversion over the eastern Pacific, and is in the heart of the mid-troposphere “transport layer” in which aerosols are easily carried very long distances. Asian dust has been detected at Crater Lake, most notably in the great “Yellow Sand” event of April 1998, and statistical analysis of the entire IMPROVE record there suggests that Asian transport to Crater Lake is common from February to November. In order to set-up a 3- or 8- DRUM sampler at Crater Lake, we need an outlet for power and a place to set-up the sampler with outside air. The air intake for the sampler would be piped into an existing air intake in the Ratt Hall attic.
Findings and Status: No activity was conducted this report year
For this study, were one or more specimens collected and removed from the park but not destroyed during analyses? No
Funding provided this reporting year by NPS: 0
Funding provided this reporting year by other sources: 0
Full name of college or university: University of California, Davis
Annual funding provided by NPS to university or college this reporting year: 0
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