Comparison of WHITEX field study with model results

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:7198190

Stocker, R A; Pielke, R A ^[1]

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1. Colorado State Univ., Fort Collins, CO (USA)

Layered haze and plume blight are a major concern to national parks throughout the United States. It is of particular importance to the parks west of the Rocky mountains, where the natural visual range is large. This anthropogenic reduction of visibility is relevant to wintertime conditions in these regions where the dominant weather pattern (a polar high) can produce stagnant conditions lasting many days. A photographic technique has been used to show that there is significant visibility degradation in the western United States due to the trapping of pollution under these synoptic conditions. The authors report on a field experiment to identify source regions for haze episodes within the class I regions of Canyonlands and Grand Canyon National Parks along with the Lake Powell Recreational Area. This study, the winter haze intensive tracer experminent(WHITEX) was conducted in the months of January and February of 1987. The experiment consisted of ground based meteorological and tracer particle measurements along with two upper air soundings from Page, Arizona and Canyonlands National Park. A tracer, deuterated methane CD{sub 4}, was released from the three stacks at Navajo generating station (NGS) which have stack heights of 236 m above the ground. The tracer that was transported into the study region was measured to determine the relative contributions of pollution during haze episodes which can be attributed to stack emissions from NGS.

• OSTI ID: 7198190
• Report Number(s): CONF-880679--
• Country of Publication: United States
• Language: English

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