Skip to Main Content
Annual wet and dry deposition of sulfur and nitrogen in the Snowy Range, WyomingAuthor(s): Karl Zeller; Debra Harrington; Al Riebau; Evgeny Donev
Source: Atmospheric Environment. 34: 1703-1711.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
PDF: Download Publication (271.91 KB)
DescriptionThe collocation of three national networked programs NADP, EPA's CASTNET, and the Forest Service's IMPROVE Module A, within a few hundred meters of each other in the pristine Medicine Bow forest of Wyoming has made it possible to assess the total amount of sulfur and nitrogen deposition, both wet and dry for this alpine/subalpine ecosystem. Additional sites within a few kilometers add spatial depth to this study. Wet deposition assessed using NADP data accounts for 1 to a little over 3 kg ha~1 yr~1 for both nitrogen and sulfur; however, annual trends for the two species di!er. Dry deposition assessed using both CASTNET (a.k.a. NDDN) and IMPROVE (for sulfur) indicates 1}2 kg ha~1 yr~1 for nitrogen but less than 1 kg ha~1 yr~1 for sulfur. The overall trend of wet plus dry for nitrogen has been downward from 5 kg ha~1 yr~1 in 1989 to 3.6 kg ha~1 yr~1 in 1994, while varying between 2 and under 4 kg ha~1 yr~1 for sulfur. This paper introduces the sites and presents the three programs and the analysis approach. Spatial comparisons between sites are investigated. Weekly data are analyzed from three NADP sites, separated horizontally 6.8 and 2.4 km and vertically 430 and 98 m from the highest elevation site. The site comparisons demonstrate that winter season data requires careful analysis due to the vagaries of inefficient precipitation collection during high winds and snow fall.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationZeller, Karl; Harrington, Debra; Riebau, Al; Donev, Evgeny. 2000. Annual wet and dry deposition of sulfur and nitrogen in the Snowy Range, Wyoming. Atmospheric Environment. 34: 1703-1711.
Keywordsnitrogen deposition, sulfur deposition, wet deposition, dry deposition, atmospheric deposition
- Atmospheric dry deposition of sulfur and nitrogen in the Athabasca Oil Sands Region, Alberta, Canada
- Biogeochemical cycling of carbon, nitrogen, and sulfur at the Howland Integrated Forest Study site, Howland, Maine
- Lake and bulk sampling chemistry, NADP, and IMPROVE air quality data analysis on the Bridger-Teton National Forest (USFS Region 4)
XML: View XML