The influence of mountain meteorology on precipitation chemistry at low and high elevations of the Colorado Front Range, USA
Atmospheric Environment
By: A. Scott Denning
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Abstract
We explored the seasonal characteristics in wet deposition chemistry for two sites located at different elevations along the east slope of the Colorado Front Range in Rocky Mountain National Park. Seasonally separated precipitation was stratified into highly concentrated (high salt), dilute (low salt), or acid-dominated precipitation groups. These groups and unstratified precipitation data were related to mean easterly or westerly zonal winds to determine direction of local transport. Strong acid anion associations were also determined for the stratified and unstratified precipitation data sets. We found that strong acid anions, acidity, ammonium, and high salt concentrations originate to the east of Rocky Mountain National Park, and are transported via up-valley funneling winds or convective instability from differential heating of the mountains and the plains to the east. These influence the composition of precipitation at Beaver Meadows, the low elevation site, throughout the year, while their effect on precipitation at Loch Vale, the high elevation site, is felt most strongly during the summer. During the winter, Loch Vale precipitation is very dilute, and occurs in conjunction with westerly winds resulting from the southerly location of the jet stream.
Suggested Citation
Denning, A.S., 1993, The influence of mountain meteorology on precipitation chemistry at low and high elevations of the Colorado Front Range, USA: Atmospheric Environment, v. 27, no. 15, p. 2337-2349, https://doi.org/10.1016/0960-1686(93)90402-K.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | The influence of mountain meteorology on precipitation chemistry at low and high elevations of the Colorado Front Range, USA |
| Series title | Atmospheric Environment |
| DOI | 10.1016/0960-1686(93)90402-K |
| Volume | 27 |
| Issue | 15 |
| Year Published | 1993 |
| Language | English |
| Publisher | Pergamon Press |
| Publisher location | New York, NY |
| Description | 13 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Atmospheric Environment |
| First page | 2337 |
| Last page | 2349 |
| Country | United States |
| State | Colorado |
| Other Geospatial | Rocky Mountain National Park |