Terrain Influences on Precipitation in the Intermountain West as Related to Synoptic Situations

Williams, Philip L.; Peck, Eugene L.

doi:10.1175/1520-0450(1962)001<0343:tiopit>2.0.co;2

Cited by 26 publications

(15 citation statements)

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“…In this regard, two points are important. It can be shown (Pearson, 193 1;Price & Evans, 1937;Lull & Ellison, 1950;Williams & Peck, 1962;NOAA, 1978;Houghton, 1979) that:…”

Section: Atmospheric Flow Structurementioning

confidence: 99%

Biogeography of Two Southwest American Oaks in Relation to Atmospheric Dynamics

Neilson¹,

Wullstein²

1983

Journal of Biogeography

129

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“…In this regard, two points are important. It can be shown (Pearson, 193 1;Price & Evans, 1937;Lull & Ellison, 1950;Williams & Peck, 1962;NOAA, 1978;Houghton, 1979) that:…”

Section: Atmospheric Flow Structurementioning

confidence: 99%

Biogeography of Two Southwest American Oaks in Relation to Atmospheric Dynamics

Neilson¹,

Wullstein²

1983

Journal of Biogeography

129

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“…In a study of a frontal cyclone over the British Isles, Browning and Harrold (1969) are of the opinion that the first mechanism is the more important one. On the other hand, Williams and Peck (1962) found that the excess of mountain over valley winter precipitation in northwest Utah was smaller for cold lows than for frontal systems. Without knowing the character of the precipitation (i.e., steady or showery), it is not possible to determine which mechanism is dominant.…”

Section: Introductionmentioning

confidence: 98%

A simple method of computing the variation of annual precipitation over mountainous terrain

Danard

1971

Boundary-Layer Meteorol

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A method for computing the distribution of annual precipitation for mountainous areas is presented. As a pilot study, the South Thompson River basin in British Columbia is examined. In addition to data from climatological (valley) stations, annual precipitation is estimated for snow course (mountain) locations from the water equivalent of the snowpack on April 1.An equation for the dependence of precipitation amount on orography is derived from simple physical considerations. Regression equations based on this are then computed and the calculated precipitation is checked with runoff data. A basic predictor is the mean vertical water vapor transport through a horizontal unit area due to flow over undulating terrain. This depends on the average slope of a region 3 deg long by 2 deg lat centered on each grid point. The transport at the earth's surface has a simple correlation coefficient with the combined valley and mountain precipitation data of 0.76. When the transport is computed at the mean cloud base (taken as 1800 m above sea-level), the correlation coefficient rises to 0.87.

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“…By comparison t o this effect, elevational influences on other characteristics of mountain snow accumulation have received almost no attention. The work of Williams and Peck (1962) and Peck (1964; along a transect across the Wasatch Mountains suggests that the variability, as well as the amount, of snowfall may be influenced by a topographic-atmospheric interaction. A similar implication lies in the use of the ratio of high elevation to low elevation snow accumulation in runoff prediction (Work, el al., 1961).…”

Section: Introductionmentioning

confidence: 99%

AN ELEVATIONAL CONTROL OF PEAK SNOWPACK VARIABILITY¹

Caine

1975

J American Water Resour Assoc

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The records of the seasonal peaks in snow accumulation on 24 snow courses show that the relative variability (measured by the coefficient of variation) is inversely related to elevation in the San Juan Mountains, southwestern Colorado. Analysis on an annual basis shows that this is due to a tendency for the peak snowpack at high elevations to be closer to the long‐term mean while that at low levels is further from the normal. This is true in both above‐normal and below‐normal accumulation seasons. Extrapolation of 20 annual elevation‐accumulation trends suggests that mean accumulation is reached at 4107 ± 186 m elevation. This is approximately the height of the topographic harrier of the San Juan Mountains suggesting that the pattern of variability is a partial function of an atmospheric‐topographic interaction.

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Terrain Influences on Precipitation in the Intermountain West as Related to Synoptic Situations

Cited by 26 publications

References 0 publications

Biogeography of Two Southwest American Oaks in Relation to Atmospheric Dynamics

Biogeography of Two Southwest American Oaks in Relation to Atmospheric Dynamics

A simple method of computing the variation of annual precipitation over mountainous terrain

AN ELEVATIONAL CONTROL OF PEAK SNOWPACK VARIABILITY¹

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Terrain Influences on Precipitation in the Intermountain West as Related to Synoptic Situations

Cited by 26 publications

References 0 publications

Biogeography of Two Southwest American Oaks in Relation to Atmospheric Dynamics

Biogeography of Two Southwest American Oaks in Relation to Atmospheric Dynamics

A simple method of computing the variation of annual precipitation over mountainous terrain

AN ELEVATIONAL CONTROL OF PEAK SNOWPACK VARIABILITY1

Contact Info

Product

Resources

About

AN ELEVATIONAL CONTROL OF PEAK SNOWPACK VARIABILITY¹