2 edition of Diagnosis and prediction of precipitation in regions of complex terrain found in the catalog.
Diagnosis and prediction of precipitation in regions of complex terrain
Pamela Speers Hayes
by Washington State Dept. of Transportation, Planning, Research and Public Transportation Division in [Olympia, Wa]
Written in English
|Statement||by Pamela Speers and Clifford F. Mass ; prepared for Washington State Department of Transportation and in cooperation with U.S. Department of Transportation, Federal Highway Administration.|
|Contributions||Mass, Clifford F., Washington (State). Dept. of Transportation., United States. Federal Highway Administration.|
|The Physical Object|
|Pagination||xiv, 159 p. :|
|Number of Pages||159|
At low resolutions, ranging from tens to hundreds of km, relevant for predictions from a few weeks ahead to climate timescales, the MetUM and IFS exhibited too strong zonal winds (relative to analyses) in the lower stratosphere (the location of maximum resolved orographic gravity wave breaking) over both the Himalayan and Middle East regions. precipitation events were examined in CMIP5 models, using, as a metric, the Extreme Precipitation Index (EPI) and a similar method based on the EPI. An increasing trend over the CONUS was found in the EPI, with variation among seven sub-regions. Model median of.
Bothe et al. () described the precipitation climate in the larger Tian Shan region of Central Asia in terms of climatological seasonal moisture fluxes and background circulation. They computed the standardized precipitation index (SPI) (McKee et al., ) for three regions, one of which covers the Tarim River by: 8. Precipitation contours are drawn at an interval of 50 mm/month. "CAMS" is an acronym for the "Climate Anomaly Monitoring System" in use at the Climate Prediction Center (CPC) at the U. S. National Centers for Environmental Prediction (NCEP).
Climate - Climate - World distribution of precipitation: The yearly precipitation averaged over the whole Earth is about cm (39 inches), but this is distributed very unevenly. The regions of highest rainfall are found in the equatorial zone and the monsoon area of Southeast Asia. Middle latitudes receive moderate amounts of precipitation, but little falls in the desert regions of the. International Conference on Alpine Meteorology Call for Papers. We are pleased to announce the 33rd International Conference on Alpine will take place from 31 August to 04 September in Innsbruck, a scenic town located in the heart of the Austrian on all aspects of mountain weather and climate are welcome, including but not limited to.
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Diagnosis and Prediction of Precipitation in Regions of Complex Terrain Author: Pamela Speers, Clifford F. Mass Subject: Forecasting, Mathematical models, Minicomputers, Mountains, Physical distribution, Precipitation \(Meteorology\), Terrain, Topography, Wind Keywords.
The second section presents a simple numerical model of precipitation in complex terrain. Although the results are not perfect by any means, they can usefully indicate the variation of precipitation in the mountains of our area.
However, such a model requires at least a minicomputer to run it. proportional to the increase in total precipitation, whereas in summer a broadening of the precipitation distribution is found.
The spatial change patterns in summer are much more heterogeneous than in winter, with regions of signiﬁcant increase and decrease sometimes close to Cited by: west Germany because of the complex orography, which should particularly beneﬁt from the high resolution of the RCM and the high data availability for that region.
An analysis of the mean precipitation of both RCMs for the same time period and region can be found in Feldmann et al. In section 2 a brief description of the RCMs used is.
The terrain effects necessitate adjustments in the location of these two sigma levels. Adjusted wind fields cause modifications in the mass and moisture divergence fields, hence in precipitation. These modifications are averaged into the appropriate meteorological fields on the larger by: 4.
The various orographic processes are illustrated using several field study and modeling results. The prediction of orographic precipitation is discussed using a km grid spacing simulation and sensitivity results from a linear orographic precipitation model for a flooding event over southwest Washington in early November Cited by: (Mediterranean climate) and Murska Sobota (Continental climate).
The annual cycle of precipitation depends strongly on the major climate system that influences a specific region (Figure 3). In the Mediterranean region there are two maximums: in late spring and in autumn. In the Alpine region the most pronounced precipitation maximum is in autumn, T TFile Size: KB.
In mountainous regions, deriving time series of spatially averaged precipitation is often complicated by a significant spatial and temporal variability in precipitation. This problem is further aggravated by the very sparse rain gauge networks in mountainous regions such as the Andes .Cited by: Precipitation Prediction System in FY and These enhancements helped JMA to develop High-resolution Precipitation Nowcasts, (HRPNs), which support close-up high-precision precipitation analysis and prediction.
HRPNs involve the use of an X-band multi-parameter radar Predictions outside the selected regions. The book concludes with a discussion of the current state of research and forecasting in complex terrain, including a vision of how to bridge the gap in the future.
Fotini (Tina) Katopodes Chow is an associate professor in Civil and Environmental Engineering at the University of California, Berkeley. This is particularly problematic in highly variable terrain with low station density Whereas some interpolated datasets use elevation as a predictor (e.g., WorldClim 8) and observations such as the Global Historical Climate Network (GHCN) 14,15 to achieve a high-resolution prediction, it is alsoCited by: Timely diagnosis and treatment shortens the time to resolution of Coronavirus disease (COVID) pneumonia and lowers the highest and last CT scores from sequential chest CT Characterizing precipitation events leading to surface water flood damage over large regions of complex terrain.
the associated precipitation characteristics has. diagnosis of rainfall events over different regions in Tanzania. The main purpose of the The complex topographical terrain of Tanzania even makes weather forecast and climate prediction to.
1 Introduction. The issue of added value (AV) is central to the use of regional climate modeling as a dynamical downscaling method for the provision of fine‐scale regional climate information [e.g., Leung et al., ; Giorgi, ; Laprise et al., ; Laprise, ].Nested Regional Climate Model (RCM) simulations are indeed useful as climate downscaling tools to the extent that they add Cited by: predictions are an integral part of political and societal plan-ning for the coming decades to centuries, and the recent re-port from the Intergovernmental Panel on Climate Change (IPCC) summarises many of these future predictions (IPCC, a).
Because climate models are based on fundamental scien. This research adapted an orographic precipitation model developed during a previous WSDOT project (Report No.
WA-RD) to run efficiently on an operational basis on a personal computer, and made numerous model improvements. The precipitation model is being used operationally at the Northwest Avalanche Center in Seattle.
For the rainfall amount, the means and upper quartiles of the five sub-regions increase with increasing terrain elevations (Fig. 7a). The mean rainfall amount in the westernmost region is only mm/h whereas that in the easternmost region reaches mm/h. An extensive evaluation of nine global-scale high-resolution satellite-based rainfall (SBR) products is performed using a minimum of 6 years (within the period of –13) of reference rainfall data derived from rain gauge networks in nine mountainous regions across the by: This review paper explores the field of mesoscale to microscale modeling over complex terrain as it traverses multiple so-called gray zones.
In an attempt to bridge the gap between previous large-scale and small-scale modeling efforts, atmospheric simulations are being run at an unprecedented range of resolutions. The gray zone is the range of grid resolutions where particular features are Cited by: 2. 1-Month, 3-Month, 6-Month, Month, and Year-to-Date National, Divisional, Statewide, and Regional Temperature and Precipitation Maps.
Precipitation is a major component of the water cycle, and is responsible for depositing most of the fresh water on the imatelykm 3 (, mi 3) of water falls as precipitation each year,km 3 (95, cu mi) of it over the oceans.
Given the Earth's surface area, that means the globally averaged annual precipitation is millimetres (39 in).Regional Precipitation-Frequency Analysis and Spatial Mapping of Precipitation for Hour and 2-Hour Durations in Eastern Washington Prediction of Precipitation in Western Washington State.
Full Document (pdf 1, KB) WA-RD Diagnosis and Prediction of Precipitation in Regions of Complex Terrain.
Full Document (pdf 2, KB.Topography: Complex mountain terrain is very challenging for weather predictions. Low clouds and precipitation can rapidly develop there without being detected, and will then not be sufficiently considered in the weather model.
These weather patterns are very difficult to forecast, vary in place and time or depend on local terrain.