A Simple Orographic Precipitation Model for Hydrological and Climatological Use

  1. AGU Hydrology Section
  1. J. Owen Rhea

Published Online: 19 MAR 2013

DOI: 10.1029/SP004p0226

Precipitation Analysis for Hydrologic Modeling

Precipitation Analysis for Hydrologic Modeling

How to Cite

Rhea, J. O. (1975) A Simple Orographic Precipitation Model for Hydrological and Climatological Use, in Precipitation Analysis for Hydrologic Modeling (ed AGU Hydrology Section), American Geophysical Union, Washington, D. C.. doi: 10.1029/SP004p0226

Author Information

  1. Department of Atmospheric Science, Colorado State University

Publication History

  1. Published Online: 19 MAR 2013
  2. Published Print: 1 JAN 1975

ISBN Information

Print ISBN: 9781118656037

Online ISBN: 9781118668993

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Keywords:

  • Climatology;
  • Large-scale vertical motion;
  • Lifting condensation level (LCL);
  • Model airflow;
  • Orographic precipitation model;
  • Topography

Summary

A simple steady-state orographic precipitation model is being tested using the topography of Colorado on a 10×10 km grid mesh. Model input requirements are vertical profiles of wind, temperature, and humidity at the upwind borders of Colorado. Model output consists of total precipitation at each point over any desired “assumed period of representativeness” of input atmospheric conditions. Summation of any desired number of runs is provided for. Model output is compared to snow course and precipitation data. Preliminary results are discussed.