FLASH FLOOD FORECASTING OVER COMPLEX TERRAIN: With an Assessment of the Sulphur Mountain NEXRAD in Southern California by National Research Council of the National Academies

Author:National Research Council of the National Academies
Language: eng
Format: epub
Tags: Earth Sciences : Earthquakes, Floods and Natural Disasters
Publisher: NATIONAL ACADEMY PRESS
Published: 2004-12-23T00:00:00+00:00

FIGURE 7.2 Schematic representation of the beam power loss integration. The varied intensity of the yellow color signifies the fact that more power is concentrated near the beam axis. SOURCE: Witold Krajewski, University of Iowa.

In the direction of the open ocean at the same antenna elevation angle and at a range of about 100 km from the radar, the beam “illuminates” a portion of the atmosphere that extends from 1.5 km to slightly more than 3 km in the vertical. At the range of 150 km the corresponding portion extends from 2.25 to 4.75 km. Coverage down to the typical altitude of the low-level jet (about 1 km) is restricted to ranges of a few tens of kilometers.

FIGURE 7.3 Sulphur Mountain NEXRAD (KVTX) 0.5° beam and terrain profile in the direction of the Santa Ynez Mountains (280° from the north). SOURCE: Witold Krajewski, University of Iowa.

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