My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
WMOD00315
CWCB
>
Weather Modification
>
DayForward
>
WMOD00315
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
7/28/2009 2:35:41 PM
Creation date
3/11/2008 2:43:45 PM
Metadata
Fields
Template:
Weather Modification
Title
Investigations of Winter Storms Over the Wasatch Plateau During the 1991 Utah/NOAA Field Program
Prepared For
Utah Department of Natural Resources Division of Water Resources
Prepared By
Arlen W. Huggins, Melanie A. Wetzel, Patricia A. Walsh
Date
10/1/1992
State
UT
Weather Modification - Doc Type
Report
Jump to thumbnail
< previous set
next set >
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
264
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
Show annotations
View images
View plain text
<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Storm Periods in Section 3. For analyses involving the USBR I-h radiometer data averages, the <br />10-min data were further averaged over 1-h periods. <br />Microbarographs were operated at the DOT site and the Mt. Pleasant Airport. The <br />airport unit was frequently compared to readings from a collocated mercury barometer and the <br />DOT barograph was compared on two occasions to a calibrated aneroid barometer. For Storm <br />Periods described in Section 3, the DOT pressure data were taken from the charts at 3o-min <br />intervals, corrected to agree with the calibrated units, and merged into fIles containing the other <br />DOT meteorological data. <br />Five recording, weighing-bucket precipitation gages were operated at the locations shown <br />in Fig. 2.1. The charts from these gages were reduced by the USBR in Denver and files of 1-h <br />amounts were produced. The DR! obtained these files from the USBR, converted the I-h <br />amounts to precipitation rates (mm hot) and merged these data into the DOT day-fIles noted <br />above. <br /> <br />E. K.-band Radar Data <br />The DR! maintained and occasionally operated the Utah K.-band radar during the 1991 <br />season. The entire data set was obtained from the UU group. Data were reformatted into day <br />fIles. Some software upgrading was performed to obtain a program that would read and process <br />either DR! or Utah radar data tapes. Subroutines were added which, 1) read a satellite CTT fIle <br />and annotated cloud top heights to radar fIles, 2) averaged radar returns for each range gate over <br />15-min intervals and converted the resultant average dBZ values to ice mass content (M) using <br />a Z-M relationship from Sassen (1987), and 3) produced average or maximum values of dBZ <br />by range gate over 6-min intervals and plotted these values in time-height format over 6-h <br />periods. Time-height plots appear in the Storm Period discussions of Section 3. The ice mass <br />content values will eventually be used in combination with sounding winds to produce estimates <br />of ice mass flux above the DOT site, for comparison with SLW and precipitation fluxes. These <br />water budget calculations will provide estimates of precipitation efficiency for specific portions <br />of 1991 storms. Results will be given in the Final Report of the 1992-1993 contract period. <br /> <br />E. NOAA Research Aircraft and NASA ER-2 Aircraft Data <br />The DR! arranged for two flights of the NASA ER-2 aircraft over the Utah/NOAA <br />research area. During these flights (on 11 and 14 March) the ER-2 recorded data from its <br />downward-looking A VIRIS (Airborne Visible and near-Infrared Imaging Spectrometer). DR! <br />obtained these data as well as data from the USBR for the NOAA King Air research aircraft. <br /> <br />2-8 <br />
The URL can be used to link to this page
Your browser does not support the video tag.