WMOD00318

• Title: A Cooperative Project Between the Kingdom of Morocco and the United States
• Date: 9/1/1989
• Country: United States, Morocco
• Weather Modification - Doc Type: Report

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I Figure
8.20
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8.21
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I 8.23
I 8.24
8.25
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I 8.27
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,I 8.30
8.31
I 8.32
10.1
I 10.2
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CONTENTS - Continued

Page

(a) Sample PPI from a storm on January 17, 1988. Range circles
are drawn at 50-kilometer intervals. At this elevation
angle (0.50), the ground return from the Atlas Mountains
(southeast of the radar) is quite prominent. (b) A zoomed
PPI of a convective echo band in the southeast quadrant of
the radar on February 21, 1989, viewed with an elevation

angle of 1.60. ........................................... 141

Time evolution of the radar return in the northern control
area (ZONE TEMOIN) and in the target area (ZONE CffiLE) ..... 142
Time evolution of precipitation over Beni Mella! as measured
by radar and rain gauge (February 10, 1989) . . . . . . . . . . . . . . . . . . .. 143
Echo type by synoptic situation. The four types of synoptic
situations are (1) postfrontal, (2) frontal, (3) prefrontal,
and (4) airmass convection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 143
Rain areas (km2) and water volume (m3) as a function of
radar reflectivity in a banded echo ........................... 144
The 15 gauged basins of the Atlas Mountains for which snow
cover was mapped in the retrospective study. . . . . . . . . . . . . . . . . . .. 149
Example Landsat band 2 image of the Atlas Mountains for
February 23, 1979, covering basins 2 through 11 of

figure 8.25 ............................................. 150

Example A VHRR visible band image of Morocco for
February 23, 1979 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 150
Plot of proportion snow-covered area versus time for basin 8
of figure 8.25, Ait Tamlilt, for the 1978-79 and 1981-82

seasons ............................................... 151

Area-elevation curve for the Tillouguit basin, showing
determination of mean hypsometric elevations for each
of the three elevation bands used to model snowmelt runoff ........ 151
Schematic of the Martinec-Rango Snowmelt Runoff Model ....... . . . " 152
Plot of simulated and measured streamflows for the
Tillouguit basin in the 1979 snowmelt season. . . . . . . . . . . . . . . . . . .. 152
Plot of simulated and measured streamflows for the
Tillouguit basin for March 1986 ............................. 153
Map of watershed, stream gauges, and dam locations within
the Oum Er Rbia River basin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 191
Schematic representation of the Oum Er Rbia water
management system showing diversions for turbines, .
irrigation, and municipal industrial water. Quantities of
installed hydroelectric capacity (MW), reservoir elevation,
and capacity (m3) are shown at each diversion. . . . . . . . . . . . . . . . . .. 192

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