WMOD00400

• Contract/Permit #: 14-06-D-6801
• Title: Structure and Seedability of San Juan Storms
• Date: 11/1/1976
• Weather Modification - Doc Type: Report

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MS-2~O (2-72)
Bllrn:\ll of H('l('l:I.I11;Uiol1

TECHNICAL REPORT STANDARD TITLE PAGE

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~'f~EPOHT NO. T' c;0-/GiilM-cwl' ACCESSION N:-:----J3. RECIPIENT'S CATALOG NO.

4. TITLE AND SUllllTLE 5. REPOHT DATE

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November 1976
Structure and Seedability of San Juan Storms f-;;. PERI'ORMING ORGANIZATION CODE

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7. AUTHOR(S)
John D. Marwitz, William A. Cooper and
Clive P.R. Saunders

8. PERFORMING ORGANIZATION
REPORT NO.

9. PERFORMING ORGANIZATION NAME AND ADDRESS

Report No. ASl18

10. WORK UNIT NO.

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Department of Atmospheric Science
University of Wyoming
Laramie, Wyoming 82071

11. CONTRACT OR GRANT NO.

l4-06-D-680l

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13. TYPE OF REPORT AND PERIOD
COVERED

12. SPONSORING AGENCY NAME AND ADDRESS

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U.S. Bureau of Reclamation
P.O. Box 25007
Denver Federal Center
Denver. Colorado 80225
15. SUPFLEMENTARY NOTES

Final Report
u1y 1, 1974-August 31, 197(

14. SPONSORING AGENCY CODE

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15. ABSTRACT

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Aircraft observations of dynamical and microphysical processes
in San Juan storms were obtained during the winter of 1974-1975, in
connection with the Colorado River Basin Pilot Project. These observa-
tions are combined \.;rith other available data from the proj eet to yield
a generalized picture of the strom structure on all scales from synoptic
to microphysical. Transport and diffusion, ice crystal concentrations,
and liquid water contents are discussed for the different storm stages.
An assessment of the seedability of different storm stages is presented
and the CRBPP statistical results are discussed in light of these
conclusions.

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17. KEY WORDS AND DOCUMEIH AIJALYSIS

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o. DESCRIPTORS-.

Weather Modification
Cloud Physics
Cloud Dynamics
Diffusion
:>. /,,)Er~TJFJERS--

Turbulence
Orographic Storms
Cloud Seeding

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c. COSATI FIL~ld/GrOtJP

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1$. CloTRIBUTION STI\1U.\lNT 19. SECURi'fYCLASS :'.1. NO. OF PAGLS
(THIS RLPOH1)
Avcil()b!~ from thl' Notiollol Tcdll1icallnforrnotion Service, Operot;on~ liNe/ASS/I'll'/) 32/1 pp
l:i_'/i>Jun. Spr;";;f,,'/cJ, Vir/li,,;o 7715/. .---
:~O. SLCUH1TY CL/\SS'" P'~ICE
(THIS PAGl)
_____.__________J_J./NC I A" S/F IJiD ._ ._______

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