Robert J Zamora NOAA Earth System Research Laboratory Physical Sciences Division Boulder, CO Arizona...
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Transcript of Robert J Zamora NOAA Earth System Research Laboratory Physical Sciences Division Boulder, CO Arizona...
Robert J Zamora
NOAA Earth System Research Laboratory
Physical Sciences Division
Boulder, CO
Arizona HMT Soil Moisture Network
Overview
• Six soil moisture monitoring sites in the Babocomari River Basin
• Soil moisture and temperature at standard NRCS depths (5, 10, 20, 50, 100 cm)
• Surface air temperature and relative humidity• Tipping Bucket Rain Gages• Two minute temporal resolution transmitted to Boulder
hourly
HMT Arizona Soil Moisture Network
+ TUS
Fairbank, AZ online 1/2011
+FBK
Granby, Colorado
Babocomari River Flood 23 July 2008
• Second highest discharge measured on the river in the period of record
• First flood event captured by the HMT network
Meteorological Setting• Typical monsoon
upper air pattern consisting of a ridge over the four corners region
• No dynamic forcing• Significant
Convective Instability• CAPE= 2768 J/kg• LI= -4.77• Precipitable
Water= 52.52mm
July 22, 2008 12 UTCJuly 23, 2008 00 UTC
Soil Moisture ResponseLower Basin (WSE) 50 cm Caliche
• HMT Network data indicates that the lower Babocomari basin was saturated before the flood
• The upper basin had lower soil moisture values• Significant streamflow response in the lower Babocomari River
Upper Basin (FMS) 100 cm Caliche
Streamflow ResponseHydrograph Data:
• No streamflow response in the upper Babocomari River basin
Red Arrows Indicate Flow Direction
• Six stations operational in Arizona
• Handbook 5 ID’s for Arizona stations
• All preliminary data displayed in near real-time on PSD-2 data webpages http://www.esrl.noaa.govh/psd/data/obs/surfacefluxobs/soil/soil.php
• Zamora, R. J., F. M. Ralph, E. Clark, and T. Schneider, 2011: The NOAA Hydrometeorology testbed soil moisture observing networks: Design instrumentation, and preliminary results Journal of Atmospheric and Oceanic Technology, 28, 1129-1140.
• Zamora, R. J., E. Clark, E. Rogers, M. B. Ek, and T. A. Lahmers, 2012: An examination of soil moisture conditions in the Babocomari River Basin: The flood event of 23 July 2008. to be submitted to Journal of Hydrometeorology
Milestones
HMT Data and the Noah Land Surface ModelNAM Grid Point v. HMT comparisons:
Soil Moisture DifferencesNoah LSM Level 1 and HMT 5 cm:
• Noah LSM soil moisture values show dry bias in the lower basin• Wet bias in upper basin, seen at both ELG, and FMS
Noah LSM Level 2 and HMT 20 cm:
• WHTTUS •
Tucson 88D radar coverage at 1.0°