James H Porter PhD NYCDEP 19 September 2013 Watershed Science and Technical Conference Hotel Thayer West Point NY NYCDEP Snowpack Monitoring We used to do it We still do it Were ID: 366157
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Slide1
Snowpack Monitoring: Past, Present, and Future
James H. Porter, Ph.D.NYCDEP
19
September
2013
Watershed Science and Technical Conference
Hotel Thayer, West Point, NYSlide2
NYCDEP Snowpack Monitoring
We used to do it.
We still do it.
We’re
gonna
keep doing it.Slide3
NYCDEP Snowpack Monitoring
The End.Slide4
Why measure snow?Slide5
Uses of Snow Data
Estimate potential runoff into reservoirs
Required for reservoir operations under FFMP
Transitioning to runoff model system using OST
Used under Ashokan Interim Operating Protocol
Climate change assessment
Shared with NWS to assist river forecastingSlide6
Collaboration with NWSSlide7
Collaboration with NWSSlide8
History
Program started in 1930s
Data from 1960s to present
Melted-snow method
NEED PHOTO OF WATER SUPPLY NEWS WITH MENTION OF SNOW SURVEY…OR SOMETHING…Slide9
PresentSnow Cores Snow Pillows
Passive Gamma Monitoring (GMON)Slide10
SitesSlide11
Snow CoresFollow Natural Resources Conservation Service protocol Mt. Rose snow tubes
Biweekly – Northeast Regional Climate Center scheduleSupplemental surveys if deemed necessaryData shared with many stakeholders and NOAA
NWSSlide12
Snow Core MethodSlide13
Snow Core MethodSlide14
Snow Core MethodSlide15
Snow Core MethodSlide16
Snow PillowsMeasure water equivalent of snowpackDeveloped in the 1960s
SNOTEL network in western U.S. Used antifreeze
New design measures weight of water – no antifreeze
Note
data shared with NWS, show NOHRSC table and some plotsSlide17
Original Snow Pillow DesignSlide18
Original Snow Pillow DesignSlide19
Load Cell Pillow – PrototypeSlide20
Load Cell Pillow – Modified DesignSlide21
Load Cell Pillow – Modified DesignSlide22
Load Cell Pillow – Modified DesignProvide near-real-time dataData shared with NWS
Current: 14 stations Future: 35 stationsSeveral year effort
Working with NWS on locations
22Slide23
Passive Gamma MonitoringSlide24
Passive Gamma MonitoringSlide25
Passive Gamma MonitoringSlide26
Passive Gamma Sensor: GMONSlide27
Future InitiativesNanoscale ground penetrating radarSatellite measurements coupled to modelsSlide28
Nanoscale GPRSlide29
Nanoscale GPRSlide30
Satellite Measurements and ModelingSlide31
Satellite Measurements and ModelingObjective: develop methodology to use remotely
sensed data in combination with in situ observations to provide the most accurate possible estimate of snow cover in the New York City
water supply basins
Satellite data: AMSR and MODIS products
DEP snow pillows
DEP biweekly measurements
Intensive, targeted snow surveys by CUNY students
NWS National Snow Analysis productsSlide32
Thank You!