Apr. 23, 2004 NAME Conference Kursinski et al. 1

NAME GPS PW & Surface Obs. ArrayNAME GPS PW & Surface Obs. ArrayRob Kursinski (PI) A. Hahmann, W. Kolczynski,

M . Leuthold, R. Maddox, R. Mastaler, C. Minjarez U. Arizona

Y. Bar-Sever JPL NASA

S. Gutman FSL NOAA

NSF (& NOAA?)NSF (& NOAA?)

Understand relation between PW and Understand relation between PW and precipitationprecipitation

Assess and improve knowledge and Assess and improve knowledge and model representations of moisture and model representations of moisture and precipitationprecipitation

Monitor intra- & inter-annual Monitor intra- & inter-annual variationsvariations

Aid in forecastingAid in forecasting

GPS GPS GPS

Puerto Penasco

Combine existing GPS Combine existing GPS instrumentation plus 5 new sets instrumentation plus 5 new sets

of in Northwestern Mexico toof in Northwestern Mexico to

C. Watts, I. Minjarez, C. Lazaraga UNISON

Apr. 23, 2004 NAME Conference Kursinski et al. 2

GPS NAMEGPS NAME Place 5 (to 7) additional instrumentation Place 5 (to 7) additional instrumentation

sets in Mexicosets in Mexico– GPS receiver, barometer, thermometer, GPS receiver, barometer, thermometer,

hygrometer,anemometer & web camhygrometer,anemometer & web cam– Locations being finalizedLocations being finalized

MeasureMeasure column water vapor column water vapor && surface surface meteorological conditions meteorological conditions – In convectively active area in SMOIn convectively active area in SMO– In clear and cloudy conditionsIn clear and cloudy conditions– 5 to 30 minute sampling 5 to 30 minute sampling – Resolve diurnal water vapor cycleResolve diurnal water vapor cycle

Internet for near real-time access & Internet for near real-time access & monitoringmonitoring

FSL will provide GPS processing in near FSL will provide GPS processing in near real-time at 30 minute resolutionreal-time at 30 minute resolution

Begin by early to mid-JuneBegin by early to mid-June Run continuously through end of NAME Run continuously through end of NAME

Summer 04 campaignSummer 04 campaign

6 Existing SuomiNet sites of UA/UNISON: Phoenix, Tucson, Mt. Hopkins, Douglas, Puerto Penasco, Hermosillo

RR

Apr. 23, 2004 NAME Conference Kursinski et al. 3

GPS & GPS & Simulation Simulation

ResultsResults

Mt. Hopkins

Tucson

WRFGPS

Diurnal PW variations over 4 days

WRF simulation

2003

Time derivative of PW

Monsoon in Tucson

Apr. 23, 2004 NAME Conference Kursinski et al. 4

Impact of Ground GPS on Analyses & ForecastsImpact of Ground GPS on Analyses & ForecastsRapid time variations in moisture captured by GPSRapid time variations in moisture captured by GPS Significantly improve the RUC moisture analyses & forecasts Significantly improve the RUC moisture analyses & forecasts

during periods of rapid moisture evolutionduring periods of rapid moisture evolution Provides detection of radiosondes getting “wet”Provides detection of radiosondes getting “wet”

Analysis 3 hr Forecast

Courtesy of Seth Gutman, NOAA FSL

RUC w/o GPSRUC w/ GPSGPSSonde

RUC w/o GPSRUC w/ GPSGPSSonde

Tucson