Global Hydrology and Climate Center NASA Marshall Space Flight Center and Global Hydrology and Climate Center Contributions to GPM Franklin R. Robertson,

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Presentation transcript:

Global Hydrology and Climate Center NASA Marshall Space Flight Center and Global Hydrology and Climate Center Contributions to GPM Franklin R. Robertson, H. Michael Goodman, Steve Goodman, Sarah Graves, Robbie Hood, Gary Jedlovec, Kevin Knupp, Chip Laymon, Roy Spencer GPM Planning Meeting University of Maryland Inn and Conference Center May 16-18, 2001

Global Hydrology and Climate Center Research Topics: Lightning measurements from space Global temperature Urban environment studies Severe weather physics Global and regional weather/climate modeling Atmospheric chemistry and pollution Aerosol measurements and effects on climate Remote-sensing land use studies What we do: –Utilize space and other technology to better understand climate –Apply results to resource & environmental management –Educate next generation Earth scientists Education Research Applications

Historical MSFC / GHCC Science Strengths Particularly Relevant to GPM  Passive microwave data stream processing, product generation, distribution  Regional integrated field measurements for precipitation process studies, air / ground truthing, validation  Lightning measurements from space and integration with precipitation science and applications  Spectrum of water and energy cycle science studies embracing climate variability, precipitation algorithm development, regional modeling, hydrologic applications Global Hydrology and Climate Center

Passive Microwave Processing at GHCC Special Sensor Microwave Imager Products ( –Producing derived geophysical products based upon Wentz / Remote Sensing Systems (RSS) algorithms (1987-present) –WetNet project supported SSM/I processing and global algorithm precip analysis (PIP-1, PIP-2, PIP-3) Passive Microwave ESIP ( –Ingesting AMSU and TMI data streams (1997 – present) –Generating global temperatures and tropical cyclone max. wind products –RSS generates TMI products, GHCC archives and distributes Advanced Microwave Scanning Radiometer-EOS SIPS on Aqua –In will produce full range of Level-2B & -3 products (e.g., rain rate and type, water vapor, SST, cloud water, wind speed, sea ice, etc.) Lightning Imaging Sensor SCF ( –Ingesting LIS data on TRMM and surface validation data sets –Produces daily, weekly, and monthly lightning products Field Experiments ( –CAMEX-3 and –4 hurricane research –TRMM surface validation (TRMM-Brazil, TEFLUN)

GHCC Data Processing Role in GPM Serve as a data center for generation, archive, and distribution of data sets and products from the: –Advanced TMI (ATMI) –Constellation Microwave Radiometers (CMRs) Continue heritage of SSMI data products with ingest generation of geophysical products from SSMIS temperature data records Serve as a ground validation data center

GHCC Strengths in Field Measurements Aircraft Instrumentation Newly-selected UAV project –(Richard Blakeslee -- ACES) Ground-based Instrumentation Mission Science Leadership –CoHMEX, CAMEX-3, CAMEX-4 In -house –Modeling and Data Assimilation –Data Management and Data Mining –Educational Outreach –Graduate Student Pool

COOPERATIVE HUNTSVILLE-AREA RAINFALL MEASUREMENTS (CHARM) NETWORK Local precipitation network ( est. 1/2001) 96 sites in Huntsville & Madison County, AL NASA, Army, USGS, and NWS sites and weather enthusiasts Daily rainfall totals 3600 km 2 coverage (1 gauge per 6x6 km) Plans to expand to 200 stations by x4 km average spacing twice daily manual observations 1 minute data from 40 automated sites Supports local weather and climate research at the GHCC validate weather radar and lightning data from satellites monitor spatial distributions of precipitation for modeling activities various satellite remote sensing studies of soil moisture and energy fluxes 80km CHARM LOCATION MAP 76 manual and 20 automated rain gauges May 2001

The ACF and ACT basins are the subject of a comprehensive river basin study involving many stakeholders. MSFC locating, assessing, collecting relevant data bases A tri-state compact and water allocation formula is currently being negotiated between the states and U.S. Army Corps of Engineers (COE) that will affect the availability of water among competing uses within the ACF river basin. Water Resources Planning Apalachicola-Chattahoochee-Flint (ACF) and Alabama-Coosa-Tallapoosa (ACT) river basins of Alabama, Georgia, and Florida.

Global Water & Energy Cycle Weather Hazards ESE Objectives Existing observations do not see intensity and evolution Limits understanding, predictability Warning lead-times too short Warning false alarms too high Key Problems Total lightning measures intensity; Responsive to convective regime. We can observe it rapidly from space, over large regions. Enablers Optical LMS 90 o W Wide FOV 2 yr baseline ThOR Mission

Deep convective ice index, DCI, (green line) expressed in percent departure from normal. SST departures from climatology in Kelvin x 50. Averaged over the tropical oceans, year-to-year variations in precipitating ice follow variations in sea-surface temperatures. Tropical Deep Convective Ice Index Climatology Synthesized From MSU Ch2 Precipitating ice formed high within tropical rain storms produces local Tb minima in MSU Ch2 data. Interannual Variability Over The Tropical Oceans --- A new data set for climate diagnostics and model validation --- (Units K x 10 3 ) Franklin Robertson MSFC Climate Dynamics and Modeling Group

Evaporation / SST Sensitivity Over the Tropical Oceans During ENSO Events ENSO composite data from da Silva, Young, Levitus Surface Marine Data Set Tropical-mean SST perturbations during ENSO raise ocean-mean latent heat fluxes at rate of ~5.0 Wm -2 K -1 Thermodynamic anomalies,, dominate wind anomaly effects,. ENSO Latent Heat Flux Anomalies (Wm -2 ) for SST Anomaly > 1.0 S.D. Anomaly Frequency Distribution Contributions q s – q a effect Wind speed effect Latent heat flux anom (Wm -2 ) Anom weighted freq (Wm -2 )

Persistent solar flux with diurnal cycle (May) Software enhancements to insure water conservation ARPS provided by CAPS at the University of Oklahoma Using Advanced Regional Prediction System (ARPS) to Study the Coupled Hydrologic response to 2 X CO2 (Contact: Roy Spencer, Danny Braswell) Cumulative difference in rainfall for normal and doubled CO2 over a 1 year period after model equilibration shows invigorated hydrologic cycle model day runs 2-D, 1 Km res, 12 sec time step Tropical domain