HELP ! AGU Scientists needed to: Collaborate with student researchers Integrate GLOBE data in your investigations Collaborate with GLOBE scientists Mentor local students Global Positioning System Method Magellan Trailblazer XL Shared units; 15 x 1 min average procedure Purpose Accurate positions of GLOBE study sites for satellite validation and data visualization Spatial correlation of biosphere data for research Student use and understanding of advanced technology Principle Investigator Whit Smith Georgia Tech Land Cover and Biometry Method Modified UNESCO Classification; 90x90 m species ID Canopy and surface cover, DBH, phenology Research Directions Model ET/NPP, initially using PnET in temperate forests Validate algorithms linking satellite measurements to terrestrial biomass and productivity, changing forest biomass, and satellite-derived land-cover maps Principle Investigators David Bartlett & Russell Congalton University of New Hampshire Soils Method Characterize and describe soil horizons in Pit (1m) Thickness, depth, color, structure, texture, rocks & roots Research Directions Soils importance in modulating climate, biological productivity, maintaining biodiversity & water purification Global variability and distribution of soils; Model parameters Accuracy assessment of current soil maps and map products Principle Investigators Elissa Levine & Marc Imhoff NASA, GSFC Soil Moisture Method Point and Transect gravimetric averages, acc. ~ 1% Gypsum block depth profiles (problematic calibration) Research Directions Parameterizing initial soil moisture in GCM and mesoscale models Validation of satellite soil moisture estimates Improve Soil-Veg-Atmo models Principle Investigators Jim Washburne & Alfredo Huete HWR/SWS, University of Arizona Water Chemistry Method Phase I: water temperature & pH (paper-meter) Phase II: DO (colormetric), ALK (drops), cond. (pen) Research Directions Evolution of water quality along continuous channels Distribution and variability of water characteristics Health of riparian and estuary environments Principle Investigators Roger Bales & Martha Conklin University of Arizona Atmosphere/Climate Method Daily (noon) observations of max/min Air Temperature, Precipitation and Cloud cover Research Directions Calibration/validation of indirect estimates of precip. Remote sensing algorithm validation - QC'd data sets at appropriate spatial scales Assimilation of student data into surface data sets Principle Investigators Susan Postawko & Mark Morrisey University of Oklahoma Trace Gases - I Method Monthly grab sampling of ambient air, 7 locations Stainless steel canisters (4 l);Denuder tubes for aerosols Analysis: GC (CH4 CO2 N2O) (CFC 11, 12); IC (SO4) Research Directions Trace gas distribution and variability Biological and climate modeling (CONSTABLE, PnET) Principle Investigators Glen Marotz & Dennis Lane University of Kansas Trace Gases - II Method Battery-operated pump/canister (0.8 l) @ Hub schools Analyze CO2 CH4 N2O CFC 11 Research Directions Global trends in critical greenhouse gases - robust sample Model environmental interactions and gas budgets Develop new and improved low-end sample protocols Principle Investigators Aslam Khalil & R. Rasmussen Portland State University & Oregon Graduate Institute Ultraviolet Radiation Method Photochemical dosimeter (reusable, <$10) Optional UV photometer Research Directions Validate UV-B dose prediction models Study effect of lower atmospheric variability on UV transmission Variability in time and space - large sample population Development of simple technologies for radiation measurements Principle Investigator Dan Rodier University of Colorado