Presentation on theme: "WATERs: Demonstration and Development of a Test-bed Digital Observatory for the Susquehanna River Basin and Chesapeake Bay Michael Piasecki Drexel University."— Presentation transcript:
WATERs: Demonstration and Development of a Test-bed Digital Observatory for the Susquehanna River Basin and Chesapeake Bay Michael Piasecki Drexel University Bill BallJohns Hopkins University Pat ReedPenn State University Kevin DresslerPenn State University Page 1 WATERs Workshop Austin, TX November 15, 2006
Page 4 Project Objectives deploy HIS WorkGroup level Observations Database Model and ancillary packages like access portal, data loader, HIS Analyst, and hydro-objects library (Drexel U.) identify, collect, extract, and prepare Susquehanna River and Chesapeake Bay data for ODM population (JHU for CB data, and PSU for SRB data) perform a Gap Analysis of available data that would seek to identify the data requirements to support the scientific questions (PSU, JHU, Drexel U.) use SPARROW (SPAtially Referenced Regressions On Watershed attributes) to identify "hot zones" in terms of nutrient contributions and/or their associated uncertainty. This information is then used to conceptualize where we should locate stream reach arrays (Figure 4). Issues that would be addressed include: network design for basin-scale stream reach arrays, (PSU) provide direct link SPARROW and PIHM to ODM using HydroObjects library or webservices. Need to develop these specifically as they do not yet exist. (Drexel U.) test metadata framework for ODM: can the metadata be supplied? How easy is it? Is the data loader a reasonable tool? Do we need additional metadata based on the number of data sources we have? (Drexel U., JHU, PSU) Test functionality of cybercollaboratory for project communication, document repository, and provide feedback to development team (Drexel U., JHU, PSU)
Page 2 Susquehanna Watershed and Chesapeake Bay Contributes 75% of nutrient fluxes to CB main stem Nitrogen mostly in dissolved form 60% Agriculture contributions, 30% atmospheric Phosphorus mostly in particulate form, associated with erosion and sediment fluxes, approx 2000 tons yearly trapped in 3 largest reservoirs. Low load from upland forests, => disproportionate contribution from lower Susquehanna Basin excessive nutrient influx causes algal blooms in CB subsequent hypoxic water cause shell fish decline seagrass dieback, adverse affect for bio diversity sources and fates of nutrients are poorly understood because of limited knowledge of fluxes, stores, and residence times of water The drainage basin for the Chesapeake Bay extends over 6 states (MD, VA, PA, NY, WVA, DE) and covers 166,000 km2 (65,000 mi2).
Example of delivered nitrogen yield in 1987, using the SPARROW Model (Preston and Brakebill, 1999) Example Bay Region Model Spatial Outputs Relation of predicted and observed total nitrogen load after SPARROW (Preston and Brakebill, 1999) Page 9
Spatial Network Design Tradeoffs Apply visualization and gap analysis tools to SPARROW Model spatial output -- Target future monitoring locations -- Reduce model uncertainty Page 10
Page 11 SPARROW & ODM NWIS NARR NAWQA SPARROW Input file Hand collection, preparation, and manual feed into applic. HODM WorkGroup HIS Regional Subsets …populate SPARROW_webservices Automatic ingestion PIHM
USGS GCMD Mapper Controlled vocabulary Metadata specifications FGDC ISO Mapper Page 12 Need to find all hits in data sets X and Y Metadata repository e.g. search for stage height Metadata (FGDC) about dataset Y Theme_Keyword = Gage Height Theme_Keyword_Thesaurus = USGS Metadata (ISO) about dataset X keyword = Stage Height thesaurusName = GCMD Need to resolve metadata heterogeneityby mapping vocabulary & metadata Metadata Development and Semantic Mediation
Page 13 Questions? Contact: Michael PiaseckiMichael.Piasecki@drexel.eduMichael.Piasecki@drexel.edu Bill Ballbball@firstname.lastname@example.org Pat Reedpreed@email@example.com Kevin Dresslerkxd11@firstname.lastname@example.org Project Website: soon to come …..