A5055129148- Scientific Computing and Data Management
- Distributed and Parallel Computing Systems
- Research Data Management Practices
- Semantic Web and Ontologies
- Geographic Information Systems Studies
- Advanced Data Storage Technologies
- Data Management and Algorithms
- Advanced Computational Techniques and Applications
- Hydrology and Watershed Management Studies
- Advanced Database Systems and Queries
- Service-Oriented Architecture and Web Services
- Cryospheric studies and observations
- Environmental Monitoring and Data Management
- Meteorological Phenomena and Simulations
- Atmospheric and Environmental Gas Dynamics
- Data Quality and Management
- Geochemistry and Geologic Mapping
- Soil Geostatistics and Mapping
- Digital and Traditional Archives Management
- Image Processing and 3D Reconstruction
- Plant Water Relations and Carbon Dynamics
- 3D Surveying and Cultural Heritage
- Remote Sensing and Land Use
- Algorithms and Data Compression
- Big Data and Business Intelligence
University of California, Santa Barbara
2007-2022
University of California System
1993-2010
University of Southampton
2007
Argonne National Laboratory
2007
University of Chicago
2007
Center For Remote Sensing (United States)
1995-2005
Digital elevation models are now widely used to calculate terrain parameters determine incoming solar and longwave radiation for use in surface climate models, interpretation of remote-sensing data, hydrologic models. Because the large number points an grid, fast algorithms useful save computation time. A description is given rapid methods calculating slope azimuth, illumination angle, horizons, view factors from sky terrain. Calculation time reduced by lookup tables.
Abstract The first Provenance Challenge was set up in order to provide a forum for the community understand capabilities of different provenance systems and expressiveness their representations. To this end, functional magnetic resonance imaging workflow defined, which participants had either simulate or run produce some representation, from identified queries be implemented executed. Sixteen teams responded challenge, submitted inputs. In paper, we present challenge queries, summarize...
Wikipedia is a free encyclopedia that anyone can edit and popular example of user-generated content includes volunteered geographic information (VGI). In this article, we present three main contributions: (1) spatial data model collection methods to study VGI in systems may not explicitly support data; (2) quantitative for measuring distance between online authors articles; (3) empirically calibrated results from gravity the role production. To processes contributors, use an invariant...
The Earth System Science Workbench (ESSW) is a non-intrusive data management infrastructure for researchers who are also publishers. An implementation of ESSW to track the processing locally received satellite imagery presented, demonstrating Workbench's transparent and robust support archiving publishing products. features Lab Notebook metadata service, an ND-WORM (No Duplicate-Write Once Read Many) storage Web user interface tools. logs processes (experiments) their relationships via...
The goal of the Alexandria Digital Library Project is to develop a distributed system that provides comprehensive range library services for collections spatially indexed and graphical information. While such include digitized maps images as important special components, will involve very wide materials textual materials. Users from school children academic researchers members general public. They be able retrieve on basis information content well by reference spatial location.
Abstract The Earth System Science Server (ES3) project is developing a local infrastructure for managing science data products derived from satellite remote sensing. By ‘local,’ we mean the that scientist uses to manage creation and dissemination of her own products, particularly those are constantly incorporating corrections or improvements based on scientist's research. Therefore, in addition being robust capacious enough support public access, ES3 intended be flexible idiosyncratic...
Earth scientists are increasingly experiencing difficulties with analyzing rapidly growing volumes of complex data. Those who must perform analysis directly on low-level National Aeronautics and Space Administration (NASA) Moderate Resolution Imaging Spectroradiometer (MODIS) Level 1B calibrated geolocated data, for example, encounter an arcane, high-volume data set that is burdensome to make use of. Instead, typically opt higher-level "canned" products provided by NASA. However, when these...
Using database views to define citable units is the key specifying and generating citations data.
The Alexandria Digital Earth ProtoType (ADEPT) architecture is a framework for building distributed digital libraries of georeferenced information. An ADEPT system comprises one or more autonomous libraries, each which provides uniform interface to collections, manages metadata items. primary standard on the based bucket framework, defines client-level query services that are compatible with heterogeneous underlying collections. functionality strikes balance between simplicity Web document...
As peer-to-peer dissemination of custom data products evolves among Earth science research groups, investigators and managers must consider how to compose appropriate metadata for their computing activities. Because workflows may span multiple it is critical that lineage (provenance) also be assembled document preserve the origins processing history constituent transformations future consumers. To demonstrate methods composing processing, we introduce our terminology workflow employ a case...
Environmental informatics uses large multidimensional, complex datasets to study environmental problems, which can be both discrete and continuous in space or time. These their requisite metadata managed by queryable databases. Geospatial Web application programming interfaces (APIs) provide remote access dynamic subsets of information. Persistent identifiers make data citable. The storage-computing trade-off is now heavily skewed favor moving calculations the data. Provenance help determine...
The Alexandria Digital Library (ADL) is one of the six digital library projects funded by NSF, DARPA, and NASA. ADL's collection services focus on information containing georeferences: maps, images, data sets, text, other sources with links to geographic locations. During this study period, three different user interfaces were developed tested groups. User feedback was collected through various formal informal approaches results fed back into design implementation cycle. This article...
This project investigates the energy-water usage efficiency of large scale civil infrastructure projects involving artificial recharge subsurface groundwater aquifers via reuse treated municipal wastewater. A modeling framework is introduced which explores various ways in spatially heterogeneous variables such as topography, landuse, and infiltration capacity combine to determine physical layout proposed system components their associated process demands. applied planning evaluation...
Abstract Earth system models synthesize the science of interactions amongst multiple biophysical and, increasingly, human processes across a wide range scales. Ecohydrologic are subset earth that focus particularly on complex between ecosystem and storage flux water. often at scales where direct observations occur: plots, hillslopes, streams, watersheds, as well land resource management decisions implemented. These complement field‐based data‐driven by combining theory, empirical...
Computational provenance—a record of the antecedents and processing history digital information—is key to properly documenting computer-based scientific research. To support investigations in hydrologic science, we produce daily fractional snow-covered area from NASA's moderate-resolution imaging spectroradiometer (MODIS). From MODIS reflectance data seven wavelengths, estimate fraction each 500 m pixel that snow covers. The products have gaps errors because cloud cover sensor viewing...