File Geodatabase Feature Class
Tags
eutrophication, University of California - Riverside, environment, California, nitrogen deposition, Nevada, biodiversity, Center for Conservation Biology, College of Engineering - Center for Environmental Research & Technology, CMAQ, Biocomplexity Project
Provides a geography of annual nitrogen deposition throughout most of the state of California including locations where there are no measurement data. Supports study of effect of anthropogenic nitrogen on the structure and function of terrestrial ecosystems.
CMAQ modeled total nitrogen deposition for California during 2002. Data are provided at two resolutions (4 and 36 kilometers) that were produced from different CMAQ model runs. The 4km resolution data extent covers the majority of the state. 36km data are provided only in those areas within California that were outside the 4km modeled extent. Some of the 36km polygons along the contact with the 4km data and the state line are truncated. Deposition values do not always make a smooth transition from 4 to 36km resolution. The deposition value for each cell is recorded as value in units of kilograms of nitrogen per hectare per year. CMAQ modeling supervised by Gail Tonnesen (UCR/Bourn College Of Engineering/Center for Environmental Reasearch and Technology). CMAQ modeling was conducted during 2006. Cartography by Robert Johnson (UCR, Center for Conservation Biology) and funded by NSF through the Biocomplexity Project.
CMAQ model dataset produced by UCR/CE-CERT personnel (Gail Tonnesen et al.); UCR/CCB GIS conversion: Robert F. Johnson; UCR/CCB project management: Edith Allen.
Disclaimer : The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.
Individuals and institutions utilizing these data are requested to acknowledge the authors and report (below) in any publication in which these data are mentioned: Tonnesen, G., Z. Wang, M. Omary, and C. J. Chien. 2007. Assessment of Nitrogen Deposition: Modeling and Habitat Assessment. California Energy Commission, PIER Energy-Related Environmental Research. CEC-500-2006-032. http://www.energy.ca.gov/publications/displayOneReport.php?pubNum=CEC-500-2006-032 It is the user's responsibility to understand the specific characteristics and limitations of the dataset. The Center for Environmental Research and Technology and the Center for Conservation Biology expressly disclaim responsibility for damages or liability that may arise from use of this data.
Extent
| West | -124.483791 | East | -113.503614 |
| North | 42.044816 | South | 32.424168 |
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:150,000,000 |
Disclaimer : The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.
Individuals and institutions utilizing these data are requested to acknowledge the authors and report (below) in any publication in which these data are mentioned: Tonnesen, G., Z. Wang, M. Omary, and C. J. Chien. 2007. Assessment of Nitrogen Deposition: Modeling and Habitat Assessment. California Energy Commission, PIER Energy-Related Environmental Research. CEC-500-2006-032. http://www.energy.ca.gov/publications/displayOneReport.php?pubNum=CEC-500-2006-032 It is the user's responsibility to understand the specific characteristics and limitations of the dataset. The Center for Environmental Research and Technology and the Center for Conservation Biology expressly disclaim responsibility for damages or liability that may arise from use of this data.