University of California - Riverside, College of Engineering, Center for Environmental Research & Technology 20130311 vector digital data https://www.wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/700_799/ds781.zip 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. 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. 20020101 ground condition Complete None planned -124.483791 -113.503614 42.044816 32.424168 None eutrophication University of California - Riverside nitrogen deposition biodiversity Center for Conservation Biology College of Engineering - Center for Environmental Research & Technology CMAQ Biocomplexity Project ISO 19115 Topic Category environment None California Nevada None. Unrestricted. 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. University of California - Riverside, Bourns College of Engineering Gail Tonnesen Assistant Research Engineer mailing

1084 Columbia Ave.

Riverside CA 92507 US (951) 781-5676 (951) 781-5790 tonnesen@mail.cert.ucr.edu 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. Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 Vector GT-polygon composed of chains 17093 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.0001 0.0001 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds781 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features. kgN_ha_yr kilograms of nitrogen deposited per hectare per year hectares area of polygon in hectares source_res source data's CMAQ model output resolution Shape_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. Shape_Area Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. 20220412 University of California - Riverside, Center for Conservation Biology Robert F. Johnson Assistant Specialist / GIS mailing

1303 Webber Hall

University of California

Riverside California 92521-0334 US (951) 827-4005 (951) 827-2620 robert.johnson@ucr.edu 8 am - 5 pm, M - F FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time