CASTNET 2020 4th highest daily maximum ozone concentration (2020)
2021-03-05T11:18:21.984-05:00
2021-03-05T11:18:23.144-05:00
https://www.epa.gov/castnet
Melissa Puchalski
US EPA
puchalski.melissa@epa.gov
https://www.epa.gov/castnet
<p><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>Clean Air Status and Trends Network (CASTNET) measures hourly ozone at more than 80 sites across the United States. Sites are located in rural areas, providing data to assess regulatory programs, support model development and evaluation, validate satellite measurements, report concentrations near wildfire and other rural natural and anthropogenic emissions sources, and support the National Ambient Air Quality Standards (NAAQS). Ozone data comply with the requirements in 40 CFR Parts 50, 53, and 58. Ozone concentrations from 2020 are shown at the individual CASTNET sites. The map was produced using inverse distance weighting to provide a gridded surface to show the fourth highest daily maximum rolling 8-hour average concentrations from 2020 for comparison to the 2015 ozone NAAQS, which is set at 70 ppb. </span><br /></p>
Clean Air Status and Trends Network (CASTNET) 2020 ozone concentrations
Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.0.10450
CASTNETozonedesign valuesAirUnited StatesOAROAPCAMD
2020
annual
1
-127.867860
-65.514448
23.254611
51.597571
Melissa Puchalski
US EPA
puchalski.melissa@epa.gov
https://www.epa.gov/castnet
Puchalski, M. (2021). Clean Air Status and Trends Network (CASTNET) Hourly Ozone Concentrations [Data set]. U.S. Environmental Protection Agency. https://doi.org/10.23719/1520792
2.520
Shapefile
0
19418
CASTNET Ozone 4th Highest Daily Maximum
4th Highest 8-Hour Daily Maximum ozone concentration (ppb)
CASTNET
Feature Class
19418
North American Profile of ISO19115 2003
2021-02-23
13455200
2021-03-05
11:29:06.97
FALSE
2021-02-23
13444200
1.0
NAP
editor:esri.dijit.metadata.editor
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shp_o3_4thdmax
2.520
-2354837.470340
2245162.529660
311785.807850
3171785.807850
1
Projected
GCS_North_American_1983
NAD_1983_Albers
Linear Unit: Meter (1.000000)
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dataset
2021-02-23
1614961057345r4262123478522477
US EPA
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