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Record Details

Record 1 of 13591
Tropospheric Ozonesonde Profiles at Long-Term U.S. Monitoring Sites: 2. Links Between Trinidad Head, CA, Profile Clusters and Inland Surface Ozone Measurements
External Online Source: doi:10.1002/2016JD025254
Author and Affiliation:
Stauffer, Ryan M.(Maryland Univ., USRA, College Park, MD, United States)
Thompson, Anne M.(NASA Goddard Space Flight Center, Greenbelt, MD United States)
Oltmans, Samual J.(Colorado Univ., Boulder, CO, United States)
Johnson, Bryan J.(National Oceanic and Atmospheric Administration, Boulder, CO, United States)
Abstract: Much attention has been focused on the transport of ozone (O3) to the western U.S., particularly given the latest revision of the National Ambient Air Quality Standard to 70 parts per billion by volume (ppbv) of O3. This makes quantifying the contributions of stratosphere-to-troposphere exchange, local pollution, and pollution transport to this region essential. To evaluate free-tropospheric and surface O3 in the western U.S., we use self-organizing maps to cluster 18 years of ozonesonde profiles from Trinidad Head, CA. Three of nine O3 mixing ratio profile clusters exhibit thin laminae of high O3 above Trinidad Head. The high O3 layers are located between 1 and 6 km above mean sea level and reside above an inversion associated with a northern location of the Pacific subtropical high. Ancillary data (reanalyses, trajectories, and remotely sensed carbon monoxide) help identify the high O3 sources in one cluster, but distinguishing mixed influences on the elevated O3 in other clusters is difficult. Correlations between the elevated tropospheric O3 and surface O3 at high-altitude monitors at Lassen Volcanic and Yosemite National Parks, and Truckee, CA, are marked and long lasting. The temporal correlations likely result from a combination of transport of baseline O3 and covarying meteorological parameters. Days corresponding to the high O3 clusters exhibit hourly surface O3 anomalies of +5-10 ppbv compared to a climatology; the positive anomalies can last up to 3 days after the ozonesonde profile. The profile and surface O3 links demonstrate the importance of regular ozonesonde profiling at Trinidad Head.
Publication Date: Jan 16, 2017
Document ID:
20170000991
(Acquired Feb 09, 2017)
Subject Category: ENVIRONMENT POLLUTION; EARTH RESOURCES AND REMOTE SENSING
Report/Patent Number: GSFC-E-DAA-TN39008
Document Type: Journal Article
Publication Information: Journal of Geophysical Research: Atmospheres (ISSN 2169-897X); Volume 122; Issue 1; (SEE 20170004540)
Publisher Information: AGU Publications
Contract/Grant/Task Num: NNH15CO48B; NNG05GO62G; NNX10AR39G; NNX11AQ44G; NNX12AF05G
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD United States
NASA; Washington, DC, United States
NASA Langley Research Center; Hampton, VA, United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD United States
Description: 20p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AIR POLLUTION; AIR QUALITY; ATMOSPHERIC COMPOSITION; CLUSTER ANALYSIS; DATA PROCESSING; ENVIRONMENTAL MONITORING; OZONE; OZONESONDES; OZONOMETRY; REMOTE SENSING; STRATOSPHERE; TROPOSPHERE; BALLOON-BORNE INSTRUMENTS; CALIFORNIA; GAS TRANSPORT; MAPPING; METEOROLOGICAL PARAMETERS; MIXING RATIOS; POLLUTION MONITORING; POLLUTION TRANSPORT
Other Descriptors: TROPOSPHERIC OZONE; SURFACE OZONE; OZONESONDES; SELF-ORGANIZING MAPS; POLLUTION; STE
Availability Source: Other Sources
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