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A Study on the Air to Water Interfac...

Porraz, Julianna.

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A Study on the Air to Water Interface: CO2 Flux Rate from Uvas Reservoir Located in a Mediterranean Climatic Region.

Record Type:	Electronic resources : Monograph/item
Title/Author:	A Study on the Air to Water Interface: CO2 Flux Rate from Uvas Reservoir Located in a Mediterranean Climatic Region./
Author:	Porraz, Julianna.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
Description:	70 p.
Notes:	Source: Masters Abstracts International, Volume: 85-02.
Contained By:	Masters Abstracts International85-02.
Subject:	Biogeochemistry. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30522452
ISBN:	9798380038638

A Study on the Air to Water Interface: CO2 Flux Rate from Uvas Reservoir Located in a Mediterranean Climatic Region.
Porraz, Julianna.

A Study on the Air to Water Interface: CO2 Flux Rate from Uvas Reservoir Located in a Mediterranean Climatic Region. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 70 p.

Source: Masters Abstracts International, Volume: 85-02.

Thesis (M.S.)--University of California, Davis, 2023.

Freshwater reservoirs are hotspots for methane (CH4) and carbon dioxide (CO2) fluxes released into the atmosphere; however, there is little knowledge about CO2 flux rates from reservoirs in Mediterranean climate regions. Studies show that reservoirs can either emit or absorb CO2, depending on the season and time of day. The goal of this study was to analyze CO2 and gain knowledge of the temporal variability of CO2 fluxes at Uvas Reservoir, Santa Clara County, California, in a Mediterranean climate zone. Results showed a strong diel variability of CO2, with negative flux rates (CO2 sinks) generally occurring during the nighttime. For example, in June 2021 at Uvas Reservoir, CO2 emissions decreased from -0.27 mg m-2 h-1 to -0.48 mg m-2 h-1 at night. These fluxes were also variable seasonally, where positive values (CO2 sources) in CO2 flux rates occurred during fall turnover, with a peak flux rate calculated at +1.57 mg m-2 h-1 in the daytime. This example from the fall season occurred after the reservoir had used up all the nutrients and when algae were decomposing. Lastly, the CO2 surface gas flux results from Uvas Reservoir were compared to other freshwater reservoirs within the same climatic region, different climatic regions, and other land classification types. This comparative analysis showed that Uvas Reservoir had 20% and 6.2% higher CO2 flux rates compared to a tropical climate and a temperate climate in a dry year, respectively.

ISBN: 9798380038638Subjects--Topical Terms:

545717
Biogeochemistry.
Subjects--Index Terms:

Carbon cycle

A Study on the Air to Water Interface: CO2 Flux Rate from Uvas Reservoir Located in a Mediterranean Climatic Region.
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020 $a 9798380038638
035 $a (MiAaPQ)AAI30522452
035 $a AAI30522452
035 $a 2402010
040 $a MiAaPQ $c MiAaPQ
100 1 $a Porraz, Julianna. $3 3772226
245 1 2 $a A Study on the Air to Water Interface: CO2 Flux Rate from Uvas Reservoir Located in a Mediterranean Climatic Region.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 70 p.
500 $a Source: Masters Abstracts International, Volume: 85-02.
500 $a Advisor: Oldroyd, Holly J.
502 $a Thesis (M.S.)--University of California, Davis, 2023.
520 $a Freshwater reservoirs are hotspots for methane (CH4) and carbon dioxide (CO2) fluxes released into the atmosphere; however, there is little knowledge about CO2 flux rates from reservoirs in Mediterranean climate regions. Studies show that reservoirs can either emit or absorb CO2, depending on the season and time of day. The goal of this study was to analyze CO2 and gain knowledge of the temporal variability of CO2 fluxes at Uvas Reservoir, Santa Clara County, California, in a Mediterranean climate zone. Results showed a strong diel variability of CO2, with negative flux rates (CO2 sinks) generally occurring during the nighttime. For example, in June 2021 at Uvas Reservoir, CO2 emissions decreased from -0.27 mg m-2 h-1 to -0.48 mg m-2 h-1 at night. These fluxes were also variable seasonally, where positive values (CO2 sources) in CO2 flux rates occurred during fall turnover, with a peak flux rate calculated at +1.57 mg m-2 h-1 in the daytime. This example from the fall season occurred after the reservoir had used up all the nutrients and when algae were decomposing. Lastly, the CO2 surface gas flux results from Uvas Reservoir were compared to other freshwater reservoirs within the same climatic region, different climatic regions, and other land classification types. This comparative analysis showed that Uvas Reservoir had 20% and 6.2% higher CO2 flux rates compared to a tropical climate and a temperate climate in a dry year, respectively.
590 $a School code: 0029.
650 4 $a Biogeochemistry. $3 545717
650 4 $a Aquatic sciences. $3 3174300
650 4 $a Environmental engineering. $3 548583
653 $a Carbon cycle
653 $a CO2 flux rates
653 $a Freshwater reservoirs
653 $a Uvas Reservoir
653 $a Mediterranean climate
690 $a 0425
690 $a 0792
690 $a 0775
710 2 $a University of California, Davis. $b Civil and Environmental Engineering. $3 1671151
773 0 $t Masters Abstracts International $g 85-02.
790 $a 0029
791 $a M.S.
792 $a 2023
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30522452