東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁 到查詢結果 [ null ]

切換: 標籤 | MARC模式 | ISBD

Quantifying and Understanding Reacti...

Fredrickson, Carley.

FindBook

Google Book

Amazon

博客來

Quantifying and Understanding Reactive Nitrogen Emissions and Chemistry From Wildfires Through Remote Sensing and Modeling.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Quantifying and Understanding Reactive Nitrogen Emissions and Chemistry From Wildfires Through Remote Sensing and Modeling./
作者:	Fredrickson, Carley.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2024,
面頁冊數:	122 p.
附註:	Source: Dissertations Abstracts International, Volume: 85-10, Section: B.
Contained By:	Dissertations Abstracts International85-10B.
標題:	Ecology. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30995014
ISBN:	9798382214986

Quantifying and Understanding Reactive Nitrogen Emissions and Chemistry From Wildfires Through Remote Sensing and Modeling.
Fredrickson, Carley.

Quantifying and Understanding Reactive Nitrogen Emissions and Chemistry From Wildfires Through Remote Sensing and Modeling. - Ann Arbor : ProQuest Dissertations & Theses, 2024 - 122 p.

Source: Dissertations Abstracts International, Volume: 85-10, Section: B.

Thesis (Ph.D.)--University of Washington, 2024.

Wildfires constitute a substantial source of reactive nitrogen to the atmosphere, contributing 11% to 26% of global annual nitrogen oxide (NOx = NO + NO2) emissions to the atmosphere. While NOx is regularly included in biomass burning emission inventories, it is rare for nitrous acid (HONO) to be included. Lacking this source of reactive nitrogen may be detrimental to our representation and understanding of wildfire smoke chemistry, as at least 50% of hydroxyl radicals (OH) from wildfires have been estimated to originate from HONO. This work characterizes and constrains NOx and HONO emissions from wildfires using ultraviolet and visible differential optical absorption spectroscopy (DOAS) from the Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) aircraft campaign and from the Sentinel-5P TROPOspheric Monitoring Instrument (TROPOMI).In this dissertation, I show high-resolution airborne retrievals of HONO and NO2 from the Sheridan Fire during FIREX-AQ and calculate the emission rate and lifetime of both chemical species over the course of a daily burn using 1-dimensional line densities. To reproduce the 1-dimensional line densities of HONO and NO2, an emissions and transport model required Gaussian emissions that scaled with the diurnal fire radiative power (FRP) profile. I find HONO and NO2 lifetimes of 15 to 27 minutes and 15 to 45 minutes, respectively. Additionally, I find HONO and NO2 emission rates of 0.6 to 1.35 x 1025 molec/s and 2.0 to 5.5 x 1025 molec/s respectively.TROPOMI became operational in 2018, making it available to observe the extreme Australian wildfire season during the austral summer of 2019-2020, termed the Australian Black Summer. Using these satellite observations, I further show that the ratio of HONO to NO2 increases linearly with fire radiative power (FRP) with a slope of 1.0 (±0.2) x 10-3 MW-1 and an R2 over 0.98 and is dependent on the fuel that is burning. This suggests that the calculation of HONO emissions in FRP-based biomass burning emission inventories should scale with FRP.

ISBN: 9798382214986Subjects--Topical Terms:

516476
Ecology.
Subjects--Index Terms:

Emissions

Quantifying and Understanding Reactive Nitrogen Emissions and Chemistry From Wildfires Through Remote Sensing and Modeling.
LDR:03259nmm a2200385 4500 001 2428066
005 20241210085355.5
006 m o d
007 cr#unu||||||||
008 261011s2024 ||||||||||||||||| ||eng d
020 $a 9798382214986
035 $a (MiAaPQ)AAI30995014
035 $a AAI30995014
040 $a MiAaPQ $c MiAaPQ
100 1 $a Fredrickson, Carley. $3 3815107
245 1 0 $a Quantifying and Understanding Reactive Nitrogen Emissions and Chemistry From Wildfires Through Remote Sensing and Modeling.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2024
300 $a 122 p.
500 $a Source: Dissertations Abstracts International, Volume: 85-10, Section: B.
500 $a Advisor: Thornton, Joel A.
502 $a Thesis (Ph.D.)--University of Washington, 2024.
520 $a Wildfires constitute a substantial source of reactive nitrogen to the atmosphere, contributing 11% to 26% of global annual nitrogen oxide (NOx = NO + NO2) emissions to the atmosphere. While NOx is regularly included in biomass burning emission inventories, it is rare for nitrous acid (HONO) to be included. Lacking this source of reactive nitrogen may be detrimental to our representation and understanding of wildfire smoke chemistry, as at least 50% of hydroxyl radicals (OH) from wildfires have been estimated to originate from HONO. This work characterizes and constrains NOx and HONO emissions from wildfires using ultraviolet and visible differential optical absorption spectroscopy (DOAS) from the Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) aircraft campaign and from the Sentinel-5P TROPOspheric Monitoring Instrument (TROPOMI).In this dissertation, I show high-resolution airborne retrievals of HONO and NO2 from the Sheridan Fire during FIREX-AQ and calculate the emission rate and lifetime of both chemical species over the course of a daily burn using 1-dimensional line densities. To reproduce the 1-dimensional line densities of HONO and NO2, an emissions and transport model required Gaussian emissions that scaled with the diurnal fire radiative power (FRP) profile. I find HONO and NO2 lifetimes of 15 to 27 minutes and 15 to 45 minutes, respectively. Additionally, I find HONO and NO2 emission rates of 0.6 to 1.35 x 1025 molec/s and 2.0 to 5.5 x 1025 molec/s respectively.TROPOMI became operational in 2018, making it available to observe the extreme Australian wildfire season during the austral summer of 2019-2020, termed the Australian Black Summer. Using these satellite observations, I further show that the ratio of HONO to NO2 increases linearly with fire radiative power (FRP) with a slope of 1.0 (±0.2) x 10-3 MW-1 and an R2 over 0.98 and is dependent on the fuel that is burning. This suggests that the calculation of HONO emissions in FRP-based biomass burning emission inventories should scale with FRP.
590 $a School code: 0250.
650 4 $a Ecology. $3 516476
650 4 $a Remote sensing. $3 535394
650 4 $a Atmospheric sciences. $3 3168354
653 $a Emissions
653 $a Fire radiative power
653 $a Nitrous acid
653 $a Reactive nitrogen
653 $a Wildfires
690 $a 0799
690 $a 0329
690 $a 0725
710 2 $a University of Washington. $b Atmospheric Sciences. $3 3174193
773 0 $t Dissertations Abstracts International $g 85-10B.
790 $a 0250
791 $a Ph.D.
792 $a 2024
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30995014