MARC보기
LDR02521nmm uu200445 4500
001000000332766
00520240805171539
008181129s2018 |||||||||||||||||c||eng d
020 ▼a 9780438031548
035 ▼a (MiAaPQ)AAI10810224
035 ▼a (MiAaPQ)umn:19113
040 ▼a MiAaPQ ▼c MiAaPQ ▼d 248032
0820 ▼a 551.5
1001 ▼a Chen, Zichong.
24510 ▼a Top-down Constraints on Regional Nitrous Oxide and Methane Emissions within the U.S. Corn Belt.
260 ▼a [S.l.] : ▼b University of Minnesota., ▼c 2018
260 1 ▼a Ann Arbor : ▼b ProQuest Dissertations & Theses, ▼c 2018
300 ▼a 143 p.
500 ▼a Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
500 ▼a Adviser: Timothy J. Griffis.
5021 ▼a Thesis (Ph.D.)--University of Minnesota, 2018.
520 ▼a Nitrous oxide (N2O) and methane (CH4) are important long-lived greenhouse gases. However, evidence has been found that CH 4 and N2O emissions from the US Corn Belt are much larger than budgeted for in the most up-to-date emission inventories, im
520 ▼a Therefore, this dissertation sought to: 1) quantify importance of direct versus indirect N2O emissions, and explore their seasonality and regional budgets
520 ▼a We compared in-situ measurements of N2O from the University of Minnesota tall tower site with a time-inverted transport model and a scale factor Bayesian inverse (SFBI) method. Our analysis suggested an upward adjustment of the emission factor o
520 ▼a With respect to CH4, our analysis revealed that the anthropogenic source (7.8 +/-1.6 Tg CH4 yr-1) was 1.5 times greater than accounted for in the EPA inventory. Most prominently livestock and oil/gas sources were underestimated by 1.8- and 1.3-f
520 ▼a Our findings suggest that indirect N2O and anthropogenic CH4 emissions within the Corn Belt Region need to be upward-adjusted in inventory updates. Further, our model predictions indicate large N2O mitigation potential in the lower Midwest regio
590 ▼a School code: 0130.
650 4 ▼a Atmospheric sciences.
650 4 ▼a Climate change.
690 ▼a 0725
690 ▼a 0404
71020 ▼a University of Minnesota. ▼b Land and Atmospheric Science.
7730 ▼t Dissertation Abstracts International ▼g 79-10B(E).
773 ▼t Dissertation Abstract International
790 ▼a 0130
791 ▼a Ph.D.
792 ▼a 2018
793 ▼a English
85640 ▼u http://www.riss.kr/pdu/ddodLink.do?id=T14997927 ▼n KERIS
980 ▼a 201812 ▼f 2019
990 ▼a 관리자