气候变化领域集成服务门户(CCPortal): Methane and nitrous oxide emissions and continuous meteorological observations from a subtropical coastal embayment (Moreton Bay, Australia)

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.832905
	Methane and nitrous oxide emissions and continuous meteorological observations from a subtropical coastal embayment (Moreton Bay, Australia)
	Musenze; Ronald; Ursula; Werner; Grinham; Alistair; Udy; James; Yuan; Zhiguo
发布日期	2015-05-22
数据集类型	dataset
英文简介	Surface water methane (CH4) and nitrous oxide (N2O) concentrations and fluxes were investigated in two subtropical coastal embayments (Bramble Bay and Deception Bay, which are part of the greater Moreton Bay, Australia). Measurements were done at 23 stations in seven campaigns covering different seasons during 2010-2012. Water-air fluxes were estimated using the Thin Boundary Layer approach with a combination of wind and currents-based models for the estimation of the gas transfer velocities. The two bays were strong sources of both CH4 and N2O with no significant differences in the degree of saturation of both gases between them during all measurement campaigns. Both CH4 and N2O concentrations had strong temporal but minimal spatial variability in both bays. During the seven seasons, CH4 varied between 500% and 4000% saturation while N2O varied between 128 and 255% in the two bays. Average seasonal CH4 fluxes for the two bays varied between 0.5±0.2 and 6.0±1.5 mg CH4/m2/day while N2O varied between 0.4±0.1 and 1.6±0.6 mg N2O/m2/day. Weighted emissions (t CO2-e) were 63%-90% N2O dominated implying that a reduction in N2O inputs and/or nitrogen availability in the bays may significantly reduce the bays' greenhouse gas (GHG) budget. Emissions data for tropical and subtropical systems is still scarce. This work found subtropical bays to be significant aquatic sources of both CH4 and N2O and puts the estimated fluxes into the global context with measurements done from other climatic regions.
空间范围	Median Latitude: -27.214802 * Median Longitude: 153.089195 * South-bound Latitude: -27.285000 * West-bound Longitude: 153.073700 * North-bound Latitude: -27.160000 * East-bound Longitude: 153.092200
时间范围	2010-01-01T00:00:00 - 2012-03-29T07:30:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215505
推荐引用方式 GB/T 7714	Musenze,Ronald,Ursula,et al. Methane and nitrous oxide emissions and continuous meteorological observations from a subtropical coastal embayment (Moreton Bay, Australia).2015-05-22.https://doi.org/10.1594/PANGAEA.832905.