干旱区生态环境知识资源中心(Arid): GRiMeDB: the Global River Methane Database of concentrations and fluxes

Arid

DOI	10.5194/essd-15-2879-2023
	GRiMeDB: the Global River Methane Database of concentrations and fluxes
	Stanley, Emily H.; Loken, Luke C.; Casson, Nora J.; Oliver, Samantha K.; Sponseller, Ryan A.; Wallin, Marcus B.; Zhang, Liwei; Rocher-Ros, Gerard
通讯作者	Stanley, EH
来源期刊	EARTH SYSTEM SCIENCE DATA
ISSN	1866-3508
EISSN	1866-3516
出版年	2023
卷号	15 期号:7 页码:2879-2926
英文摘要	Despite their small spatial extent, fluvial ecosystems play a significant role in processing and transporting carbon in aquatic networks, which results in substantial emission of methane (CH4) into the atmosphere. For this reason, considerable effort has been put into identifying patterns and drivers of CH4 concentrations in streams and rivers and estimating fluxes to the atmosphere across broad spatial scales. However, progress toward these ends has been slow because of pronounced spatial and temporal variability of lotic CH4 concentrations and fluxes and by limited data availability across diverse habitats and physicochemical conditions. To address these challenges, we present a comprehensive database of CH4 concentrations and fluxes for fluvial ecosystems along with broadly relevant and concurrent physical and chemical data. The Global River Methane Database (GriMeDB; https://doi.org/10.6073/pasta/f48cdb77282598052349e969920356ef, Stanley et al., 2023) includes 24 024 records of CH4 concentration and 8205 flux measurements from 5029 unique sites derived from publications, reports, data repositories, unpublished data sets, and other outlets that became available between 1973 and 2021. Flux observations are reported as diffusive, ebullitive, and total CH4 fluxes, and GriMeDB also includes 17 655 and 8409 concurrent measurements of concentrations and 4444 and 1521 fluxes for carbon dioxide (CO2) and nitrous oxide (N2O), respectively. Most observations are date-specific (i.e., not site averages), and many are supported by data for 1 or more of 12 physicochemical variables and 6 site variables. Site variables include codes to characterize marginal channel types (e.g., springs, ditches) and/or the presence of human disturbance (e.g., point source inputs, upstream dams). Overall, observations in GRiMeDB encompass the broad range of the climatic, biological, and physical conditions that occur among world river basins, although some geographic gaps remain (arid regions, tropical regions, high-latitude and high-altitude systems). The global median CH4 concentration (0.20 mu molL 1) and diffusive flux (0.44 mmolm 2 d 1) in GRiMeDB are lower than estimates from prior site-averaged compilations, although ranges (0 to 456 mu molL 1 and 136 to 4057 mmolm 2 d 1) and standard deviations (10.69 and 86.4) are greater for this larger and more temporally resolved database. Available flux data are dominated by diffusive measurements despite the recognized importance of ebullitive and plant-mediated CH4 fluxes. Nonetheless, GriMeDB provides a comprehensive and cohesive resource for examining relationships between CH4 and environmental drivers, estimating the contribution of fluvial ecosystems to CH4 emissions, and contextualizing site-based investigations.
类型	Article
语种	英语
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:001026959600001
WOS关键词	GREENHOUSE-GAS EMISSIONS ; CARBON-DIOXIDE ; WATER-QUALITY ; CH4 ; STREAM ; DYNAMICS ; CO2 ; N2O ; IMPOUNDMENTS ; PATTERNS
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395881
推荐引用方式 GB/T 7714	Stanley, Emily H.,Loken, Luke C.,Casson, Nora J.,et al. GRiMeDB: the Global River Methane Database of concentrations and fluxes[J],2023,15(7):2879-2926.
APA	Stanley, Emily H..,Loken, Luke C..,Casson, Nora J..,Oliver, Samantha K..,Sponseller, Ryan A..,...&Rocher-Ros, Gerard.(2023).GRiMeDB: the Global River Methane Database of concentrations and fluxes.EARTH SYSTEM SCIENCE DATA,15(7),2879-2926.
MLA	Stanley, Emily H.,et al."GRiMeDB: the Global River Methane Database of concentrations and fluxes".EARTH SYSTEM SCIENCE DATA 15.7(2023):2879-2926.