气候变化领域集成服务门户(CCPortal): A long-term (2005-2019) eddy covariance data set of CO2 and H2O fluxes from the Tibetan alpine steppe

CCPortal

DOI	10.5194/essd-12-2705-2020
	A long-term (2005-2019) eddy covariance data set of CO2 and H2O fluxes from the Tibetan alpine steppe
	Nieberding, Felix; Wille, Christian; Fratini, Gerardo; Asmussen, Magnus O.; Wang, Yuyang; Ma, Yaoming; Sachs, Torsten
通讯作者	Nieberding, F (通讯作者)
发表日期	2020
ISSN	1866-3508
EISSN	1866-3516
起始页码	2505
结束页码	2524
卷号	12 期号:4
英文摘要	The Tibetan alpine steppe ecosystem covers an area of roughly 800 000 km(2) and contains up to 3.3% soil organic carbon in the uppermost 30 cm, summing up to 1.93 Pg C for the Tibet Autonomous Region only (472 037 km(2)). With temperatures rising 2 to 3 times faster than the global average, these carbon stocks are at risk of loss due to enhanced soil respiration. The remote location and the harsh environmental conditions on the Tibetan Plateau (TP) make it challenging to derive accurate data on the ecosystem-atmosphere exchange of carbon dioxide (CO2) and water vapor (H2O). Here, we provide the first multiyear data set of CO2 and H2O fluxes from the central Tibetan alpine steppe ecosystem, measured in situ using the eddy covariance technique. The calculated fluxes were rigorously quality checked and carefully corrected for a drift in concentration measurements. The gas analyzer self-heating effect during cold conditions was evaluated using the standard correction procedure and newly revised formulations (Burba et al., 2008; Frank and Massman, 2020). A wind field analysis was conducted to identify influences of adjacent buildings on the turbulence regime and to exclude the disturbed fluxes from subsequent computations. The presented CO2 fluxes were additionally gap filled using a standardized approach. The very low net carbon uptake across the 15-year data set highlights the special vulnerability of the Tibetan alpine steppe ecosystem to become a source of CO2 due to global warming. The data are freely available at https://doi.org/10.5281/zenodo.3733202 (Nieberding et al., 2020a) and https://doi.org/10.11888/Meteoro.tpdc.270333 (Nieberding et al., 2020b) and may help us to better understand the role of the Tibetan alpine steppe in the global carbon-climate feedback.
关键词	NET ECOSYSTEM EXCHANGE CARBON-DIOXIDE MEADOW WATER TEMPERATURE QUALITY ENERGY PATH UNCERTAINTY CONSEQUENCES
语种	英语
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000592253900001
来源期刊	EARTH SYSTEM SCIENCE DATA
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260013
推荐引用方式 GB/T 7714	Nieberding, Felix,Wille, Christian,Fratini, Gerardo,et al. A long-term (2005-2019) eddy covariance data set of CO2 and H2O fluxes from the Tibetan alpine steppe[J]. 中国科学院青藏高原研究所,2020,12(4).
APA	Nieberding, Felix.,Wille, Christian.,Fratini, Gerardo.,Asmussen, Magnus O..,Wang, Yuyang.,...&Sachs, Torsten.(2020).A long-term (2005-2019) eddy covariance data set of CO2 and H2O fluxes from the Tibetan alpine steppe.EARTH SYSTEM SCIENCE DATA,12(4).
MLA	Nieberding, Felix,et al."A long-term (2005-2019) eddy covariance data set of CO2 and H2O fluxes from the Tibetan alpine steppe".EARTH SYSTEM SCIENCE DATA 12.4(2020).