Interannual Variations of Water and Carbon Dioxide Fluxes over a Semiarid Alpine Steppe on the Tibetan Plateau

Table 1

Variables, instruments, and measurement heights.

Variables	Instruments	Measurement heights [m]
Temperature	HMP45C, Campbell	2, 4, 10
Relative humidity	HMP45C, Campbell	2, 4, 10
Wind speed	010C, Campbell	2, 4, 10
Wind direction	020C, Campbell	10
Net radiation	CNR4, Kipp & Zonen	1.5
PAR	LI190SB, LI-COR	1.5
Soil heat flux	HFP01, Hukseflux	0.05, 0.1 (depth)
Soil temperature	109-L, Campbell	0.05, 0.1, 0.2, 0.5, 1 (depth)
Soil water content	CS616, Campbell	0.05, 0.1, 0.2, 0.5, 1 (depth)
Precipitation	52202, Young	—