Research Article

Simulation and Analysis of Land-Surface Processes in the Taklimakan Desert Based on Noah LSM

Table 1

Equipment and parameters of the land-air interactive observation system at the Tazhong station.

ItemHeight or depth (m)Sensor typeMain parameters of the instrument or equipment

Wind speed0.5, 1, 2, 4, 10Met One 010CMeasurement range: 0–60 m·s−1, start-up wind speed: 0.22 m·s−1, accuracy: ±1% (0.3 m·s−1), operating temperature: −50 to 65°C
Wind direction2, 10Met One 020CMeasurement range: 0–360°, start-up wind speed: 0.22 m·s−1, accuracy: ±1%, operating temperature: −50 to 65°C
Air temperature and humidity0.5, 1, 2, 4, 10Vaisala HMP45DMeasurement range: −40 to 60°C, accuracy: ±0.2°C (20°C), RH: 0–100%
Soil temperature−0.05, −0.1, −0.15, −0.2, −0.4Campbell 109LMeasurement range: −40 to 100°C, accuracy: ±0.2°C (0–70°C), ±0.5°C (−50°C)
Soil humidity−0.025, −0.1, −0.2, −0.4Campbell CS616Measurement range: 0.05% VWC, resolution: 0.1% VWC
Soil heat flux−0.025, −0.5, −0.8Hukseflux HFP01Sensitivity: 50 µV·W−1·m−2, accuracy: ≤3%, temperature range: −30 to 70°C
Wind fluctuation3Campbell CSAT3Wind speed range: 0–30 m·s−1, accuracy: Ux, Uy <±4.0 cm·s−1 and Uz <±2.0 cm·s−1, resolution: Ux and Uy is 0.01 m·s−1 and Uz is 0.005 m·s−1, sound speed: 0.01 m·s−1
CO2/H2O fluctuation3LI-COR 7500Sampling frequency: 20 Hz, measuring range: CO2 is 0∼5000 mg·m−3, H2O is 0–42 g·m−3
Shortwave and longwave radiation1.5Kipp & Zonen CNR-1CM3: response time: 18 s, linear error: <25 W·m−2, spectral range: 305–2800 nm, accuracy of daily exposure: ±10%, CG3: response time: 18 s, linear error: <25 W·m−2, spectral range: 50–500 nm, accuracy: ±10%, operating temperature: −40 to 70°C