Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Daxing site - eddy covariance system) (2008-2010)

The dataset contains vortex correlator observation data from January 1, 2008, solstice, December 31, 2010.The station is located in weishanzhuang, daxing district, Beijing.The latitude and longitude of the observation point are 116.4271E, 39.6213N and 20m above sea level.

The acquisition frequency of the eddy correlates instrument is 10Hz, the frame height is 3m, the ultrasonic direction is 295 ° (due north direction is 0 °), and the distance between the ultrasonic anemometer and the CO2/H2O analyzer is 18cm.The published data is the 30-minute data obtained by the post-processing of the original collected 10Hz data with Edire software. The main steps of the processing include: outfield value elimination, delay time correction, coordinate rotation (plane fitting), frequency response correction, ultrasonic virtual temperature correction and density (WPL) correction.Quality assessment for each intercompared to at the same time, mainly is the atmospheric stability (Δ st) and turbulent characteristics of similarity (ITC) test.The 30min pass value output by Edire software was also screened :(1) the data when the instrument was wrong was removed;(2) data of 1h before and after precipitation were excluded;(3) the missing rate of 10Hz original data is more than 3% every 30min;(4) the observed data of weak turbulence at night were excluded (u* less than 0.1m/s).The average period of observation data was 30 minutes, 48 data a day, and the missing data was marked as -6999.

The observation data released by vortex correlator include:Date/Time for the Date/Time, wind Wdir (°), Wnd horizontal wind speed (m/s), standard deviation Std_Uy lateral wind speed (m/s), ultrasonic virtual temperature Tv (℃), the water vapor density H2O (g/m3), carbon dioxide concentration CO2 (mg/m3), friction velocity Ustar) (m/s), the length of cloth hoff, sensible heat flux Hs (W/m2), latent heat flux LE (W/m2), carbon dioxide flux Fc (mg/(m2s)), the quality of the sensible heat flux identifier QA_Hs, the quality of the latent heat flux identifier QA_LE,Carbon dioxide flux mass identification QA_Fc.The quality of the sensible heat and latent heat, carbon dioxide flux identification is divided into nine grades (quality logo 1: (0 < Δ st < 15, 0 < ITC < 30);2: (16 < < 30, 0 < ITC Δ st < 30);3: (0 < Δ st < 30, 31 < ITC < 75);4: (31 < < 75, 0 < ITC Δ st < 30);5: (0 < Δ st < 75, 31 < ITC < 100);6 (76 < < 100, ITC Δ st < 100);7: (Δ st < 250, ITC < 250);8: (Δ st < 1000, ITC < 1000);The rest are 9).The meaning of data time, such as 0:30 represents the average between 0:00 and 0:30;The data is stored in *.xls format.

Please refer to Jia et al,(2012) for information of observation test or site, and Liu et al,(2013) for data processing.

Data file naming and use method

File naming method: **** site-###, where **** * represents the site name, ### represents the type of observation instrument
Data usage: this data is tabular data, which can be opened and viewed by WPS, Ecxel and other software

Required Data Citation View Data Cite Help About Data Citation
Cite as:

LIU Shaomin, XU Ziwei. Multi-scale surface flux and meteorological elements observation dataset in the Hai River Basin (Daxing site - eddy covariance system) (2008-2010). National Tibetan Plateau Data Center, 2016. doi: 10.3972/haihe.005.2013.db. (Download the reference: RIS | Bibtex )

Related Literatures:

1. Liu, S.M., Xu, Z.W., Zhu, Z.L., Jia, Z.Z., & Zhu, M.J. (2013). Measurements of evapotranspiration from eddy-covariance systems and large aperture scintillometers in the Hai River Basin, China. Journal of Hydrology, 487, 24-38.( View Details | Download | Bibtex)

2. Jia, Z.Z., Liu, S.M., Xu, Z.W,, Chen, Y.J., & Zhu, M.J. (2012). Validation of remotely sensed evapotranspiration over the Hai River Basin, China. Journal of Geophysical Research, 117(D13).( View Details | Download | Bibtex)

Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.

References literature

1.Liu, S.M., Lu, L., Mao, D., & Jia, L. (2007). Evaluating parameterizations of aerodynamic resistance to heat transfer using field measurements. Hydrology and Earth System Sciences, 11(2), 769-283. (View Details | Download )

2.Liu, S.M., Xu, Z.W., Wang, W.Z., Bai, J., Jia, Z., Zhu, M., & Wang, J.M. (2011). A comparison of eddy-covariance and large aperture scintillometer measurements with respect to the energy balance closure problem. Hydrology and Earth System Sciences, 15(4), 1291-1306. doi:10.5194/hess-15-1291-2011. (View Details | Download )

3.Lu, L., Liu, S.M., Xu, Z.W., Yang, K., Cai, X.H., Jia, L., & Wang, J.M. (2009). The characteristics and parameterization of aerodynamic roughness length over heterogeneous surfaces. Advances in atmospheric sciences, 26(1), 180-190. (View Details | Download )

4.Liu, S.M., Hu, G., Lu, L., & Mao, D.F. (2007). Estimation of regional evapotranspiration by TM/ETM+ data over heterogeneous surfaces. Photogrammetric engineering & Remote sensing, 73(10), 1169-1178. (View Details | Download )

5.Xu, T.R., Liu, S.M., Xu, Z.W., Liang, S.L., Xu, L. (2015). A dual-pass data assimilation scheme for estimating surface fluxes with FY3A-VIRR land surface temperature. Sci. China Earth Sci., 58(2), 211-230, doi: 10.1007/s11430-014-4964-7. (View Details | Download )

6.Xu, T., Liu, S., Xu, L., Chen, Y., Jia, Z., Xu, Z., Nielson, J. (2015). Temporal Upscaling and Reconstruction of Thermal Remotely Sensed Instantaneous Evapotranspiration. Remote Sensing. 7(3), 3400-3425. doi:10.3390/rs70303400. (View Details | Download )

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Geographic coverage
East: 116.43 West: 116.43
South: 39.62 North: 39.62
  • Temporal resolution: Hourly
  • File size: 6 MB
  • Browse count: 6,307 Times
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  • Share mode: offline
  • Temporal coverage: 2008-01-01 To 2010-12-31
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: LIU Shaomin   XU Ziwei  

Distributor: National Tibetan Plateau Data Center


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