WATER: Dataset of surface roughness measurements in the E’pu foci experimental area during the pre-observation period- A Big Earth Data Platform for Three Poles

The dataset of surface roughness measurements was obtained in No. 1 and 2 quadrates of the E’bao foci experimental area during the pre-observation period. Both the quadrates were divided into 3×3 subsites, with each one spanning a 30×30 m2 plot. With the roughness board 110cm long and the measuring points distance 1cm, the samples were collected along the strip from south to north and from east to west, respectively.

The coordinates of the sample would be got with the help of ArcView; and after geometric correction, surface height standard deviation (cm) and correlation length (cm) could be calculated based on the formula listed on pages 234-236, Microwave Remote Sensing, Vol. II.

The original photos of each sampling point, surface height standard deviation (cm) and correlation length (cm) were archived. The roughness data were initialized by the sample name, which was followed by the serial number, the name of the file, standard deviation and correlation length. Each .txt file is matched with one sample photo and standard deviation and correlation length represent the roughness. In addition, the length of 101 needles is also included for further validation.

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Cao, Y., Chao, Z., Che, T., Qin, C., Wu, Y. (2013). WATER: Dataset of surface roughness measurements in the E’pu foci experimental area during the pre-observation period. A Big Earth Data Platform for Three Poles, DOI: 10.3972/water973.0187.db. CSTR: 18406.11.water973.0187.db. (Download the reference： RIS | Bibtex )

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Support Program

The CAS (Chinese Academy of Sciences) Action Plan for West Development Project (No:KZCX2-XB2-09)

National Program on Key Basic Research Project (973 Program (No:2007CB714400)

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