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Fig. 2. Study area, showing the locations of hydrological stations (circle with plus), forty meteorological<br />
stations (circle) and the river network of the Lena River basin<br />
APPLICATION AND RESULTS<br />
Dataset The GAME project (GEWEX [Global Energy and Water Cycle Experiment]<br />
Asian Monsoon Experiment) has released a vast amount of data related to hydrology,<br />
meteorology, and climatology for study areas from Thailand to Siberia<br />
(http://www.hyarc.nagoya-u.ac.jp/game/). A meteorological dataset covering the Lena<br />
River basin from 1986-2000 is available from the GAME dataset (CD-ROM: GAME<br />
Dataset for the Water and Energy Cycle in Siberia, Version 1). Forty stations were<br />
selected for this study (Fig. 1). The record for each station included daily measurements<br />
of 13 items: mean air temperature ( ° C ), maximum air temperature ( ° C ), minimum<br />
temperature ( °C ), precipitation amount (mm), minimum relative air humidity (%), water<br />
vapor pressure (hPa), saturation deficit value, mean wind speed (m/s), maximum wind<br />
speed (m/s), total cloud amount, amount of low cloud, sea level atmospheric pressure<br />
(hPa), sunshine duration (hour), minimum land surface temperature ( °C ), snow depth<br />
(cm), and extent of snow coverage. The wind speed was measured at a 10-m height above<br />
the ground surface; other measurements were taken at 2 m. Station data were interpolated<br />
onto the entire basin using the inverse of the distance between each grid point and the<br />
nearest three gauges (Ma et al., 2000). Although the geographical factors should be<br />
considered in such data reprocessing, only the temperature was corrected according to the<br />
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