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◎ Dataset of annual values of climate normals from Chinese surface stations for global exchange (1971-2000)

This dataset is derived from nationwide digitalized CLIMAT files from various provincial meteorological bureaus through statistic compilations, according to the Nationwide Surface Climate Data (1961-1990) Statistic Method and the Surface Meteorological Observation Practice. The dataset provides the annual values of climate normals from 194 basic and reference surface observation stations in 1971-2000, and the dataset includes monthly data of 13 elements such as temperature, pressure, precipitation, moisture pressure, cloud, weather phenomena, evaporation, snow cover, wind, surface temperature, frozen soil, sunshine duration in individual years, and all files are in ASCII code.

  • Name
  • Dataset of annual values of climate normals from Chinese surface stations for global exchange (1971-2000) 
  • Keywords
  • surface meteorological data, pressure, temperature, relative humidity, wind,precipitation, sunshine duration 
  • Area Scope
  •  
  • Making time
  • 2005/4/25 0:00:00 
  • Begin Time
  • 1971/1/1 0:00:00 
  • End Time
  • 2001/9/30 0:00:00 
  • Frequency
  • every 10 years 
  • Share Level
  • Ordinary reg. user access 
  • Quality
  • Meteorological Data Office under CMA Meteorological Information Centre has made rigid quality checks on the digitalized raw data in 1971-2000, including checks on climate boundary values, extreme values, internal consistency and time consistency among others. However, no homogeneity verification has been made on data in time sequence, only those re-sited stations that may cause data heterogeneity have been treated. During the quality checks, it was found: 1) due to faulty instrument, the 40cm-depth soil temperatures reported by the Station Ji'an (57799) in Jiangxi province form January to August in 1971 were generally higher than the mean climate values, and these data in this period are suspicious and they can only be used as a reference. 2) In the statistics about extreme annual and monthly wind speeds in individual years, if the extreme wind speed is >500, it can be either of the two cases: 1) it is the true observational value, and the extreme wind speed is indeed higher than 50.0m/s; 2) the extreme wind speed was caused by the so-called "scale-overtaking", and the true observation was that the extreme wind speed was ≥ -500. The process of data treatment: the monthly values of climate normals in 1971-2000 is derived statistically according to the statistic items and method for publication that have been stipulated in the Nationwide Climate Data Statistic Method distributed by the National Meteorological Centre in January 1990, and the relevant rules in the Surface Meteorological Observation Practice published by CMA in 1980. 
  • DataSource
  • Unknown 
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