Details

Autor(en) / Beteiligte

• Chen, Yu-fu
• Tang, Hai-ping

Titel

Dust storms trend in the Capital Circle of China over the past 50 years and its correlation with temperature, precipitation and wind

Ist Teil von

• Huanjing kexue, 2005-01, Vol.26 (1), p.32

Ort / Verlag

China

Erscheinungsjahr

2005

Quelle

MEDLINE

Beschreibungen/Notizen

• The trends of number of dust storm days of the selected 11 meteorological stations from their established year to 2000 as well as their correlations with temperature, precipitation and wind are revealed. The number of dust storm days of the Capital Circle of China is distinctly variable in space and time. The numbers of dust storm days of the western area are far more than those of the eastern area. The interannual variability of number of dust storm days is remarkable. The number of dust storm days of the following 7 stations, Erlianhaote, Abaga, Xilinhaote, Fengning, Zhangjiakou, Huailai and Beijing, declined along the past decades, but those of the other four stations had no significant upward or downward trends. There is a marked seasonality of the number of dust storm days, and the maximum was in April. The correlation between number of dust storm days and number of days of mean wind velocity > 5 m/s, which is critical wind velocity to entrain sand into the air, was strongest among the three climatic fac