Urban-rural contrasts of meteorological parameters in Lodz
Urban-rural contrasts of meteorological parameters in Lodz
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DOI：
10.1007/s00704-005-0147-y
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发表时间：
2006-02-01
影响因子：
3.4
通讯作者：
Wibig, J
中科院分区：
文献类型：
--
作者：
Fortuniak, K;Klysik, K;Wibig, J
本文分析了1997-2002年罗兹两个自动气象站（一个城市和一个农村）的数据，揭示了气温、相对湿度、水汽压和风速等参数的城乡差异。在有利的天气条件下，城市和农村车站之间的最高温差超过8摄氏度。城镇的相对湿度较低，有时超过40%。水蒸气压差可以是正的（最大5hpa）或负的（最大- 4hpa）。市区站的风速平均夜间低34%，白天低39%。回归分析表明，对于低于1.13 ms（-1）的乡村风，城市风可能比乡村风强。还注意了分析参数在24小时周期内的奇异性。结果表明，在有利条件下，城市热岛强度的典型过程在各个季节都是相似的。本课程分为四个阶段。风速差异似乎也以一种典型的方式变化。案例研究表明，湿度与温度不同。在良好的天气条件下可以以不同的方式进化。提出了相对湿度演变的类型。
Data from two automatic stations in Lodz (one urban and one rural) for the period 1997-2002 are analyzed to reveal urban-rural contrasts Of Such parameters as air temperature, relative humidity, water vapour-pressure and wind speed. Under favourable weather conditions the highest temperature differences between the urban and rural station exceeds 8 degrees C. Relative humidity is lower in the town, sometimes by more than 40%. Water vapour pressure differences can be either positive (up to 5 hPa) or negative (up to -4 hPa). Wind speed at the urban station is on average lower by about 34% in night and 39% during daytime. Regression analysis shows that for rural winds lower than 1.13 ms(-1) urban winds can be stronger than rural speeds. Attention has also been paid to singularities in the Course of the analyzed parameters over 24 hour Periods. It is shown that the typical course of the urban heat island intensity under favourable conditions is similar in all season. Four stages of this Course have been distinguished. Wind speed differences also seem to change in a typical way. Case studies show that humidity contrasts, unlike temperature. can evolve in different Ways Under fine weather conditions. Types of relative humidity evolution are proposed.