Climatology of fog occurrence over a wide flat area in Serbia based on visibility observations
Climatology of fog occurrence over a wide flat area in Serbia based on visibility observations
复制标题
基于能见度观测的塞尔维亚广阔平坦地区雾发生的气候学
DOI：
10.1002/joc.5883
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
D. Vujović
中科院分区：
文献类型：
--
作者：
K. Veljović;D. Vujović
对塞尔维亚包括帕尼翁平原地区在内的相当平坦的部分地区的14个测站的雾事件进行了长期分析。对于大多数站点(巴利ć、Novi Sad、Kikinda、VRšAc、贝尔格莱德-苏尔čin、Smederevska Palanka、瓦尔耶沃、洛兹尼卡、内格伦)，都有1973年至2005年33年间的数据。其余站点的数据提供的时间较短：索姆博尔和Veliko Gradište 1982-2005年，斯雷姆斯卡米特罗维察和贝尔格莱德-VračAr 1983-2005年，以及1989年至2005年Zrenjanin。雾事件仅根据能见度观测进行定义。近75%的分析数据集显示，在分析的整个时间段内，低能见度事件的年度趋势为负。在向塞尔维亚北部移动的过程中，这一负面趋势正在增加，而且大多数有下降趋势的站点都是农村站点。雾在10月至2月期间最频繁，可能主要是由于辐射冷却，特别是在反气旋天气形势盛行的10月。海拔越高，雾事件持续时间越长，平均相对湿度变化越大，变化范围为92.1-97.4%。对于大多数观测站来说，在有低云的情况下，12月是雾发生频率最高的月份。分析了低风速(<2m/S)期间的起雾频率及其与云底高度等于或大于2000m时的起雾频率的相关性，在71%的站点中，相关系数大于0.6，且低海拔站的相关性普遍好于高海拔站。
Long‐term analysis of occurrence of fog events at 14 stations across part of fairly flat terrain of Serbia, which includes the area of the Pannonian Plain, is conducted. For the majority of stations (Palić, Novi Sad, Kikinda, Vršac, Belgrade‐Surčin, Smederevska Palanka, Valjevo, Loznica, Negotin) data were available for the 33‐year period, 1973–2005. For the rest of stations, data were available for shorter periods: for Sombor and Veliko Gradište 1982–2005, for Sremska Mitrovica and Belgrade‐Vračar 1983–2005, and for Zrenjanin 1989–2005. Fog event is defined only based on visibility observations. Almost 75% of analysed data sets showed a negative annual trend of low‐visibility events throughout the analysed time periods. This negative trend is increasing as it goes towards the north of Serbia and most of the stations with decreasing trend are rural. Fog is most frequent in the period between October and February and it is likely mostly due to radiative cooling and especially in October when an anticyclonic synoptic situation is prevailing. Stations with higher elevations have more lasting fog events and fog events with more variable mean relative humidity compared to their counterparts, which ranges from 92.1–97.4%. For most of stations December is the month with the highest frequency of occurrence of fog in the presence of a low cloud. Frequency of fog onset during low wind speed (below 2 m/s) is analysed along with its correlation with a frequency of fog onset when the cloud base height is equal to or above 2,000 m. In ~71% of the stations correlations are higher than 0.6, and stations with a lower elevations show a generally better correlation than those with higher elevations.
影响因子：
8.9
作者：
Egli, S.;Thies, B.;Bendix, J.
通讯作者：
Bendix, J.