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Regional and general

机译:区域和一般

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A World Meteorological Organization (WMO) committee evaluated the record sea-level pressure (SLP) measurement of 1089.4hPa on 30 December 2004 in Tosontsengel, Mongolia (1724.6m). Although instrumentation and data collection procedures were properly followed according to the assessment of the committee, concern was raised regarding the reliability of SLP adjustment from such a high-elevation station. This paper addresses this concern with a number of analyses that look at relationships between SLP extremes and corresponding station elevation and temperature. First, we selected data from stations extracted from the Integrated Surface Database (ISD-Lite) of NOAA's National Climate Data Center. A spatial analysis indicates that elevation shows little to no association (R~2 values essentially zero) to extreme SLP. However, a second analysis between extreme SLP and air temperature indicates that high regionalism exists in spatial correlations (local R~2) between those two variables. This relationship to temperature is likely the result of differences in SLP adjustment formulae used around the world. Based on this analysis, on the need to differentiate the SLP values adjusted using extremely cold temperatures (and generally high elevation), and following past WMO SLP guidelines, the WMO Rapporteurs for Climate and Weather Extremes therefore have created two distinct SLP records: (a) highest adjusted SLP (below 750m), currently 1083.3hPa recorded on 31 December 1968 at Agata, Evenhiyskiy, Russia; and (b) highest adjusted SLP (above 750m), currently 1089.4hPa (by Russian method; 1089.1hPa by WMO formula) on 30 December 2004 in Tosontsengel, Mongolia. Future WMO guidance regarding SLP adjustment may lead to re-evaluation of this and other SLP records.
机译:世界气象组织(WMO)委员会于2004年12月30日对蒙古Tosontsengel(1724.6m)的创纪录的海平面压力(SLP)测量值1089.4hPa进行了评估。尽管根据委员会的评估,仪表和数据收集程序得到了适当的遵循,但人们对这种高海拔站进行SLP调整的可靠性提出了关注。本文通过许多分析来解决这一问题,这些分析着眼于SLP极限值和相应的站高和温度之间的关系。首先,我们从NOAA国家气候数据中心的综合地面数据库(ISD-Lite)提取的站点中选择数据。空间分析表明,海拔高度与极端SLP几乎没有关联(R〜2值基本上为零)。但是,对极端SLP和气温之间的第二次分析表明,这两个变量之间的空间相关性(局部R〜2)存在较高的区域性。与温度的这种关系可能是世界各地使用的SLP调整公式不同的结果。基于此分析,由于需要区分使用极低温(通常是高海拔)调整的SLP值,并且根据WMO过去的SLP指南,WMO气候和天气极端事件报告员因此创建了两个不同的SLP记录:(a )调整后的最高SLP(低于750m),目前记录为1968年12月31日在俄罗斯Evenhiyskiy的Agata的1083.3hPa; (b)调整后的最高SLP(750m以上),2004年12月30日,目前在蒙古的Tosontsengel,目前为1089.4hPa(通过俄罗斯方法;通过WMO公式为1089.1hPa)。 WMO关于SLP调整的未来指南可能会导致对该SLP记录和其他SLP记录进行重新评估。

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    《Oceanographic Literature Review》 |2015年第9期|2070-2070|共1页
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