Actual Vapour Pressure (February)

Actual vapour pressure is the variable expressing atmospheric moisture content through the partial pressure exerted by the water vapour present in the atmosphere. The monthly uncorrected vapour pressure, ed, at any given location in South Africa was subsequently held constant for that entire month and derivatives of ed, such as daily maximum and minimum relative humidity or daily vapour pressure deficit which depend on ratios of uncorrected actual to saturated vapour pressure, were then computed using daily maximum/minimum temperatures as inputs to daily saturated vapour pressure calculations, which were in turn used with that location's monthly uncorrected actual vapour pressure.

实际水汽压（actual vapour pressure）是通过大气中现存水汽产生的分压来表征大气水汽含量的变量。南非任意给定站点的月度未校正水汽压ed，在当月全时段保持恒定；而依赖于未校正实际水汽压与饱和水汽压（saturated vapour pressure）比值的ed衍生变量，例如日最高、最低相对湿度或日水汽压亏缺，则以日最高/最低气温作为日饱和水汽压计算的输入值，随后结合该站点的月度未校正实际水汽压完成计算。

搜集汇总

背景与挑战

背景概述

该数据集记录了2007年南非地区的实际蒸汽压力数据，用于分析大气水分含量及其相关气象变量。数据由夸祖鲁-纳塔尔大学研究团队创建，覆盖南非特定地理区域，包含月尺度未校正蒸汽压力及其衍生计算指标。