Abstract The addition of measurements of downward-looking infrared surface temperature to the standard suite of Bowen Ratio Energy Balance observations permits a direct examination of the adequacy of fetch. Furthermore, when the observed rates of change of surface temperature are examined (using multiple regression) in the light of the total turbulent heat exchange (the sum of sensible and latent heats) and the total heat energy available (due to net radiation, corrected for the ground heat exchange) a quantification of the rate of heat storage otherwise unaccounted for (e.g. by the canopy) is revealed. The statistical methodology minimizes the difficulties often encountered near dawn and dusk when the ratio of sensible to latent heat fluxes approaches -1. Analysis making use of all available data is then possible, without data exclusions being applied. Four months of data obtained at a site in the Zimbabwe highland region in 2014 are used to illustrate this augmented Bowen Ratio analysis methodology. The analysis reveals that the heat storage terms tend to dominate the heat energy budget for periods following dawn and dusk, and that most of the heat storage is associated with the uppermost layers of soil rather than the vegetative canopy.

中文翻译：

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增强的鲍温比分析——I：场地充足性、提取和蓄热 (ABRA)

摘要 将向下看的红外表面温度的测量添加到鲍文比能量平衡观测的标准套件中，可以直接检查获取的充分性。此外，当根据总湍流热交换（显热和潜热的总和）和可用总热能（由于净辐射，校正为地热交换）揭示了在其他情况下无法计算（例如由树冠）的热量存储率的量化。当感热通量与潜热通量之比接近 -1 时，统计方法可以最大限度地减少黎明和黄昏附近经常遇到的困难。然后可以利用所有可用数据进行分析，没有应用数据排除。2014 年在津巴布韦高地地区的一个地点获得的四个月的数据用于说明这种增强的鲍文比率分析方法。分析表明，在黎明和黄昏之后的时期，蓄热术语往往主导热能预算，并且大部分蓄热与土壤的最上层有关，而不是与植被冠层有关。