Comparison of Ventilated and Unventilated Air Temperature Measurements in Inland Dronning Maud Land on the East Antarctic Plateau
Comparison of Ventilated and Unventilated Air Temperature Measurements in Inland Dronning Maud Land on the East Antarctic Plateau
复制标题
东南极高原内陆德隆宁莫德地通风与不通风气温测量比较
DOI：
10.1175/jtech-d-21-0107.1
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发表时间：
2021
影响因子：
2.2
通讯作者：
Weidner, George
中科院分区：
文献类型：
--
作者：
Morino, Shohei;Kurita, Noayuki;Hirasawa, Noahiko;Motoyama, Hideaki;Sugiura, Konosuke;Lazzara, Matthew;Mikolajczyk, David;Welhouse, Lee;Keller, Linda;Weidner, George
自然通风（NV）传感器在南极高原的表面温度测量在很大程度上受到太阳辐射加热引起的系统误差。在这里，我们研究了辐射加热误差在东南极高原德龙宁毛德地使用新安装的自动气象站（AWSs）在NDF和中继站和现有的AWSs在中继站和圆顶富士。在这些AWS中使用了两种类型的NV屏蔽：多板辐射屏蔽和简单的圆柱形屏蔽。在南方夏季，强制通风（FV）传感器和NV传感器之间的温度偏差从来没有达到零，因为连续的阳光。每小时平均温度误差在晴天和弱风条件下的中午达到8°C。误差随反射短波辐射的增加而线性增加，随风速的增加而非线性减小。在多板和圆柱形屏蔽中均观察到这些特征。多板屏蔽的误差幅度远大于圆柱形屏蔽。为了量化辐射误差，我们应用了基于回归方法的现有校正模型，并在校正后成功地将误差减少了70%以上。这表明，我们可以使用校正的温度数据，而不是质量控制的数据，这消除了温暖的偏差，在内陆德龙宁毛德地弱风。
Surface temperature measurements with naturally ventilated (NV) sensors over the Antarctic Plateau are largely subject to systematic errors caused by solar radiative heating. Here we examined the radiative heating error in Dronning Maud Land on the East Antarctic Plateau using both the newly installed automatic weather stations (AWSs) at NDF and Relay Station and the existing AWSs at Relay Station and Dome Fuji. Two types of NV shields were used in these AWSs: a multiplate radiation shield and a simple cylinder-shaped shield. In austral summer, the temperature bias between the force-ventilated (FV) sensor and the NV sensor never reached zero because of continuous sunlight. The hourly mean temperature errors reached up to 8°C at noon on a sunny day with weak wind conditions. The errors increased linearly with increasing reflected shortwave radiation and decreased nonlinearly with increasing wind speed. These features were observed in both the multiplate and the cylinder-shaped shields. The magnitude of the errors of the multiplate shield was much larger than that of the cylinder-shaped shield. To quantify the radiative errors, we applied an existing correction model based on the regression approach and successfully reduced the errors by more than 70% after the correction. This indicates that we can use the corrected temperature data instead of quality controlled data, which removed warm bias during weak winds in inland Dronning Maud Land.
影响因子：
2.2
作者：
Nakamura, R;Mahrt, L
通讯作者：
Mahrt, L
影响因子：
8
作者：
Lazzara, Matthew A.;Weidner, George A.;Cassano, John J.
通讯作者：
Cassano, John J.