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首页> 外文期刊>Journal of Geophysical Research, D. Atmospheres: JGR >Validation of v1.022 mesospheric water vapor observed by the Solar Occultation for Ice Experiment instrument on the Aeronomy of Ice in the Mesosphere satellite
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Validation of v1.022 mesospheric water vapor observed by the Solar Occultation for Ice Experiment instrument on the Aeronomy of Ice in the Mesosphere satellite

机译：冰太阳掩星实验仪器观测的中层水汽v1.022中层水汽的验证

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摘要

Water vapor measured by the Solar Occultation for Ice Experiment (SOFIE) instrument on the Aeronomy of Ice in the Mesosphere satellite has been validated in the vertical range 45-95 km. Precision estimates for SOFIE v1.022 H_20 are -0.2%-2.5% up to 80 km and degrade to -20% at -90 km. The SOFIE total systematic error from the retrieval analysis remains at -3%-4% throughout the lower to middle mesosphere and increases from –9% at 85 km to -16% at 95 km. Comparisons with Atmospheric Chemistry Experiment-Fourier Transform Spectrometer (ACE-FTS) and Microwave Limb Sounder (MLS) H20 show excellent agreement (0%-2%) up to 80 km in the Northern Hemisphere with rare exceptions. Percentage differences above –85 km increase to –20% or worse due largely to the low H_2O volume mixing ratios in the upper mesosphere. For the Southern Hemisphere SOFIE is consistently biased low by 10%-20% relative to both ACE-FTS and MLS H_2O. Slopes of SOFIE daily mean H_2O isopleths on an altitude versus time cross section are used as an indicator of upwelling air motion. In the lower to middle mesosphere, the slope is the largest from mid-May to mid-June (maximum of -1.5 cm/s), and then in July and August, it is reduced significantly. Both SOFIE and MLS daily mean H_2O volume mixing ratios at the polar mesospheric cloud height increase rapidly from –2.0 to –5.0 ppmv prior to the solstice and then approach a near-constant but slightly increasing level (6.0-6.5 ppmv) throughout the season.
机译：通过冰中太阳掩星实验（SOFIE）仪器测量的中层卫星冰层的水汽已在45-95 km的垂直范围内得到验证。 SOFIE v1.022 H_20的精确估计值在80公里以下为-0.2％-2.5％，在-90公里处下降为-20％。取回分析得出的SOFIE总系统误差在中低层中层一直保持在-3％-4％，从85 km处的–9％上升到95 km处的-16％。与大气化学实验-傅立叶变换光谱仪（ACE-FTS）和微波肢体测深仪（MLS）H20的比较显示，在北半球长达80公里的地方，一致性极佳（0％-2％），但很少有例外。 –85 km以上的百分比差异增加到–20％或更糟，这主要是由于中高层中空的H_2O体积混合比低。对于南半球，相对于ACE-FTS和MLS H_2O，SOFIE始终偏低10％-20％。海拔高度与时间横截面上的SOFIE日均H_2O等值线斜率用作上升气流的指标。在中下层中层，从5月中旬到6月中旬，坡度最大（最大-1.5 cm / s），然后在7月和8月，坡度明显减小。冬至之前，SOFIE和MLS的日均H_2O体积混合比在极地中层云高度迅速从–2.0增加到–5.0 ppmv，然后在整个季节达到接近恒定但略有增加的水平（6.0-6.5 ppmv）。

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