Space Science and Engineering Center, University of Wisconsin-Madison, Madison, WI 53706, USA.
Sensors (Basel). 2023 Jun 20;23(12):5755. doi: 10.3390/s23125755.
This study highlights hyperspectral infrared observations from the Marine-Atmospheric Emitted Radiance Interferometer (M-AERI) collected as part of the Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Mobile Facility (AMF) deployment on the icebreaker RV Polarstern during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition from October 2019 to September 2020. The ARM M-AERI directly measures the infrared radiance emission spectrum between 520 cm and 3000 cm (19.2-3.3 μm) at 0.5 cm spectral resolution. These ship-based observations provide a valuable set of radiance data for the modeling of snow/ice infrared emission as well as validation data for the assessment of satellite soundings. Remote sensing using hyperspectral infrared observations provides valuable information on sea surface properties (skin temperature and infrared emissivity), near-surface air temperature, and temperature lapse rate in the lowest kilometer. Comparison of the M-AERI observations with those from the DOE ARM meteorological tower and downlooking infrared thermometer are generally in good agreement with some notable differences. Operational satellite soundings from the NOAA-20 satellite were also assessed using ARM radiosondes launched from the RV Polarstern and measurements of the infrared snow surface emission from the M-AERI showing reasonable agreement.
本研究强调了海洋大气发射辐射干涉仪(M-AERI)的高光谱红外观测结果,这些观测结果是作为能源部(DOE)大气辐射测量(ARM)移动设施(AMF)在 2019 年 10 月至 2020 年 9 月 MOSAiC 考察期间破冰船 RV Polarstern 上部署的一部分收集的。ARM M-AERI 直接测量了 520 cm 至 3000 cm(19.2-3.3 μm)之间的红外辐射发射光谱,光谱分辨率为 0.5 cm。这些船载观测为雪/冰红外发射的建模提供了有价值的辐射数据集,也是评估卫星探测的验证数据。高光谱红外观测的遥感提供了有关海面特性(皮肤温度和红外发射率)、近地表空气温度和最低 1 公里温度递减率的有价值信息。M-AERI 观测与 DOE ARM 气象塔和下视红外温度计的观测结果进行了比较,总体上具有良好的一致性,但也存在一些明显差异。还使用从 RV Polarstern 发射的 ARM 探空仪评估了来自美国国家海洋和大气管理局(NOAA)-20 号卫星的业务卫星探测结果,并且 M-AERI 对红外雪面发射的测量结果显示出合理的一致性。