Airborne sea surface temperature and surface roughness images taken during the LASER drifter deployment in the Gulf of Mexico on 2016-02-11

Infrared Sea Surface Temperature (SST) images using an infrared camera and surface roughness images using visible cameras looking at the sun glint were collected using cameras on-board the Partenavia (P.68) airplane at an approximately altitude of 1000m during LASER experiment on February 11, 2016. Images were georectified using the onboard motion unit (IMU). The light intensity was high-pass filtered to remove scales larger than about 100-200m (depending on the incidence angle). The contrast of light intensity was calculated as the ratio of the high pass filtered data by the raw data. Composite maps were created using only parts of the images with specific sun and sensor angles. SST images were georectified using the onboard motion unit (IMU). The SST was not corrected from the possible drift of the instrument. Additional correction using the additional calibrated KT19 sensor was not included here. Composite maps were created using every possible image acquired during two airplane passes (19:10 - 19:20 UTC and 19:24 - 19:31 UTC). This dataset includes the flight tracks and georeferences from the IMU. Further details are published in: Rascle, N., Molemaker, J., Marié, L., Nouguier, F., Chapron, B., Lund, B., & Mouche, A. (2017). Intense deformation field at oceanic front inferred from directional sea surface roughness observations. Geophysical Research Letters, 44(11), 5599–5608. doi:10.1002/2017gl0734732016年2月11日，在LASER实验期间，研究人员利用搭载于帕特纳维亚（Partenavia）P.68型飞机的相机，在约1000米的飞行高度下，采集了两类图像：一类为通过红外相机获取的红外海表温度（Sea Surface Temperature, SST）图像，另一类为通过对准海面太阳耀斑的可见光相机采集的海表粗糙度图像。所有图像均通过机载惯性测量单元（Inertial Measurement Unit, IMU）完成地理校正。对光强信号进行高通滤波处理，以去除空间尺度大于约100-200米的分量（具体阈值取决于入射角度）。光强对比度通过高通滤波后的数据与原始数据的比值计算得到。合成图仅选取满足特定太阳角度与传感器角度条件的图像区域进行制作。红外海表温度（SST）图像同样通过机载惯性测量单元（IMU）完成地理校正。本次数据集未针对仪器可能存在的漂移对海表温度结果进行校正。此处未纳入使用经额外校准的KT19传感器所开展的补充校正流程。合成图通过两次飞行航段（协调世界时19:10-19:20与19:24-19:31）获取的全部可用图像生成。本数据集包含机载IMU记录的飞行轨迹与地理参考信息。更多详细研究细节已发表于以下文献：Rascle, N., Molemaker, J., Marie, L., Nouguier, F., Chapron, B., Lund, B., & Mouche, A. (2017). Intense deformation field at oceanic front inferred from directional sea surface roughness observations. *Geophysical Research Letters*, 44(11), 5599–5608. doi:10.1002/2017gl073473