The AISA Eagle is a hyperspectral imaging sensor that we will use to measure the spatial distribution of upwelling radiance. The field of view (swath) is 36° wide, which is divided into 1024 channels. In the spectral dimension, 488 pixels are used in the range from 400 to 970 nm. The central pixels will be compared to the radiance measurement of the SMART-Albedometer (1.5° field of view) to get an optimal combination of both instruments, and to obtain the spatial distribution of the cloud-particle phase (ice or liquid) in mixed-phase clouds.
| Name | EAGLE |
| Measured species | Atmospheric Radiation |
| Method | Hyperspectral Grating Spectrometry |
| Quantity primary | Reflectance |
| Quantity secondary | Spatial distribution of cloud particle phase |
| Spectral range | 400–970 nm |
| Location | Underfloor compartment with nadir window |
| Spatial pixels | 1024 |
| Temporal resolution | 4–100 Hz |
Bierwirth, E., Ehrlich, A., Wendisch, M., Gayet, J.-F., Gourbeyre, C., Dupuy, R., Herber, A., Neuber, R., and Lampert, A., (2013): Optical thickness and effective radius of Arctic boundary-layer clouds retrieved from airborne nadir and imaging spectrometry, Atmos. Meas. Tech. 6, 1189-1200.
: a.ehrlich@uni-leipzig.de
: Leipzig Institute for Meteorology (LIM), Stephanstr.3, 04103 Leipzig, Germany
