AIRBORNE SPECTROMETER MEASUREMENTS FMOM BOREAL SNOW-COVERED LANDSCAPE

The dataset contains 10 meter resolution reflectance data from boreal snow-covered landscape. The purpose of the airborne measurements was to investigate the effect of forest canopy on optical remote sensing signals for snow-covered surfaces. The hyperspectral airborne data was acquired with an AisaDUAL imaging spectrometer on March 18 and on March 21, 2010 in Sodankylä, Finland. The image swath was 240 meters and flight lines were several kilometers long. The original spatial resolution of the data is 80 cm x 80 cm, but it was resampled to pixel size of 10 m x 10 m. All measurements were carried out in non-cloudy conditions (0/8 to 2/8 cloud cover). On 18 March, the tree canopy was snow-free and snow on the ground was several days old, while on 21 March, the tree canopy was snow-covered and snow on ground was fresh. The data contains mosaics of the flight lines for the bands 555 nm, 645 nm, 858.5 nm and 1640 nm for both days 18 March 2010 and 21 March 2010.

本数据集包含来自北方寒带积雪景观的10米分辨率反射率数据。本次机载测量的目的为探究森林冠层对积雪地表光学遥感信号的影响。该高光谱机载数据于2010年3月18日及3月21日，在芬兰索丹屈莱（Sodankylä）通过AisaDUAL成像光谱仪采集获取。影像幅宽为240米，飞行航线长度达数公里。该数据原始空间分辨率为80厘米×80厘米，后被重采样至10米×10米的像元尺寸。所有测量均在无云或少云条件下开展（云量覆盖为0/8至2/8）。3月18日测量时，林木冠层无积雪，地表积雪已存在数日；而3月21日测量时，林木冠层覆盖积雪，地表积雪为新降雪。本数据集包含2010年3月18日与3月21日两天的555 nm、645 nm、858.5 nm及1640 nm波段的飞行航线拼接影像。