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| DOI | https://doi.org/10.1594/PANGAEA.886340 |
| Ground-based digital camera (RGB), spectroscopy, and pigment data from Toolik Vegetation Grid, Toolik Lake, Alaska | |
| Beamish; Alison Leslie | |
| 发布日期 | 2018-02-16 |
| 数据集类型 | dataset |
| 英文简介 | Ground-based spectroscopy measurements acquired systematically within the Toolik Vegetation Grid in the 2016 growing season. All data were collected in a subset of 1 x 1 m long-term monitoring plots representing three distinct vegetation communities three times representing early, peak and late season. Spectral data were acquired using a GER 1500 field spectrometer (350-1050 nm; 512 bands, spectral resolution 3 nm, spectral sampling 1.5 nm, and 8! field of view). Spectra were collected under clear weather conditions at the highest solar zenith angle between 10:00 and 14:00 local time. Data were collected at nadir approximately 1 m off the ground resulting in a Ground Instantaneous Field of View (GIFOV) of approximately 15 cm in diameter. Nine point measurements of upwelling radiance (Lup) were collected in each plot and averaged to characterize the spectral variability and to reduce noise. Downwelling radiance (Ldown) was measured as the reflectance from a white Spectralon© plate. Surface reflectance (R) was processed as Lup/Ldown x 100 (0-100%). Reflectance spectra were preprocessed with a Savitzky-Golay smoothing filter (n = 11) and subset to 400-985 nm to remove sensor noise at the edges of the radiometer detector. |
| 空间范围 | Median Latitude: 68.621750 * Median Longitude: -149.606345 * South-bound Latitude: 68.617800 * West-bound Longitude: -149.613970 * North-bound Latitude: 68.624230 * East-bound Longitude: -149.598820 |
| 时间范围 | 2016-06-01T00:00:00 - 2016-08-01T00:00:00 |
| 语种 | 英语 |
| 国家 | 国际 |
| 学科大类 | 气候变化 |
| 学科子类 | 气候变化 |
| 文献类型 | 数据集 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/215259 |
| 推荐引用方式 GB/T 7714 | Beamish,Alison Leslie. Ground-based digital camera (RGB), spectroscopy, and pigment data from Toolik Vegetation Grid, Toolik Lake, Alaska.2018-02-16.https://doi.org/10.1594/PANGAEA.886340. |
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