Assessment of the Daily Cloud-Free MODIS Snow-Cover Product for Monitoring the Snow-Cover Phenology over the Qinghai-Tibetan Plateau
Abstract
:1. Introduction
2. Data and Method
2.1. Study Area
2.2. Daily Cloud-Free MODIS Snow-Cover Product
2.3. In Situ Snow Depth Observations
2.4. Evaluation of MODIS Snow Product
2.5. Sensitivity Analysis
3. Results
4. Discussion
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Ground Observation | Daily Cloud-Free MODIS Snow-Cover Product | |
---|---|---|
Snow | No Snow | |
Snow (Snow >0 cm) | a | b |
No snow (Snow = 0 cm) | c | d |
Variable | Derived Data | Slope | Intercept | R2 | p |
---|---|---|---|---|---|
Snow starting time | In situ data | −0.17 | 640.34 | 0.01 | 0.78 |
(Julian day) | MODIS data (FSC >0) | 1.31 | −2339.52 | 0.16 | 0.23 |
MODIS data (FSC >50%) | −0.12 | 544.27 | 0.00 | 0.90 | |
Snow ending time | In situ data | −0.87 | 1872.36 | 0.49 | <0.05 |
(Julian day) | MODIS data (FSC >0) | 0.98 | −1840.37 | 0.16 | 0.22 |
MODIS data (FSC >50%) | −0.46 | 1003.07 | 0.10 | 0.34 | |
Snow cover duration | In situ data | −0.70 | 1598.01 | 0.07 | 0.42 |
(Days) | MODIS data (FSC >0) | −0.33 | 865.16 | 0.01 | 0.79 |
MODIS data (FSC >50%) | −0.34 | 824.80 | 0.01 | 0.75 |
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Xu, W.; Ma, H.; Wu, D.; Yuan, W. Assessment of the Daily Cloud-Free MODIS Snow-Cover Product for Monitoring the Snow-Cover Phenology over the Qinghai-Tibetan Plateau. Remote Sens. 2017, 9, 585. https://doi.org/10.3390/rs9060585
Xu W, Ma H, Wu D, Yuan W. Assessment of the Daily Cloud-Free MODIS Snow-Cover Product for Monitoring the Snow-Cover Phenology over the Qinghai-Tibetan Plateau. Remote Sensing. 2017; 9(6):585. https://doi.org/10.3390/rs9060585
Chicago/Turabian StyleXu, Wenfang, Hanqing Ma, Donghai Wu, and Wenping Yuan. 2017. "Assessment of the Daily Cloud-Free MODIS Snow-Cover Product for Monitoring the Snow-Cover Phenology over the Qinghai-Tibetan Plateau" Remote Sensing 9, no. 6: 585. https://doi.org/10.3390/rs9060585