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DOI | 10.1007/s00382-017-3563-7 |
MODIS land cover uncertainty in regional climate simulations | |
Li, Xue1,2; Messina, Joseph P.1,2; Moore, Nathan J.1,2; Fan, Peilei2,3; Shortridge, Ashton M.1 | |
2017-12-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2017 |
卷号 | 49 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | MODIS land cover datasets are used extensively across the climate modeling community, but inherent uncertainties and associated propagating impacts are rarely discussed. This paper modeled uncertainties embedded within the annual MODIS Land Cover Type (MCD12Q1) products and propagated these uncertainties through the Regional Atmospheric Modeling System (RAMS). First, land cover uncertainties were modeled using pixel-based trajectory analyses from a time series of MCD12Q1 for Urumqi, China. Second, alternative land cover maps were produced based on these categorical uncertainties and passed into RAMS. Finally, simulations from RAMS were analyzed temporally and spatially to reveal impacts. Our study found that MCD12Q1 struggles to discriminate between grasslands and croplands or grasslands and barren in this study area. Such categorical uncertainties have significant impacts on regional climate model outputs. All climate variables examined demonstrated impact across the various regions, with latent heat flux affected most with a magnitude of 4.32 W/m(2) in domain average. Impacted areas were spatially connected to locations of greater land cover uncertainty. Both biophysical characteristics and soil moisture settings in regard to land cover types contribute to the variations among simulations. These results indicate that formal land cover uncertainty analysis should be included in MCD12Q1-fed climate modeling as a routine procedure. |
英文关键词 | Uncertainty propagation Land cover MCD12Q1 Regional climate simulation RAMS |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000415579000024 |
WOS关键词 | PRODUCTS ; VEGETATION ; CLASSIFICATION ; IMPACTS ; QUALITY ; MODELS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35668 |
专题 | 气候变化 |
作者单位 | 1.Michigan State Univ, Dept Geog Environm & Spatial Sci, E Lansing, MI 48824 USA; 2.Michigan State Univ, Ctr Global Change & Earth Observat, E Lansing, MI 48824 USA; 3.Michigan State Univ, Sch Planning Design & Construct, E Lansing, MI 48824 USA |
推荐引用方式 GB/T 7714 | Li, Xue,Messina, Joseph P.,Moore, Nathan J.,et al. MODIS land cover uncertainty in regional climate simulations[J]. CLIMATE DYNAMICS,2017,49. |
APA | Li, Xue,Messina, Joseph P.,Moore, Nathan J.,Fan, Peilei,&Shortridge, Ashton M..(2017).MODIS land cover uncertainty in regional climate simulations.CLIMATE DYNAMICS,49. |
MLA | Li, Xue,et al."MODIS land cover uncertainty in regional climate simulations".CLIMATE DYNAMICS 49(2017). |
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