气候变化领域集成服务门户(CCPortal): Topography influences diurnal and seasonal microclimate fluctuations in hilly terrain environments of coastal California

CCPortal

DOI	10.1371/journal.pone.0300378
	Topography influences diurnal and seasonal microclimate fluctuations in hilly terrain environments of coastal California
	John, Aji; Olden, Julian D.; Oldfather, Meagan F.; Kling, Matthew M.; Ackerly, David D.
发表日期	2024
ISSN	1932-6203
起始页码	19
结束页码	3
卷号	19 期号:3
英文摘要	Understanding the topographic basis for microclimatic variation remains fundamental to predicting the site level effects of warming air temperatures. Quantifying diurnal fluctuation and seasonal extremes in relation to topography offers insight into the potential relationship between site level conditions and changes in regional climate. The present study investigated an annual understory temperature regime for 50 sites distributed across a topographically diverse area (>12 km(2)) comprised of mixed evergreen-deciduous woodland vegetation typical of California coastal ranges. We investigated the effect of topography and tree cover on site-to-site variation in near-surface temperatures using a combination of multiple linear regression and multivariate techniques. Sites in topographically depressed areas (e.g., valley bottoms) exhibited larger seasonal and diurnal variation. Elevation (at 10 m resolution) was found to be the primary driver of daily and seasonal variations, in addition to hillslope position, canopy cover and northness. The elevation effect on seasonal mean temperatures was inverted, reflecting large-scale cold-air pooling in the study region, with elevated minimum and mean temperature at higher elevations. Additionally, several of our sites showed considerable buffering (dampened diurnal and seasonal temperature fluctuations) compared to average regional conditions measured at an on-site weather station. Results from this study help inform efforts to extrapolate temperature records across large landscapes and have the potential to improve our ecological understanding of fine-scale seasonal climate variation in coastal range environments.
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001198076000054
来源期刊	PLOS ONE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296900
作者单位	University of Washington; University of Washington Seattle; University of Washington; University of Washington Seattle; University of Colorado System; University of Colorado Boulder; University of California System; University of California Berkeley; University of California System; University of California Berkeley
推荐引用方式 GB/T 7714	John, Aji,Olden, Julian D.,Oldfather, Meagan F.,et al. Topography influences diurnal and seasonal microclimate fluctuations in hilly terrain environments of coastal California[J],2024,19(3).
APA	John, Aji,Olden, Julian D.,Oldfather, Meagan F.,Kling, Matthew M.,&Ackerly, David D..(2024).Topography influences diurnal and seasonal microclimate fluctuations in hilly terrain environments of coastal California.PLOS ONE,19(3).
MLA	John, Aji,et al."Topography influences diurnal and seasonal microclimate fluctuations in hilly terrain environments of coastal California".PLOS ONE 19.3(2024).