Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-7245-2017 |
Analyzing cloud base at local and regional scales to understand tropical montane cloud forest vulnerability to climate change | |
Van Beusekom, Ashley E.1; Gonzalez, Grizelle1; Scholl, Martha A.2 | |
2017-06-16 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The degree to which cloud immersion provides water in addition to rainfall, suppresses transpiration, and sustains tropical montane cloud forests (TMCFs) during rainless periods is not well understood. Climate and land use changes represent a threat to these forests if cloud base altitude rises as a result of regional warming or deforestation. To establish a baseline for quantifying future changes in cloud base, we installed a ceilometer at 100m altitude in the forest upwind of the TMCF that occupies an altitude range from similar to 600m to the peaks at 1100m in the Luquillo Mountains of eastern Puerto Rico. Airport Automated Surface Observing System (ASOS) ceilometer data, radiosonde data, and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellite data were obtained to investigate seasonal cloud base dynamics, altitude of the trade-wind inversion (TWI), and typical cloud thickness for the surrounding Caribbean region. Cloud base is rarely quantified near mountains, so these results represent a first look at seasonal and diurnal cloud base dynamics for the TMCF. From May 2013 to August 2016, cloud base was lowest during the midsummer dry season, and cloud bases were lower than the mountain-tops as often in the winter dry season as in the wet seasons. The lowest cloud bases most frequently occurred at higher elevation than 600 m, from 740 to 964 m. The Luquillo forest low cloud base altitudes were higher than six other sites in the Caribbean by similar to 200-600 m, highlighting the importance of site selection to measure topographic influence on cloud height. Proximity to the oceanic cloud system where shallow cumulus clouds are seasonally invariant in altitude and cover, along with local trade-wind orographic lifting and cloud formation, may explain the dry season low clouds. The results indicate that climate change threats to low-elevation TMCFs are not limited to the dry season; changes in synoptic-scale weather patterns that increase frequency of drought periods during the wet seasons (periods of higher cloud base) may also impact ecosystem health. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403779200006 |
WOS关键词 | PUERTO-RICO ; FOG ; VARIABILITY ; PATTERNS ; RAINFALL ; AMERICA ; LEVEL ; OCEAN ; WATER |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/18402 |
专题 | 地球科学 |
作者单位 | 1.US Forest Serv, USDA, Int Inst Trop Forestry, Jardin Bot Sur, 1201 Calle Ceiba, Rio Piedras, PR 00926 USA; 2.US Geol Survey, Natl Res Program, 12201 Sunrise Valley Dr, Reston, VA 20192 USA |
推荐引用方式 GB/T 7714 | Van Beusekom, Ashley E.,Gonzalez, Grizelle,Scholl, Martha A.. Analyzing cloud base at local and regional scales to understand tropical montane cloud forest vulnerability to climate change[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(11). |
APA | Van Beusekom, Ashley E.,Gonzalez, Grizelle,&Scholl, Martha A..(2017).Analyzing cloud base at local and regional scales to understand tropical montane cloud forest vulnerability to climate change.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(11). |
MLA | Van Beusekom, Ashley E.,et al."Analyzing cloud base at local and regional scales to understand tropical montane cloud forest vulnerability to climate change".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.11(2017). |
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