Arid
DOI10.4209/aaqr.2017.01.0021
A Case Study on Fog/Low Stratus Occurrence at Las Lomitas, Atacama Desert (Chile) as a Water Source for Biological Soil Crusts
Lehnert, Lukas W.1; Thies, Boris1; Trachte, Katja1,2; Achilles, Sebastian1; Osses, Pablo3; Baumann, Karen4; Schmidt, Jakob1; Samolov, Elena5; Jung, Patrick6; Leinweber, Peter4; Karsten, Ulf5; Buedel, Burkhard6; Bendix, Joerg1
通讯作者Lehnert, Lukas W.
会议名称7th International Conference on Fog, Fog Collection and Dew
会议日期JUL 24-29, 2016
会议地点Wroclaw, POLAND
英文摘要

The Atacama Desert is well known for the high occurrence of large-scale fog (spatial extents: hundreds of kilometers) emerging as low stratus (LST) decks over the Pacific Ocean. By contrast, the small-scale and heterogeneous occurrence of small-scale fog (hundreds of meters) particularly during summers is widely unconsidered. However, these events are important for the local vegetation and particularly for the biological soil crusts (BSC) that are widely distributed in this extreme ecosystem. Consequently, a case study in a typical fog oasis in the Pan de Azucar National Park was conducted to test the feasibility combining field measurements, drone profiling, remote sensing and numerical modeling (i) to investigate fog-type specific differences regarding dynamics, physical properties and formation, (ii) to test the applicability of remote sensing technology for fog monitoring based on existing low-resolution and a proposed new high-resolution product and (iii) to estimate the related fog water input to BSCs. Two types of fog were observed. The well-known fog/LST deck emerging from the Pacific Ocean with high water path and large spatial extent was the first type. Fog of the second type was patchier, small-scale and not necessarily connected to the LST over the ocean. Instead, fog formation of the second type was related to thermal breeze systems, which produced shallow clouds containing less water than those of type 1. In general, such small-scale fog events were not captured well by existing remote sensing products but could be detected with the proposed new high-resolution product which provided promising results. Both fog types were important water resources for the BSCs, with approximately 8% to 24% of the fog water flux available to the BSCs at the surface. The results indicated the feasibility of the proposed methods' pool to estimate the water budget of BSCs with a high spatial resolution in the future.


英文关键词Orographic fog Landsat WRF-modeling Biological soil crusts Vertical fog droplet spectra
来源出版物AEROSOL AND AIR QUALITY RESEARCH
ISSN1680-8584
EISSN2071-1409
出版年2018
卷号18
期号1
页码254-269
出版者TAIWAN ASSOC AEROSOL RES-TAAR
类型Article;Proceedings Paper
语种英语
国家Germany;Chile
收录类别SCI-E ; CPCI-S
WOS记录号WOS:000426427000021
WOS关键词OZONE-MONITORING INSTRUMENT ; TARAPACA REGION ; CO2 EXCHANGE ; GROUND FOG ; AVHRR DATA ; CLOUD ; CLIMATE ; MODIS ; PATH ; PARAMETERIZATION
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/307534
作者单位1.Philipps Univ Marburg, Fac Geog, D-35037 Marburg, Germany;
2.Ruhr Univ Bochum, Dept Geog, D-44780 Bochum, Germany;
3.Pontificia Univ Catolica Chile, Inst Geog, Santiago, Chile;
4.Univ Rostock, Fac Agr & Environm Sci, Soil Sci, D-18051 Rostock, Germany;
5.Rostock Univ, Inst Biol Sci Appl Ecol & Phycol, D-18051 Rostock, Germany;
6.Univ Kaiserslautern, Plant Ecol & Systemat, D-67663 Kaiserslautern, Germany
推荐引用方式
GB/T 7714
Lehnert, Lukas W.,Thies, Boris,Trachte, Katja,et al. A Case Study on Fog/Low Stratus Occurrence at Las Lomitas, Atacama Desert (Chile) as a Water Source for Biological Soil Crusts[C]:TAIWAN ASSOC AEROSOL RES-TAAR,2018:254-269.
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