Why dew and fog measurements carried out by microlysimeters do not adequately reflect the intact soil? The role of temperature

doi:10.1016/j.agrformet.2021.108648

	Why dew and fog measurements carried out by microlysimeters do not adequately reflect the intact soil? The role of temperature
	Kidron, Giora J.1; Kronenfeld, Rafael 2; Xiao, Bo 3
刊名	AGRICULTURAL AND FOREST METEOROLOGY
	2021-11-15
卷号	310 页码:10
关键词	Dew Distillation Heat flux PVC Thermal conductivity
ISSN号	0168-1923
DOI	10.1016/j.agrformet.2021.108648
通讯作者	Kidron, Giora J.(kidron@mail.huji.ac.il)
英文摘要	The assumption that microlysimeters (MLs) adequately reflect the soil conditions is widespread. Nevertheless, previous findings raised doubts regarding the reliability of MLs to adequately reflect the amounts of dew and fog of the intact soil (control, COT). We therefore hypothesized that the structure (whether a single cylinder inserted into the soil (ML-I), or a cylinder inserted within a large-diameter cylinder thus mimicking a weighing ML (MLII)), the construction material (PVC and metal, i.e., iron), length (12, 50 cm) and height above ground (12, 30 cm), all will largely affect the thermal regime of the ML. A set of experiments were conducted during which the ML temperatures (1, 5 cm and more) and the dew and fog (using cloths attached to 10 x 10 x 0.2 glass plates located on the MLs) were measured. The findings indicate that (a) in comparison to COT, the minimum temperatures substantially decreased (by 2.0-2.5 degrees C) and dew and fog substantially increased (by a factor of 3.2-3.5) with height above ground (b) MLPVC-I and both types of MLs-II yielded higher dew and fog than COT, especially MLPVC-II, which yielded 2.1-fold higher amounts of dew and fog than COT (c) except for MLmetal-I that yielded similar temperatures and dew and fog to COT, all the remaining MLs exhibited lower nocturnal temperatures and higher dew and fog than COT. The higher amounts of dew and fog recorded by the MLs are explained by changes in the heat regime induced by the structure of the ML. The findings raise doubts on recent attempts to deduce the magnitude of vapor flux (dewrise, distillation) based on dew and fog measurements with MLs, and call for extra caution once arid ecosystem productivity is analyzed and predicted following ML-based dew and fog values.
WOS关键词	NON-RAINFALL WATER ; NEGEV DESERT ; EVAPORATION MEASUREMENTS ; WEIGHING LYSIMETERS ; MICROBIOTIC CRUSTS ; HYDROLOGIC BALANCE ; BARE SOIL ; DEPOSITION ; LICHENS ; INPUT
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000698753900024
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165698]
专题	中国科学院地理科学与资源研究所
通讯作者	Kidron, Giora J.
作者单位	1.Hebrew Univ Jerusalem, Inst Earth Sci, Givat Ram Campus, IL-91904 Jerusalem, Israel 2.Israel Meteorol Serv, Meteorol Unit, IL-84993 Kibbutz Sede Boqer, Israel 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Kidron, Giora J.,Kronenfeld, Rafael,Xiao, Bo. Why dew and fog measurements carried out by microlysimeters do not adequately reflect the intact soil? The role of temperature[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,310:10.
APA	Kidron, Giora J.,Kronenfeld, Rafael,&Xiao, Bo.(2021).Why dew and fog measurements carried out by microlysimeters do not adequately reflect the intact soil? The role of temperature.AGRICULTURAL AND FOREST METEOROLOGY,310,10.
MLA	Kidron, Giora J.,et al."Why dew and fog measurements carried out by microlysimeters do not adequately reflect the intact soil? The role of temperature".AGRICULTURAL AND FOREST METEOROLOGY 310(2021):10.