气候变化领域集成服务门户(CCPortal): Air temperature measurements using autonomous self-recording dataloggers in mountainous and snow covered areas

CCPortal

DOI	10.1016/j.atmosres.2019.03.034
	Air temperature measurements using autonomous self-recording dataloggers in mountainous and snow covered areas
	Navarro-Serrano F.; López-Moreno J.I.; Azorin-Molina C.; Buisán S.; Domínguez-Castro F.; Sanmiguel-Vallelado A.; Alonso-González E.; Khorchani M.
发表日期	2019
ISSN	0169-8095
起始页码	168
结束页码	179
卷号	224
英文摘要	High mountain areas are poorly represented by official weather observatories. It implies that new instruments must be evaluated over snow-covered and strongly insolated environments (i.e. mid-latitude mountain areas). We analyzed uncertainty sources over snow covered areas including: 1) temperature logger accuracy and bias of two widely used temperature sensors (Tinytag and iButton); 2) radiation shield performance under various radiation, snow, and wind conditions; 3) appropriate measurement height over snow covered ground; and 4) differences in air temperature measured among nearby devices over a horizontal band. The major results showed the following. 1) Tinytag performance device (mean absolute error: MAE ≈ 0.1–0.2 °C in relation to the reference thermistor) was superior to the iButton (MAE ≈ 0.7 °C), which was subject to operating errors. 2) Multi-plate radiation shield showed the best performance under all conditions (> 90% samples has bias between ±0.5 °C). The tube shield required wind (> 2.5 m s −1 ) for adequate performance, while the funnel shield required limited radiation (< 400 W m −2 ). Snow cover causes certain overheating. 3) Air temperatures were found to stabilize at 75–100 cm above the snow surface. Air temperature profile was more constant at night, showing a considerable cooling on near surface at midday. 4) Horizontal air temperature differences were larger at midday (0.5 °C). These findings indicate that to minimize errors air temperature measurements over snow surfaces should be carried out using multi-plate radiation shields with high-end thermistors such as Tinytags, and be made at a minimum height above the snow covered ground. © 2019 Elsevier B.V.
英文关键词	Air temperature; Complex terrain; Radiation shield; Snow; SPICE (Solid Precipitation Intercomparison Experiment); Temperature logger
语种	英语
scopus关键词	Atmospheric temperature; Errors; Landforms; Radiation; Radiation shielding; Temperature measurement; Thermistors; Uncertainty analysis; Air temperature; Air temperature measurement; Complex terrains; Mean absolute error; Operating errors; Snow covered area; Solid precipitation; Uncertainty sources; Snow; accuracy assessment; air temperature; complex terrain; mountain region; performance assessment; precipitation (climatology); snow cover; temperature profile; wind field
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162178
作者单位	Department of Geoenvironmental Processes and Global Change, Pyrenean Institute of Ecology, CSIC, Campus de Aula Dei, Avenida de Montañana, P.O. Box 202, Zaragoza, 50080, Spain; Department of Geography, University of Zaragoza, San Juan Bosco, 7, Zaragoza, 50009, Spain; Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Box 460, Gothenburg, 405 30, Sweden; Regional AEMET (Spanish Meteorological Agency) Office in Aragón, Paseo del Canal, 17, Zaragoza, 50009, Spain
推荐引用方式 GB/T 7714	Navarro-Serrano F.,López-Moreno J.I.,Azorin-Molina C.,et al. Air temperature measurements using autonomous self-recording dataloggers in mountainous and snow covered areas[J],2019,224.
APA	Navarro-Serrano F..,López-Moreno J.I..,Azorin-Molina C..,Buisán S..,Domínguez-Castro F..,...&Khorchani M..(2019).Air temperature measurements using autonomous self-recording dataloggers in mountainous and snow covered areas.Atmospheric Research,224.
MLA	Navarro-Serrano F.,et al."Air temperature measurements using autonomous self-recording dataloggers in mountainous and snow covered areas".Atmospheric Research 224(2019).