Arid
DOI10.1175/JTECH-D-12-00037.1
The Fennec Automatic Weather Station (AWS) Network: Monitoring the Saharan Climate System
Hobby, Matthew1; Gascoyne, Matthew1; Marsham, John H.2; Bart, Mark1; Allen, Christopher3; Engelstaedter, Sebastian3; Fadel, Dieh Mohamed4; Gandega, Abdoulaye4; Lane, Richard1; McQuaid, James B.1; Ouchene, Bouziane5; Ouladichir, Abdelkader5; Parker, Douglas J.1; Rosenberg, Phil1; Ferroudj, Mohammed Salah5; Saci, Azzedine5; Seddik, Fouad5; Todd, Martin6; Walker, Dan2; Washington, Richard1
通讯作者Hobby, Matthew
来源期刊JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY
ISSN0739-0572
EISSN1520-0426
出版年2013
卷号30期号:4页码:709-724
英文摘要

The Fennec automatic weather station (AWS) network consists of eight stations installed across the Sahara, with four in remote locations in the central desert, where no previous meteorological observations have existed. The AWS measures temperature, humidity, pressure, wind speed, wind direction, shortwave and longwave radiation (upwelling and downwelling), ground heat flux, and ground temperature. Data are recorded every 3 min 20 s, that is, at 3 times the temporal resolution of the World Meteorological Organization’s standard 10-min reporting for winds and wind gusts. Variations in wind speeds on shorter time scales are recorded through the use of second-and third-order moments of 1-Hz data. Using the Iridium Router-Based Unrestricted Digital Internetworking Connectivity Solutions (RUDICS) service, data are transmitted in near-real time (1-h lag) to the United Kingdom, where calibrations are applied and data are uploaded to the Global Telecommunications System (GTS), for assimilation into forecast models.


This paper describes the instrumentation used and the data available from the network. Particular focus is given to the engineering applied to the task of making measurements in this remote region and challenging climate. The communications protocol developed to operate over the Iridium RUDICS satellite service is described. Transmitting the second moment of the wind speed distribution is shown to improve estimates of the dust-generating potential of observed winds, especially for winds close to the threshold speed for dust emission of the wind speed distribution. Sources of error are discussed and some preliminary results are presented, demonstrating the system’s potential to record key features of this region.


类型Article
语种英语
国家England ; Mauritania ; Algeria
收录类别SCI-E
WOS记录号WOS:000317955700005
WOS关键词WEST-AFRICAN MONSOON ; BOUNDARY-LAYER ; SCALE CIRCULATIONS ; DIURNAL CYCLE ; PART II ; DUST ; DYNAMICS ; EMISSION ; UPLIFT ; AREAS
WOS类目Engineering, Ocean ; Meteorology & Atmospheric Sciences
WOS研究方向Engineering ; Meteorology & Atmospheric Sciences
来源机构University of Oxford
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178149
作者单位1.Univ Leeds, Leeds LS2 9JT, W Yorkshire, England;
2.Univ Leeds, Natl Ctr Atmospher Sci, Leeds LS2 9JT, W Yorkshire, England;
3.Univ Oxford, Oxford, England;
4.Off Natl Meteorol, Nouakchott, Mauritania;
5.Off Natl Meteorol, Algiers, Algeria;
6.Univ Sussex, Brighton, E Sussex, England
推荐引用方式
GB/T 7714
Hobby, Matthew,Gascoyne, Matthew,Marsham, John H.,et al. The Fennec Automatic Weather Station (AWS) Network: Monitoring the Saharan Climate System[J]. University of Oxford,2013,30(4):709-724.
APA Hobby, Matthew.,Gascoyne, Matthew.,Marsham, John H..,Bart, Mark.,Allen, Christopher.,...&Washington, Richard.(2013).The Fennec Automatic Weather Station (AWS) Network: Monitoring the Saharan Climate System.JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY,30(4),709-724.
MLA Hobby, Matthew,et al."The Fennec Automatic Weather Station (AWS) Network: Monitoring the Saharan Climate System".JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY 30.4(2013):709-724.
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