[286] - Filling the observational gap in the Atacama Desert with a new network of climate stations

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Citation
Schween, J., Hoffmeister, D., Löhnert, U., 2019. Filling the observational gap in the Atacama Desert with a new network of climate stations. Global and Planetary Change, 184, 1 - 14. DOI: 10.1016/j.gloplacha.2019.103034.
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Identification
Title(s):Main Title: Filling the observational gap in the Atacama Desert with a new network of climate stations
Description(s):Abstract: The Atacama Desert in northern Chile is the driest place on Earth. In this region, climate models are subject to large biases, especially precipitation is significantly overestimated. Meteorological observations in the region are sparse and limited to inhabited places at the coast or the foothills of the Andes. To fill this gap, a new network of 15 automatic weather stations has been established beginning April 2017. These stations do not only record standard meteorological parameters such as temperature, humidity and wind, but also soil temperatures and humidity, additionally a wetness sensor gives information about the occurrence of fog. Data from the first year(s) of this network show a very regular wind pattern with easterly winds during night and morning and westerly winds from noon to evening. This wind transports moisture from the Pacific Ocean into the desert which forms fog during the night which may account for a moisture supply on the order of the rare precipitation events in the region. A few precipitation events have been observed during the first years. The recorded data allows to distinguish between different sources: convective precipitation above the Altiplano, which in some cases extended to the western slope of the Andes, and troughs extending from mid latitudes to the region, directing moist air from the pacific into the region. Both of these mechanisms brought only some tenths of mm precipitation. In one case the accidental combination of flow over the Andes and a weak cut-off low above the Pacific led to moisture convergence off the coast of northern Chile and initiated a convective system moving south-east ward which brought for the region extreme precipitation of 3-10 mm.
Identifier(s):DOI: 10.1016/j.gloplacha.2019.103034
Relation(s):Source: DOI: 10.5880/CRC1211DB.1
Responsible Party
Creator(s):Author: Jan Schween
Author: Dirk Hoffmeister
Author: Ulrich Löhnert
Publisher:Elsevier
Topic
CRC1211 Topic:Climate
Related Sub-project(s):A1, Z2
Subject(s):CRC1211 Keywords: Meteorology
DDC: 550 Earth sciences
GEMET Inspire Spatial Data Theme: Meteorological geographical features
GEMET: meteorological research, atmospheric precipitation, climate, fog, wind
Topic Category:ClimatologyMeteorologyAtmosphere
File Details
File Name:Schween_et_al_2019a_GloPlaCha_new_network_atacama.pdf
Data Type:Text
File Size:5280 kB (5.156 MB)
Date(s):Date Submitted: 2019-05-31
Date Accepted: 2019-09-13
Available: 2019-10-21
Mime Type:application/pdf
Data Format:OTHER (pdf 1.7)
Language:English
Status:Completed
Constraints
Download Permission:OnlyCRC1211
General Access and Use Conditions:According to the CRC1211DB data policy agreement.
Access Limitations:According to the CRC1211DB data policy agreement.
Geographic
North:-19.46235
East:-68.46191
South:-25.19093
West:-70.59326
Measurement Region:Chile
Measurement Location:--Chile--
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2019
Type:Article
Article Type:Journal
Source:Global and Planetary Change
Volume:184
Number Of Pages:14
Page Range:1 - 14
Metadata Details
Metadata Creator:Jan Schween
Metadata Created:2019-12-02
Metadata Last Updated:2020-09-21
Subproject:A1
Funding Phase:1
Metadata Language:English
Metadata Version:V43
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