Filling the observational gap in the Atacama Desert with a new network of climate stations
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| Title: | Main Title: Filling the observational gap in the Atacama Desert with a new network of climate stations |
| Description: | 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: | 10.1016/j.gloplacha.2019.103034 (DOI) |
| Related Resource: | Is Derived From 10.5880/CRC1211DB.1 (DOI) |
Responsible Party
| Creators: | Jan Schween (Author), Dirk Hoffmeister (Author), Ulrich Löhnert (Author) |
| Publisher: | Elsevier |
| Publication Year: | 2019 |
Topic
| CRC1211 Topic: | Climate |
| Related Subprojects: | A1, Z2 |
| Subjects: | Keyword: Meteorology DDC: 550 Earth sciences GEMET Inspire Spatial Data Theme: Meteorological geographical features GEMET Thesaurus entries: meteorological research, atmospheric precipitation, climate, fog, wind |
| Geogr. Information Topic: | Climatology/Meteorology/Atmosphere |
File Details
| Filename: | Schween_et_al_2019a_GloPlaCha_new_network_atacama.pdf |
| Data Type: | Text - Article |
| File Size: | 5.2 MB |
| Dates: | Submitted: 31.05.2019 Accepted: 13.09.2019 Available: 21.10.2019 |
| Mime Type: | application/pdf |
| Data Format: | OTHER (pdf 1.7) |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Only Project Members |
| General Access and Use Conditions: | According to the CRC1211DB data policy agreement. |
| Access Limitations: | According to the CRC1211DB data policy agreement. |
| Licence: | None |
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Specific Information - Publication
| Publication Status: | Published |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Article Type: | Journal |
| Source: | Global and Planetary Change |
| Source Website: | https://www.sciencedirect.com/science/article/pii/S0921818119305193 |
| Volume: | 184 |
| Number of Pages: | 14 (1 - 14) |
Metadata Details
| Metadata Creator: | Jan Schween |
| Metadata Created: | 02.12.2019 |
| Metadata Last Updated: | 02.12.2019 |
| Subproject: | A1 |
| Funding Phase: | 1 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Page Visits: | 403 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 11 |
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