Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.509 IF 5.509
  • IF 5-year value: 5.689 IF 5-year
    5.689
  • CiteScore value: 5.44 CiteScore
    5.44
  • SNIP value: 1.519 SNIP 1.519
  • SJR value: 3.032 SJR 3.032
  • IPP value: 5.37 IPP 5.37
  • h5-index value: 86 h5-index 86
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 161 Scimago H
    index 161
Discussion papers
https://doi.org/10.5194/acp-2018-1268
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2018-1268
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 17 Dec 2018

Research article | 17 Dec 2018

Review status
This discussion paper is a preprint. A revision of the manuscript was accepted for the journal Atmospheric Chemistry and Physics (ACP).

Spatiotemporal dynamics of fog and low clouds in the Namib unveiled with ground and space-based observations

Hendrik Andersen1,2, Jan Cermak1,2, Irina Solodovnik1,2, Luca Lelli3, and Roland Vogt4 Hendrik Andersen et al.
  • 1Karlsruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research
  • 2Karlsruhe Institute of Technology (KIT), Institute of Photogrammetry and Remote Sensing
  • 3University of Bremen, Institute of Environmental Physics and Remote Sensing
  • 4University of Basel, Department of Environmental Sciences

Abstract. Fog is an essential component of Namib-region ecosystems. Current knowledge on Namib-region fog patterns and processes is limited by a lack of coherent observations in space and time. In this study, data from multiple satellite platforms and station measurements paint a coherent picture of the spatiotemporal dynamics of fog and low cloud (FLC) distribution. It is found that observed seasonal patterns derived from satellite observations differ from station measurements in coastal locations, whereas they agree further inland. This is linked to an observed seasonal cycle in the vertical structure of FLC that determines the probability of low-level clouds touching the ground. For the first time, these observations are complemented by spatially coherent statistics concerning the diurnal cycle of FLC using geostationary satellite data. The average timing of the start of the diurnal FLC cycle is found to strongly depend on the distance to the coastline (r ≈ 0.85 north of 25° N), a clear indication of dominant advective processes. In the central Namib, FLC typically occurs 2–4 hours later than in other coastal regions, possibly due to local advection patterns. The findings lead to a new conceptual model of the spatiotemporal dynamics of fog and low clouds in the Namib.

Hendrik Andersen et al.
Interactive discussion
Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Login for Authors/Co-Editors] [Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Hendrik Andersen et al.
Hendrik Andersen et al.
Viewed  
Total article views: 438 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
351 84 3 438 4 1
  • HTML: 351
  • PDF: 84
  • XML: 3
  • Total: 438
  • BibTeX: 4
  • EndNote: 1
Views and downloads (calculated since 17 Dec 2018)
Cumulative views and downloads (calculated since 17 Dec 2018)
Viewed (geographical distribution)  
Total article views: 330 (including HTML, PDF, and XML) Thereof 328 with geography defined and 2 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 23 Mar 2019
Publications Copernicus
Download
Short summary
Fog and low clouds (FLC) are an essential but poorly understood component of Namib-region climate. This study uses observations from multiple satellite platforms and ground-based measurements to coherently characterize Namib-region FLC patterns. Findings concerning the seasonal cycle of the vertical structure and the diurnal cycle of FLC lead to a new conceptual model of the spatiotemporal dynamics of FLC in the Namib and help to improve the understanding of underlying processes.
Fog and low clouds (FLC) are an essential but poorly understood component of Namib-region...
Citation