Gobabas
Energy balance measurements in the Namib desert. Started August 1, 2009.
NaFoLiCA
NAmibia FOg Life Cycle Analysis - Researching the dynamics and effects of fog in the Namib
Urbanfluxes
URBANFLUXES stands for "URBan ANthrpogenic heat FLUX from Earth observation Satellites" and is a Horizon 2020 funded space research project, coordinated by the Foundation for Research and Technology Hellas (Greece).
GEOURBAN
Exploiting earth observation in sustainable urban planning & management
TIR@METCRAX II
Contribution of the University of Basel towards the "Meteorological measurements in the Barringer Meteor Crater" project for the examination of downslope windstorm-type flows.
Bucharest
Urban climate study of Bucharest, Romania.
BRIDGE
BRIDGE is a joint effort of 14 European Organizations aiming at incorporating sustainability aspects in urban planning processes, accounting for some well recognised relations between urban metabolism and urban structure. The local measurement program consist of an additional street canyon tower and an additional flux site.
Hyper-Swiss-Net
The Hyper-Swiss-Net project aims at developing and supporting the scientific expertise and infrastructure in Switzerland for the exploitation of imaging spectrometry technology for different Earth observation applications
Micropoem
Investigation of birch pollen production and emission by combining experimental and modeling work in order to quantify the released pollen in relation to turbulence characteristics and micrometeorological parameters around a pollen source.
Former projects
A list of former projects of the MCR Unibas



Fig. 1: Fog at Gobabeb, which brings water for flora and fauna. But how much?

Fig. 2: A stratus that often occurs over the ocean and near the coast. Often, these drift further inland, sometimes making eventual landfall away from the coast.

Fig. 3: Scales covered by the three component projects. Regional climate modelling is not part of NaFoLiCA, but may profit from project findings.

NaFoLiCA: Namib Fog Life Cycle Analysis

The goal of NaFoLiCA is to improve our understanding of the temporal and spatial patterns of fog in the Namib region, as well as the factors driving fog development. In-situ observations are combined with satellite-based remote sensing and numerical weather prediction.

Background

The Namib Desert is a hyper arid coastal desert with annual precipitation levels typically well below 50 mm. The dry climate can partly be attributed to the cold upwelling of the Benguela current along the Namibian coast. On the other hand the upwelling contributes to the formation of fog, which happens with such a high frequency that some plants and animals in the Namib have developed the ability to harvest fog water in order to survive. In addition to the Benguela current, the fog formation is influenced by interactions between the two major pressure systems in the area, namely the South-Atlantic Anticyclone and the thermal low over southern Africa. In combination with local conditions, a complex process of fog formation and advection develops. These processes are still, to a large degree, not understood.

Project description

Using In-situ observations combined with satellite-based remote sensing and numerical weather prediction, we examine spatial and temporal patterns in both fog occurrence and fog physical properties. Our aim is to identify the factors controlling the development and the life cycle stages of the coastal-desert fog. These factors cover several disciplines, from the microphysical process level to landscape-scale spatial patterns. Therefore, Nafolica is divided into three complementary sub-projects, each of which is indispensable for the overall aim:

  • NaFoLiCA-F: Ground-based observations of fog properties. Highly detailed observations of fog optical and microphysical properties as well as temporal changes in relation to other observed parameters are used as a basis for high-resolution process studies.
  • NaFoLiCA-S: Satellite-based observations of fog patterns and properties. Based on a combination of geostationary and polar-orbiting systems, spatial and temporal patterns of fog, as well as microphysics retrievals, will help understand large-scale dynamics.
  • NaFoLiCA-M: Numerical weather prediction modeling. A 3D model of fog development will yield insights into the factors determining microphysical properties and the spatial extent of fog.

About

NaFoLiCA is an international collaboration between three universities, with each being responsible for a sub-project: University of Basel (NaFoLiCA-F), Karlsruhe Institute of Technology (NaFoLiCA-S) and the University of Bonn (NaFoLiCA-M). Additionally, a cooperation with Gobabeb Research and Training Centre in Namibia offers local young scientists and graduate students a possibility to profit from project findings. The project is funded by Deutsche Forschungsgemeinschaft (DFG) and the Swiss National Science Foundation (SNSF).

Fig. 1: Basemap of the FogNet stations in Namibia with DEM background and Kuiseb in blue.
Fig. 2: Hillshade of DEM and most of the FogNet stations that will be involved in NaFoLiCa (Source: SRTM)

DEM and fogstations in Namibia

The stations are aligned in a T-like shape, essentially allowing sampling of fog occurance along a north-south and a est-west transcect. This allows to trace the fog occurance and its relation to the landscape and height thereof as the fog often results from a stratus connecting to the ground (thus becoming fog) along its way inland.

Available Fog events

General information about fog videos

Send an email to R. Vogt if you would like to be informed about occuring events


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Fog events in Namibia, measured by FogNet stations





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Direct links

As .mp4

RGB
DUST
Full IOP 2017

As .webm

RGB
DUST
Full IOP 2017

Videos just for the IOP viewing pleasure


Poster: The vertical and spatial structure of fog The vertical and spatial structure of fog events in the Namib Desert (EGU2019-13918)
Poster: Measuring fog precipitation and fog deposition in the Namib Desert (EGU2019-4907-1)
PICO: An animated combination of satellite and ground measurements to visualize fog as a water source (EGU2019-18036)
Poster: Lifting the fog in the central Namib – where did it come from?
Poster: Near-surface dynamics during Fog Events: An approach to connect fog precipitation with fog deposition at the Gobabeb Namib Research Institute
Poster: Fog droplet distributions and liquid water fluxes in the hyperarid Namib
Poster: Microlysimeter and fog collector measurements Robert Spirigin the Namib desert

Selected contributions of the NaFoLiCA-F part

The thumbnails on the left give an impression of posters, respectively PICO(s) and, on click, lead to the corresponding material (PDF/PPTX).

At the EGU 2019, two posters and one PICO have been presented.

At the IFDA 2019, three posters have been presented.

Robert Spirig; Roland Vogt; Jarl Are Larsen; Christian Feigenwinter; Andreas Wicki; Joel Franceschi; Eberhard Parlow; Bianca Adler; Norbert Kalthoff; Jan Cermak; Hendrik Andersen; Julia Fuchs; Andreas Bott; Maike Hacker; Niklas Wagner; Gillian Maggs-Kölling; Theo Wassenaar; Mary Seely (2019). Probing the Fog Life Cycles in the Namib DesertBulletin of the American Meteorological Society, 100 (12), 2491-2507.
doi:10.1175/BAMS-D-18-0142.1 

Selected contributions of the NaFoLiCA-S part

Andersen, H.; Cermak, J.; Solodovnik, I.; Lelli, L.; Vogt, R. (2019). Spatiotemporal dynamics of fog and low clouds in the Namib unveiled with ground- and space-based observations  Atmospheric chemistry and physics, 19 (7), 4383–4392.
doi:10.5194/acp-19-4383-2019 

Andersen, H.; Cermak, J. (2018). First fully diurnal fog and low cloud satellite detection reveals life cycle in the Namib  Atmospheric measurement techniques, 11 (10), 5461–5470.
doi:10.5194/amt-11-5461-2018 

Available non-fog events

General information about no fog videos

Send an email to R. Vogt if you would like to be informed about occurring events


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Regular, no fog days in Namibia





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