Physics
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.2943n&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 15, p. 2943-2946
Physics
1
Meteorology And Atmospheric Dynamics: Boundary Layer Processes, Meteorology And Atmospheric Dynamics: Land/Atmosphere Interactions, Meteorology And Atmospheric Dynamics: Turbulence, Planetology: Solid Surface Planets: Remote Sensing
Scientific paper
A series of parallel striations has been observed on thermal satellite images of a desert marginal area in West Africa. The available climatic data suggest their identification as helical roll vortices of the type associated with the formation of cloud streets. This is because the wavelength of the striations conforms to the expected depth of the Atmospheric Boundary Layer (ABL) expected for such roll structures at the time of the image, and varies spatially according to the influence of ground surface roughness on ABL depth. Knowledge of helical roll vortices is usually derived from vertical temperature and wind profiles and radar reflectivity fields over time, whereas the image data presented here permit visualization of the horizontal component, and thus examination of their interaction with surface phenomena. Association of the observed striations with systems of stabilised dunes in the study area, due to their similarity in length, direction and spacing, would support hypotheses of a causal relationship between helical roller vortices and linear dune systems.
Grove A. T.
Nichol Janet E.
No associations
LandOfFree
Thermal satellite images and boundary layer structures in desert marginal areas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermal satellite images and boundary layer structures in desert marginal areas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal satellite images and boundary layer structures in desert marginal areas will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-789591