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Leewave Clouds I
Leewave Clouds II
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Leewave Clouds - Series II



This series of images is the continuation of chapter Leewave Clouds Series I. There different examples are shown and the mechanism of cloud formation is roughly explained. Here only special features are described.

LWclouds14.jpg: This image was taken at 6:57 a.m. in the morning. Though it was made with high sensitivity (adjusted to 3200 ASA), the time of exposure was not appropriate (1/4000 s, Lens Aperture 11 und 200 mm objective). Therefore the exposure is all in all only low and the CCD chip of the SLR is dominated by electronic noise. This results in many pixels which do not fit with their "neighbourhood" so that the image seems to be "grained".

LWclouds16.jpg: The same scene at 8:21 a.m. taken with well adjusted camera parameters.

LWclouds22,24,28.jpg etc.: Here the Leewave clouds are located directly above or near the Monte Rosa Massive which is approximately 60 km away from the location of the photographer.

LWclouds26,27,30.jpg etc.: Here it is especially eye-catching that the cloud layers are arranged like piles of plates. Thereby the weak turbulent flow inside the Leewave clouds becomes visible.

LWclouds11-13.jpg: S. Borrmann, Brezzo di Bedero, Lago Maggiore Region, Northern Italy, 9 August 2004, 8:21 p.m.

LWclouds14-16.jpg: S. Borrmann, Brezzo di Bedero, Lago Maggiore Region, Northern Italy, 21 August 2004, 7:00 a.m.

LWclouds17-37.jpg: S. Borrmann, Brezzo di Bedero, Lago Maggiore Region, Northern Italy, 22 August 2004, 2:47 p.m. to 4:27 p.m.

LWclouds38-45.jpg: S. Borrmann, Brezzo di Bedero, Lago Maggiore Region, Northern Italy, 26 August 2004, 12:33 p.m. to 1:41 p.m.