Novel method for fog monitoring using cellular networks infrastructures
N. David1, P. Alpert1,2, and H. Messer31The Department of Geophysical, Atmospheric and Planetary Sciences, Tel-Aviv University, Tel Aviv, Israel 2The Porter School of Environmental Studies, Tel-Aviv University, Tel Aviv, Israel 3The School of Electrical Engineering, Tel-Aviv University, Tel Aviv, Israel
Received: 12 Jul 2012 – Accepted for review: 10 Aug 2012 – Discussion started: 17 Aug 2012
Abstract. A major detrimental effect of fog is visibility limitation which can result in serious transportation accidents, traffic delays and therefore economic damage. Existing monitoring techniques including satellites, transmissometers and human observers – suffer from low spatial resolution, high cost or lack of precision when measuring near ground level. Here we show a novel technique for fog monitoring using wireless communication systems. Communication networks widely deploy commercial microwave links across the terrain at ground level. Operating at frequencies of tens of GHz they are affected by fog and are, effectively, an existing, spatially world-wide distributed sensor network that can provide crucial information about fog concentration and visibility. Fog monitoring potential is demonstrated for a heavy fog event that took place in Israel. The correlation between transmissomters and human eye observations to the visibility estimates from the nearby microwave links was found to be 0.53 and 0.61, respectively. These values indicate the high potential of the proposed method.
David, N., Alpert, P., and Messer, H.: Novel method for fog monitoring using cellular networks infrastructures, Atmos. Meas. Tech. Discuss., 5, 5725-5752, doi:10.5194/amtd-5-5725-2012, 2012.