By Alexander Marshak, Anthony Davis
Advancements in 3-dimensional cloud radiation during the last few a long time are assessed and distilled into this contributed quantity. Chapters are authored by way of subject-matter specialists who address a large viewers of graduate scholars, researchers, and somebody drawn to cloud-radiation techniques within the sunlight and infrared spectral regions. After introductory chapters and a piece at the primary physics and computational innovations, the amount generally treats major software parts: the influence of clouds at the Earth's radiation price range, that is a necessary element of weather modeling; and distant commentary of clouds, particularly with the complicated sensors on present and destiny satellite tv for pc missions.
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Extra info for 3D Radiative Transfer in Cloudy Atmospheres (Physics of Earth and Space Environments)
17 As part of this makeover, I went in 1985 on my ﬁrst cloud ﬁeld program ﬂight as a guest of Vernon Derr, then Director of the NOAA Environmental Research Labs in Boulder. 7 shows me about to board a research aircraft in San Diego to ﬂy over stratocumulus clouds, which are abundant offshore and which attracted the ﬁrst FIRE ﬁeld campaign two years later. This was the day one of the ﬂight engineers told me they shined a ﬂashlight on the Eppley ﬂux radiometers to make sure they were working! Vernon told me radiation was not a high priority on these research ﬂights.
First, measurements are the acid test of any model; it is not enough that a model simply ‘looks’ better. Perhaps weighting 1D albedos by the proper measure of cloud fraction will correctly predict the albedo of patchy cloud ﬁelds. But more importantly, our job is not to make our models as complicated as Nature herself; it is to simplify and idealize, in order to gain understanding. 1D cloud modeling is an entirely acceptable way to do this [. ) 1 Scales, Tools and Reminiscences 25 student could write.
3D cloud radiation has not undergone a classic revolution, where a pre-existing theory is overthrown. No such dominant theory existed – certainly not that old bugaboo 1D radiation. 1D radiation was merely a waystation at which to bide time, and do what useful work could be done, until the proper tools for 3D were available. No one seriously contended that 1D would sufﬁce for the 3D problem except in very circumscribed situations like GCMs. There was a small scufﬂe in the 1980s between the Euclideanists and the fractalists over how best to model 3D structure, but the Euclidean cloud shape model, like the 1D model, was merely a waystation.
3D Radiative Transfer in Cloudy Atmospheres (Physics of Earth and Space Environments) by Alexander Marshak, Anthony Davis