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 through subject-matter specialists who address a vast viewers of graduate scholars, researchers, and a person drawn to cloud-radiation tactics within the sunlight and infrared spectral regions. After introductory chapters and a bit at the basic physics and computational strategies, the amount widely treats major software components: the influence of clouds at the Earth's radiation funds, that's an important point of weather modeling; and distant commentary of clouds, specifically with the complex 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)
They claim these techniques are easy to think up, and mostly misbegotten. In the end, our ARM group implemented rigorous techniques26 called “maximum-cross-section” and “local estimation” which enabled us to perform Monte Carlo calculations that we could only dream about a few years earlier. The Russian approach to Monte Carlo states point-blank that Monte Carlo is just a way of solving the integral form of the radiative transfer equation. At root, the Russians say, Monte Carlo has nothing to do with “photons” propagating from one “point scatter” to the next; these are merely convenient (but potentially misleading) ﬁctions for algorithmically calculating the Monte Carlo solution.
In truth, I never made much use of ATRAD itself, except as a source of ideas for more fundamental work and algorithm improvements. Sometimes I have chastised myself about this, since lying concealed within ATRAD were many discoveries later made by others. Not least of these was a capability to study radiative feedbacks in toto, in a single model, rather than just the shortwave or longwave parts separately. In spite of being looked upon with suspicion and occasional hostility by many of the NCAR weather prediction crowd, I was given lots of freedom and little pressure of the kind that bedevils young assistant professors today.
1984) remained a dangling Part I. I still have fat folders of Part II results in my ﬁle cabinet. This taught me never to use “Part I” in a paper title! Viewing our abandonment of Part II from this vantage point in time, I suspect that we felt overwhelmed by the quantity of results that could pour forth from a radiation model taking input from a time-stepping cloud model, and didn’t know quite how to extract the needle from this vast haystack. This feeling must be magniﬁed a hundredfold among the current generation of 3D radiation modelers.