Improving urban weather, climate and air quality

Let us explore alternative ideas about the causes of the extremes of weather and climate. Are we creating our own weather reality? According to Quantum Mechanics, "the action of measurement changes the state of a physical system". This is derived from the superposition principle and "the Schrodinger's cat paradox", i.e., a cat put in a box with a radioactive element is both dead and alive until someone opens the box. This is to mean that the state of the cat is the superposition of the two states "death" and "life". Whether the superposition is linear or non-linear doesn't matter here. The presence of a radioactive material may favor more of death state than alive, so that the superposition sways towards the other end. Then the question is, what is the action of opening? The action of opening collapses the state into one, either death or life and not the superposition of the two. Does the action of opeing the box result in the happenned ...

Debate erupted about spectrally nudging regional climate models during summer 2016 training on regional climate modeling at National Center for Atmospheric Research (NCAR). The debate was whether nudging is valid for regional climate models. Because of the interest of many participants who were PhDs and postdocs from all over the world, special session was assigned for extended discussion. I was new to the nudging concepts at the time, but thought that it is interesting, especially whether nudging is useful for downscaling reanalysis and GCMs incorporating urban canopy models. I dropped my ear and followed the discussion. Based on the ideas raised from the organizers and participants, I also forwarded some questions of relevance for the urban climate modeling. As an extended discussion during the afternoon, many questions were raised: If a regional climate model is spectrally nudged, doesn't it lose its added value as a regional climate model because nudging forces the model t...