surface assimilation

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Noun1.surface assimilation - the accumulation of molecules of a gas to form a thin film on the surface of a solid
chemisorption, chemosorption - adsorption (especially when irreversible) by means of chemical instead of physical forces; "chemisorption of gaseous nitrogen on iron catalysts"
sorption - the process in which one substance takes up or holds another (by either absorption or adsorption)
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The dots represent the Global Telecommunication System observation sites (red dots) and additional RC LACE national observations (green dots) processed in the ALADIN-LAEF ensemble surface assimilation. The black inner line denotes the postprocessing domain.