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# IDL6_answer - IDL Problem#6 6 Due Tuesday 19 October 3(50...

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IDL Problem #6 6. Due Tuesday, 19 October. 3. (50 points). Using IDL and the same POAM data files that you have been working with: (a) Reproduce (at least approximately; feel free to choose your own color tables, fonts, etc.) the color contour plots below, which show the average POAM ozone profiles vs. day of year. To do so, calculate running daily average ozone profiles in both hemispheres, for each day of 2000. In other words, calculate an average ozone profile for each day, but do this with a running average (this is to ensure that there is enough data to calculate an average for at least most days of the year). As an example, a 7-day running average for day 10 would include all measurements from day 7 through day 13. Omit measurements that are masked as bad or that have errors greater than 200%. (b) Quantitatively compare the measurement variability at 20 km in the winter vs. the summer seasons by reproducing (approximately is okay) the standard deviation plot below. (c) Explain why the variability is relatively high in the NH winter and SH spring.

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IDL6_answer - IDL Problem#6 6 Due Tuesday 19 October 3(50...

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