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het_chem

het chem project update(s)

To do:

  • Compare MIPAS and WACCM profiles
  • 70-30 hPa
  • Plot individual years
  • Apply changes to monsoon
  • Spatial deNOy
  1. NH Subpolar
  2. Monsoon HNO3

NH Subpolar

Profile discrepancy

There are substantially more profiles in WACCM compared to MIPAS. However, good days look, well, good:

Jan_HNO3_pdf

Red circles are WACCM, black circles are MIPAS. Pretty good match. But the problem is all the downtime that MIPAS had over its lifetime. The plot below shows the number of NH profiles for each day in WACCM (red), MIPAS (black), and the daily difference (blue):

daily_nprofiles

Essentially, there are many days where MIPAS is observing nothing but WACCM is observing the usual ~500 profiles in the NH. I changed my scripts to only report WACCM profiles on days when MIPAS also has at least 1 profile inside the vortex edge. As you'll see below, this helps but there are still more WACCM profiles than observed. So I may have to set a higher threshold (in the map above there are ~50 profiles...maybe 15 or more is a "good" day? I can look for a "bad" MIPAS day and plot that vs. WACCM), or I can match exact profile numbers.

UTLS (164-68 hPa)

UTLS MIPAS HNO3 profiles and PDFs

Here are Jan, Feb, and March respectively:

Jan_HNO3_pdf

Feb_HNO3_pdf

Mar_HNO3_pdf

This does not explain the big peak in hetAll.008, but I'm thinking to take, e.g., the first 15 days of March only (similar to how we were doing 0901-1015 for SH at one point).

UTLS HNO3 CDFs

In all cases, all the CDFs are drawn from different distributions (and it looks like indeed noHetAll is closest to the obs):

Jan_HNO3_CDF Feb_HNO3_CDF Mar_HNO3_CDF

70-30 hPa

MIPAS HNO3 profiles and PDFs

Same as above, but the distribution plots are for 70-30 hPa. After looking at this, I could probably go to ~20 hPa. Anyway, these look really good! You were right Doug, looks like this is where the magic happens.

Jan_HNO3_pdf

Feb_HNO3_pdf

Mar_HNO3_pdf

HNO3 CDFs

Jan_HNO3_CDF Feb_HNO3_CDF Mar_HNO3_CDF

Individual years

Below are the indiviual years for February. In general, WACCM varies a lot more than the obs.

Jan_HNO3_pdf Feb_HNO3_pdf

Jan_HNO3_pdf Feb_HNO3_pdf

Jan_HNO3_pdf Feb_HNO3_pdf

Jan_HNO3_pdf Feb_HNO3_pdf

Jan_HNO3_pdf Feb_HNO3_pdf

Monsoon

Here are the PDF plots for June-August for 0-30N, Eastern Hemisphere only:

Here are Jan, Feb, and March respectively:

Jan_HNO3_pdf

Feb_HNO3_pdf

Mar_HNO3_pdf

And the CDFs:

Jun_HNO3_CDF Jul_HNO3_CDF Aug_HNO3_CDF

Monsoon looks good, I think, and HetAll.008 certainly looks the best out of the WACCM bunch. It looks like this could be a bias issue, and I'll try shifting means tomorrow and see how the CDFs look. July 2011 is also shown below as an example of a single year:

Jul_HNO3_pdf Jul_HNO3_CDF

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Some stuff for Doug's het chem project

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