[Crater-team] Another six-month data point on the CRatER GCR LET time series

[Mark D Looper]

Hello—

                Fatemeh is preparing a paper using an estimate of dose made with a different but related algorithm, and since it is not surveying the whole LET spectrum it is accumulated on a much shorter timebase.  That would be better than my final figure with dose at a six-month cadence; if someone wants to pull together a highlight, her work should also predominate since it involves prediction as well as just tabulation (which is what I did – our 2020 paper focused on optimizing background correction, rather than on doing anything with the results beyond reporting them).  Feel free to use any of the figures I sent, of course!  I attach a revised document with an additional figure, extending the colorscale plot of ratios of spectra over the mission that was in the 2020 paper.

Thanks—
--Mark

Mark D. Looper, PhD
Space Sciences Department
The Aerospace Corporation
M/S M2-260
P.O. Box 92957
Los Angeles, CA 90009-2957
Mobile: 310-529-3406
Voicemail: 310-336-6302
Publications: https://www.loopers.org/curvitae.html

From: Nathan Schwadron <naa42 at usnh.edu>
Date: Tuesday, March 19, 2024 at 2:51 AM
To: Fatemeh Rahmanifard <F.Rahmanifard at unh.edu>, Harlan Spence <Harlan.Spence at unh.edu>, Mark D Looper <mark.d.looper at aero.org>, crater-team at lists.sr.unh.edu <crater-team at lists.sr.unh.edu>
Subject: Re: [Crater-team] Another six-month data point on the CRatER GCR LET time series
Hi All

Looking at this, I am wondering if we should send in a highlight for the space weather journal.
I am thinking a very brief 1-2 pg’er with several figs.


Cheers

Nathan



On Mar 19, 2024, at 8:45 AM, Nathan Schwadron <Nathan.Schwadron at unh.edu> wrote:

Nice!!



On Mar 19, 2024, at 8:40 AM, Fatemeh Rahmanifard <F.Rahmanifard at unh.edu> wrote:

Thanks, Mark! Speaking of falling below the previous solar max see attached.

Best,
Fatemeh
________________________________
From: Crater-team <crater-team-bounces at lists.sr.unh.edu<mailto:crater-team-bounces at lists.sr.unh.edu>> on behalf of Harlan Spence <Harlan.Spence at unh.edu<mailto:Harlan.Spence at unh.edu>>
Sent: Tuesday, March 19, 2024 7:28 AM
To: Mark D Looper <mark.d.looper at aero.org<mailto:mark.d.looper at aero.org>>; crater-team at lists.sr.unh.edu<mailto:crater-team at lists.sr.unh.edu> <crater-team at lists.sr.unh.edu<mailto:crater-team at lists.sr.unh.edu>>
Subject: Re: [Crater-team] Another six-month data point on the CRatER GCR LET time series

Fantastic, Mark!  The fall to the new low was so dramatic. If LRO and CRaTER make it to 2031, then we will witness one more solar minimum. Any predictions?  :-)  Quite a ride for what was to be only a one-year mission, conceived, built, and flown so long ago now!  Go LRO!!

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________________________________
From: Crater-team <crater-team-bounces at lists.sr.unh.edu<mailto:crater-team-bounces at lists.sr.unh.edu>> on behalf of Mark D Looper <mark.d.looper at aero.org<mailto:mark.d.looper at aero.org>>
Sent: Monday, March 18, 2024 8:59:52 PM
To: crater-team at lists.sr.unh.edu<mailto:crater-team at lists.sr.unh.edu> <crater-team at lists.sr.unh.edu<mailto:crater-team at lists.sr.unh.edu>>
Subject: [Crater-team] Another six-month data point on the CRatER GCR LET time series

Hello—


                I think I sent you an earlier version of this (with one fewer spectrum) last fall.  I would like to place the LET spectra from our 2020 paper on the Zenodo archive and update the collection as time goes on, with a new spectrum every 6 months.  The most recent spectrum (and the dose rate calculated from it) has fallen well below the previous low mark, set during the solar maximum around 2014.


I have to get permission from the Aerospace legal folks to effect the necessary distribution license on Zenodo; my efforts to obtain this kind of ran dry around AGU time, but I need to start pushing on that Sisyphean rock again, in particular so I can put the GLACE model out there in time to publish the paper about it.  I attach a text file with the spectra and a README file describing its contents, with plots that update the ones in the 2020 paper and that correct an error I made there in combining high-LET bins for better statistics.


Enjoy—
--Mark


Mark D. Looper, PhD
Space Sciences Department
The Aerospace Corporation
M/S M2-260
P.O. Box 92957
Los Angeles, CA 90009-2957
Mobile: 310-529-3406
Voicemail: 310-336-6302
Publications: https://www.loopers.org/curvitae.html
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