DOI: 10.5281/zenodo.3885547
title: Poker Flat Incoherent Scatter Radar (PFISR) Observations of E-region Neutral Winds

description: This file contains Poker Flat Incoherent Scatter Radar (PFISR) E-region Neutral Winds Data. This is associated with a submission to the Journal of Geophysical Research and once the article is accepted, I will put in the DOI for that article. These data correspond to monthly data files that include the E-region neutral winds and other parameters for the from March 2013-June 2019. These data were processed from the following files found in: https://data.amisr.com/database/tmp/Kaeppler/winds/ and https://data.amisr.com/database/tmp/Kaeppler/missing_IPY.tar.gz Please note that the error on the line of sight velocities may have been overestimated in these data and we scaled them by a eVLOS/sqrt(10). Interested persons should contact Ashton Reimer or Roger Varney at SRI International for more information about these data, please see amisr.com If you plan to work with the data, I would appreciate it if you would contact me via email. We are very interested in collaborating. <strong>File Documentation:</strong> <strong>Please see the change log:</strong> v0.5.1 - 10-23-2019: changed chi square to 0.01 for lower boundary v0.5.3 - 12-02-2019: Added in that now passing in the Chi2 and Fitcode filtering by Config file<br> Bigger change that I am scaling the AC dVlos by some sort of factor while Ashton figures this out.<br> We decided that a conversative scaling would be to reduce the dVLOS by 1/sqrt(10).<br> The chi square produced in the data Ashton sent me typically was around 0.01, so the uncertaintiies on the LOS velocities<br> may be over estimated. So we are just changing this as a temporary fix while Ashton fixes the uncertainty estimation. v0.5.5 02 01 2020 - Added in calculation of Coriolis, Centrifugal, and Lorentz forcing<br> v0.5.5 02 10 2020 - Added a correction to qvert so that way I can calculate the lorentz term.<br> Found an error where qvert = 0 in the if statement goes to false. v0.5.5 02 15 2020 - Put in nuInscaler into the main program, scaling ALL kappas by the scaler number v0.5.6 02 28 2020 -- Added some more vlos diagostics and the calculation of the scale height. Added Altitude offset v0.5.6.2020.03.12_nuin_fracoff - testing putting in the Brekke formula for ion neutral collision frequency and took out frac v0.5.7.2020.04.10 - Put in Ashton's revised ion neutral collision frequency formulas into IO.<br> Also wrote a testscript and at least for the file I used was only different by 2.5%.<br> Revised where the mag data is being pulled from since the URL is deprecated<br> Added in Kappa which is now being interpolate - plan to see where kappa =1 is located for the paper.<br> commented out nuin scaler just so I am not chasing my tail test v0.5.7.2020.04.13_org commented back in original ion neutral collision frequency method<br> possible mistake that not summing up properly. test v0.5.7.2020.04.13_newnuin_orgsum_noTr800 - new formula for nuin except took off Tr&gt;800.<br> I expect this should be almost the same as before since the formulas are basically the same.<br> did the original sum using frac[0] and frac[1] want to see if I am underestimating v0.5.7.2020.04.13_newnuin_orgsum_yesTr800 - same as above except now including Tr&gt;800. 'v0.5.7.2020.04.13_newnuin_newsum_noTr800' - using the new sum now and new col freq v0.5.7.2020.04.13_updatedorg - updated original uses original method but including the NO term v0.6.0.2020.04.15 -- Now think I have the new ion neutral collision frequency working and validated.<br> Found a mistake in how I was calculating the ion neutral collision frequency that<br> the fraction weight I was using only included the O+ and O2+ terms and not NO+<br> Turns out I was basically weighting by about 0.5, so I was effectively reducing the<br> ion neutral collision frequency by about a factor of 0.5 or less...<br> From this point forward need to start using any results from &gt; v0.6<br> This revision has changed previous results signi v0.6.0.2020.04.21 -- updated to now include the temperature correction for the O2+ v0.6.1.2020.04.23 -- made a number of changes to the geomagnetic files and reprocessed from CDAweb.<br> Wrote new code to be able to process the files from CDAweb in the new format.<br> Also changed the geomagnetic data files v0.6.1.2020.06.07 -- changed the generation of Monthly files to hopefully be in order now<br> Added in missingIPY files given to me by ashton, maybe improve data covarege<br> Some work going to need to be done to make sure that all of the 10, 15, and 20 minute data are there.