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<p class="xxxmsonormal"><span style="font-size:12.0pt">Dear colleagues,<o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt">We enthusiastically announce a massive repository of ELF/VLF/LF radio data collected over decades at sites all over the world by Stanford University, Georgia Tech, and University of Colorado Denver. As
recently written up in EOS (<a href="https://eos.org/science-updates/returning-lightning-data-to-the-cloud">https://eos.org/science-updates/returning-lightning-data-to-the-cloud</a>), the database is known as the World Archive or Low-frequency Data Observations,
WALDO, and can be accessed at <a href="http://waldo.world">http://waldo.world</a>. I don’t know about you, but I can’t think of anything more fun to do during a pandemic quarantine than analyze ELF/VLF/LF data!<o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt">These data already include or will include many valuable recordings, amongst them<o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<ul style="margin-top:0in" type="disc">
<li class="xxxmsonormal" style="margin-left:.25in;mso-list:l0 level1 lfo3"><span style="font-size:12.0pt">Antarctic recordings at Palmer Station and South Pole over decades<o:p></o:p></span></li><li class="xxxmsonormal" style="margin-left:.25in;mso-list:l0 level1 lfo3"><span style="font-size:12.0pt">Siple Station Antarctica experiment recordings from 1974-1986<o:p></o:p></span></li><li class="xxxmsonormal" style="margin-left:.25in;mso-list:l0 level1 lfo3"><span style="font-size:12.0pt">Alaska VLF recordings in conjunction with HAARP experiments<o:p></o:p></span></li><li class="xxxmsonormal" style="margin-left:.25in;mso-list:l0 level1 lfo3"><span style="font-size:12.0pt">VLF/LF Data from the 2017 Great American Solar Eclipse<o:p></o:p></span></li><li class="xxxmsonormal" style="margin-left:.25in;mso-list:l0 level1 lfo3"><span style="font-size:12.0pt">Narrowband data from global IHY/ISWI/AWESOME receivers<o:p></o:p></span></li><li class="xxxmsonormal" style="margin-left:.25in;mso-list:l0 level1 lfo3"><span style="font-size:12.0pt">VLF recordings preceding the 2011 Tohoku M9.0 earthquake<o:p></o:p></span></li><li class="xxxmsonormal" style="margin-left:.25in;mso-list:l0 level1 lfo3"><span style="font-size:12.0pt">Our hope is for the broader community to think of new ways to analyze these datasets that have not been previously considered.<o:p></o:p></span></li></ul>
<p class="xxxmsonormal"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt">The raw data are in a common format and available for direct download, along with quick-look plots. WALDO includes detailed data descriptions and some available scripts (Matlab with python coming soon)
to view and analyze the data.<o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt">WALDO is jointly managed by Georgia Tech (Morris Cohen) and University of Colorado Denver (Mark Golkowski). Currently there are nearly 200 TB of data, with many 100s more TBs awaiting upload in the coming
weeks and months. Currently we are focusing on uploading data previously collected by Stanford University’s VLF group (stored on 10s of thousands of DVDs), but will also be augmenting it with more recent data collected by CU-Denver and GaTech’s receiver networks.
If there a specific dataset you know was recorded that is not yet up at WALDO that you would like to see, please contact us. We can let you know if it still exists, and/or prioritize it if you have a specific interest.</span><o:p></o:p></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt">We encourage anyone interested in ELF/VLF and wanting to work with data to use the data. We are happy to answer any questions about the data, as well, or interested in any feedback in how the WALDO portal
is working.<o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt">We also welcome anyone else collecting ELF/VLF data who would like to join WALDO and contribute their data as an official partner, please contact Morris Cohen (<a href="mailto:mcohen@gatech.edu">mcohen@gatech.edu</a>)
and Mark Golkowski (<a href="mailto:mark.golkowski@ucdenver.edu">mark.golkowski@ucdenver.edu</a>)<o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt">-Morris Cohen, Georgia Tech<o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt">-Mark Golkowski, University of Colorado Denver<o:p></o:p></span></p>
<p class="xxxmsonormal"><span style="font-size:12.0pt"><a href="http://waldo.world">http://waldo.world</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">__________________<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">Morris B. Cohen, Ph. D.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">Associate Professor, Electrical and Computer Engineering<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">Georgia Institute of Technology<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">President-Elect, Atmospheric and Space Electricity Section<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">American Geophysical Union<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt">LF Radio Lab: <a href="http://lf.gatech.edu/">
<span style="color:#0563C1">http://lf.gatech.edu</span></a></span><o:p></o:p></p>
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