<div dir="ltr">Hi again,<div><br></div><div> Please note an error in the original announcement (and email title) - the lecture is on</div><div><br></div><div>MONDAY November 22, 2021</div><div><br></div><div> I've corrected this in the text below. Apologies.</div><div><br></div><div>Regards,</div><div>Phil</div><div><br></div><div>Hi all,<br><br> On behalf of MIT Haystack Observatory, we are pleased to announce the 22nd Annual Michael J. Buonsanto Memorial Lecture. This event will be broadcast online via Zoom, and the link will be posted to the lecture series page before the event. In-person attendance is extremely limited this year; please RSVP to <a href="mailto:heidij@mit.edu">heidij@mit.edu</a> if you plan to attend at Haystack.<br><br> Buonsanto Memorial Lecture Series home page:<br><br><a href="https://www.haystack.mit.edu/buonsanto">https://www.haystack.mit.edu/buonsanto</a><br><br> This year's lecture is presented by<br><br>Jan J. Sojka<br>Center for Atmospheric and Space Sciences<br>Department of Physics<br>Utah State University<br><br>Lecture Date/Time: <br>Monday, 22 November 2021<br>3:00 p.m. Eastern Standard Time (20:00 UTC)<br><br>Title:<br>Would a present-day ionospheric servo model improve on Michael’s 1986 ionospheric servo study? <br><br>**** Abstract:<br><br> Michael Buonsanto’s 1986 ionospheric servo study provides an excellent starting point to appreciate Michael’s unique aeronomy insights and ability to harness “tools” to advance our knowledge in space science. These tools included Rishbeth’s servo equation, Hedin’s MSIS, conjugate ionosonde observations, and of course FORTRAN. Michael’s study was ambitious, involving seasonal dependences, solar cycle dependences, and conjugate hemisphere dependences of the midlatitude wind fields. On these conjugate field-lines, the issue of topside fluxes was also of key importance. His clear description of how the aeronomy processes are interdependent and hence constrained his ionospheric servo model are noteworthy. A feature all too often missing from today’s studies is his careful error analysis.<br><br>Today these aeronomy processes are still the foundation of our understanding; however, 35 years onwards, our observational databases are hugely improved. The presentation will focus on the total electron content (TEC) database of the MIT Haystack Madrigal data repository—an archive I’m sure Michael would have had great satisfaction exploring with his servo concepts and models.<br><br>This difference in data coverage and cadence restricted Michael and other researchers from probing the ionosphere-thermosphere drivers beyond a climatology level. Using the Madrigal TEC, an ionospheric servo will be tested to better understand how difficult it still is to extract knowledge about the ionospheric drivers. These are, in fact, the same drivers Michael was targeting with his servo analysis. This modern servo is shown to have challenges similar to those Michael faced in 1986.<br><br>========<br><br> The Buonsanto Lecture's frontier science topic is directly relevant to anyone interested in Earth's atmosphere, whether neutral or ionized. Students, professors, and researchers from the international atmospheric science community are encouraged to attend. <br><br> The lecture will be live-streamed beginning at 3 pm EST (20 UTC) at this Zoom link:<br><br><a href="https://mit.zoom.us/s/97204386336">https://mit.zoom.us/s/97204386336</a><br><br> The link will also be available on the Buonsanto Lecture series web page above.<br><br>Regards,<br>Phil<br></div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div><div>-----</div><div>Philip Erickson, Ph.D.</div><div>Atmospheric and Geospace Sciences Group</div><div>MIT Haystack Observatory</div><div>Westford, MA 01886 USA</div><div><br></div><div>email: <a href="mailto:pje@haystack.mit.edu" target="_blank">pje@haystack.mit.edu</a></div><div>WWW: <a href="http://www.haystack.mit.edu" target="_blank">http://www.haystack.mit.edu</a></div><div>voice: +1 617 715 5769</div><div>fax: +1 781 981 5766</div><div><br></div><div>Public key: <a href="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x54878872" target="_blank">http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x54878872</a></div></div></div><div><br></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Nov 3, 2021 at 12:03 PM Phil Erickson via Cedar_email <<a href="mailto:cedar_email@mailman.ucar.edu">cedar_email@mailman.ucar.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi all,<br><br> On behalf of MIT Haystack Observatory, we are pleased to announce the 22nd Annual Michael J. Buonsanto Memorial Lecture. This event will be broadcast online via Zoom, and the link will be posted to the lecture series page before the event. In-person attendance is extremely limited this year; please RSVP to <a href="mailto:heidij@mit.edu" target="_blank">heidij@mit.edu</a> if you plan to attend at Haystack.<br><br> Buonsanto Memorial Lecture Series home page:<br><br><a href="https://www.haystack.mit.edu/buonsanto" target="_blank">https://www.haystack.mit.edu/buonsanto</a><br><br> This year's lecture is presented by<br><br>Jan J. Sojka<br>Center for Atmospheric and Space Sciences<br>Department of Physics<br>Utah State University<br><br>Lecture Date/Time: <br>Thursday, 22 November 2021<br>3:00 p.m. Eastern Standard Time (20:00 UTC)<br><br>Title:<br>Would a present-day ionospheric servo model improve on Michael’s 1986 ionospheric servo study? <br><br>**** Abstract:<br><br> Michael Buonsanto’s 1986 ionospheric servo study provides an excellent starting point to appreciate Michael’s unique aeronomy insights and ability to harness “tools” to advance our knowledge in space science. These tools included Rishbeth’s servo equation, Hedin’s MSIS, conjugate ionosonde observations, and of course FORTRAN. Michael’s study was ambitious, involving seasonal dependences, solar cycle dependences, and conjugate hemisphere dependences of the midlatitude wind fields. On these conjugate field-lines, the issue of topside fluxes was also of key importance. His clear description of how the aeronomy processes are interdependent and hence constrained his ionospheric servo model are noteworthy. A feature all too often missing from today’s studies is his careful error analysis.<br><br>Today these aeronomy processes are still the foundation of our understanding; however, 35 years onwards, our observational databases are hugely improved. The presentation will focus on the total electron content (TEC) database of the MIT Haystack Madrigal data repository—an archive I’m sure Michael would have had great satisfaction exploring with his servo concepts and models.<br><br>This difference in data coverage and cadence restricted Michael and other researchers from probing the ionosphere-thermosphere drivers beyond a climatology level. Using the Madrigal TEC, an ionospheric servo will be tested to better understand how difficult it still is to extract knowledge about the ionospheric drivers. These are, in fact, the same drivers Michael was targeting with his servo analysis. This modern servo is shown to have challenges similar to those Michael faced in 1986.<div><br></div><div>========<br><br> The Buonsanto Lecture's frontier science topic is directly relevant to anyone interested in Earth's atmosphere, whether neutral or ionized. Students, professors, and researchers from the international atmospheric science community are encouraged to attend. <br><br> The lecture will be live-streamed beginning at 3 pm EST (20 UTC) at this Zoom link:<div><br></div><div><div><div><a href="https://mit.zoom.us/s/97204386336" target="_blank">https://mit.zoom.us/s/97204386336</a><br></div><div><br></div><div><div> The link will also be available on the Buonsanto Lecture series web page above.</div><div><br>Regards,<br>Phil<br><div><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div><div>-----</div><div>Philip Erickson, Ph.D.</div><div>Atmospheric and Geospace Sciences Group</div><div>MIT Haystack Observatory</div><div>Westford, MA 01886 USA</div><div><br></div><div>email: <a href="mailto:pje@haystack.mit.edu" target="_blank">pje@haystack.mit.edu</a></div><div>WWW: <a href="http://www.haystack.mit.edu" target="_blank">http://www.haystack.mit.edu</a></div><div>voice: +1 617 715 5769</div><div>fax: +1 781 981 5766</div><div><br></div><div>Public key: <a href="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x54878872" target="_blank">http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x54878872</a></div></div></div><div><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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