CEDAR email: Announcement: 9th SCOSTEP/PRESTO online Seminar by Dr. Richard Eastes

D Pallam Raju raju at prl.res.in
Fri Aug 20 03:07:59 MDT 2021

Dear Colleagues,

Greetings !!

We are pleased to announce the 9th SCOSTEP/PRESTO online seminar by Dr. 
Richard Eastes.

Seminar Title: Space Weather in the Thermosphere-Ionosphere System - 
observations and Insights from the GOLD* Mission (*Global-scale 
Observations of the Limb and Disk)

Speaker: Dr. Richard Eastes

Affiliation: Laboratory for Atmospheric and Space Physics, University of 
Colorado Boulder, USA

Date/time: September 23, 2021; 14:00-15:00 UT  via Zoom

To join the seminar, please register using the zoom URL given below 
(pre-registration is necessary): 


The GOLD mission’s spatial-temporal observations of thermospheric 
composition, density, and temperature, as well as of ionospheric 
structure and peak density at low-latitudes, provide an unprecedented 
window into space weather in the Thermosphere-Ionosphere (T-I) system. 
Imaging the Earth from geostationary orbit at 47.5°W longitude, the GOLD 
imager provides simultaneous images of thermospheric composition (O/N_2 
) and temperature near 160 km on the dayside every 30 minutes from 06:10 
to 23:10 UT (03:00-20:00 local time at the satellite). In addition GOLD 
images the nighttime equatorial ionization anomaly (EIA) over the 
Atlantic and South America every evening. Observations of geomagnetic 
storms, solar eclipses, the nighttime EIA and O_2 density profiles have 
all provided unanticipated results. Examples include observations of 
“gravity” waves and global-scale responses to weak geomagnetic activity 
in the sunlit thermosphere; and in the nighttime EIA, correlations 
between peak densities and waves in the mesosphere. These observations 
provide tests of our current understanding of both the T-I system and 
how it interacts with other regions of the geospace system. The GOLD 
mission observations and some of the implications for space-weather will 
be discussed.

- Duggirala Pallamraju

(On behalf of Pillar-2 of PRESTO & SCOSTEP leadership)

*Prof. D. Pallamraju *
Senior Professor and Dean, PRL
Chairman, Space and Atmospheric Sciences Division, PRL
Physical Research Laboratory,
Navrangpura, Ahmedabad 380 009, INDIA
Email: raju at prl.res.in; dean at prl.res.in; URL: http://www.prl.res.in/~raju/
Phone: +91-79-26314658/4863/4861; Fax: +91-79-26314659
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