<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Dear All,<div dir="ltr"></div><div dir="ltr"></div><div><br></div><div><p dir="ltr" id="docs-internal-guid-80d27c95-7fff-6fc3-f3fa-398990f51314" style="-webkit-text-size-adjust: auto; line-height: 1.38; text-align: justify; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 12pt; font-family: "Times New Roman"; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-position: normal; vertical-align: baseline; white-space: pre-wrap;">NASA’s Geospace Dynamics Constellation (GDC) science team is forming a community group to plan coordinated science between GDC and the worldwide community’s ground-based assets. With a launch NET 2029, GDC would serve as a strategic focus for worldwide, coordinated ITM science. This coordination will involve space-based and ground-based assets, as well as simulations and theory, under the umbrella of the “ITM Great Observatory.” </span></p><br style="-webkit-text-size-adjust: auto;"><p dir="ltr" style="-webkit-text-size-adjust: auto; line-height: 1.38; text-align: justify; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 12pt; font-family: "Times New Roman"; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-position: normal; vertical-align: baseline; white-space: pre-wrap;">The GDC ground-based community group will facilitate coordination of ground-based efforts to leverage GDC measurements to extend and enhance both GDC and broader ITM science objectives.</span></p><br style="-webkit-text-size-adjust: auto;"><p dir="ltr" style="-webkit-text-size-adjust: auto; line-height: 1.38; text-align: justify; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 12pt; font-family: "Times New Roman"; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-position: normal; vertical-align: baseline; white-space: pre-wrap;">We have created a Google survey to collect contact information of people interested in joining this group. </span><span style="font-size: 12pt; font-family: "Times New Roman"; font-weight: 700; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-position: normal; vertical-align: baseline; white-space: pre-wrap;">Please use the link below to join the group and feel free to share this information with other people in the community:</span></p><br style="-webkit-text-size-adjust: auto;"><p dir="ltr" style="-webkit-text-size-adjust: auto; line-height: 1.38; text-align: center; margin-top: 0pt; margin-bottom: 0pt;"><a href="https://forms.gle/2kC3SFt2d85M5AiZ8" style="text-decoration: none;"><span style="font-size: 12pt; font-family: "Times New Roman"; color: rgb(17, 85, 204); font-weight: 700; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-position: normal; text-decoration: underline; text-decoration-skip-ink: none; vertical-align: baseline; white-space: pre-wrap;">https://forms.gle/2kC3SFt2d85M5AiZ8</span></a></p><br style="-webkit-text-size-adjust: auto;"><p dir="ltr" style="-webkit-text-size-adjust: auto; line-height: 1.38; text-align: justify; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 12pt; font-family: "Times New Roman"; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-position: normal; vertical-align: baseline; white-space: pre-wrap;">We will hold our first meeting at the beginning 2023. Subsequent meetings will be held monthly with three different rotating time zones in order to accommodate the worldwide Heliophysics community. The exact date and time of our first meeting will be announced at the end of January 2023.</span></p><p dir="ltr" style="-webkit-text-size-adjust: auto; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 12pt; font-family: "Times New Roman"; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-position: normal; vertical-align: baseline; white-space: pre-wrap;"> </span></p><br style="-webkit-text-size-adjust: auto;"><p dir="ltr" style="-webkit-text-size-adjust: auto; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 12pt; font-family: "Times New Roman"; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-position: normal; vertical-align: baseline; white-space: pre-wrap;">We look forward to working together with the community, </span></p><br style="-webkit-text-size-adjust: auto;"><p dir="ltr" style="-webkit-text-size-adjust: auto; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 12pt; font-family: "Times New Roman"; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-position: normal; vertical-align: baseline; white-space: pre-wrap;">Bea Gallardo-Lacourt</span></p><p dir="ltr" style="-webkit-text-size-adjust: auto; line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 12pt; font-family: "Times New Roman"; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-position: normal; vertical-align: baseline; white-space: pre-wrap;">GDC Ground-Based Coordination Lead</span></p></div></body></html>