Martin Sehnal
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sehnal.bsky.social
Martin Sehnal
@sehnal.bsky.social
Bringing #Geodesy to the Forefront | Director of #GGOS CO & #IAG Executive Secretary
@iag-ggos.bsky.social
🌍 At the IAG Scientific Assembly #IAG25 with something a bit different!

Come visit me today at Poster P064 to explore fun and insightful 🎨 geodesy cartoons: lnkd.in/gfew2k7p

You can also join the Geodesy Cartoon Competition here: lnkd.in/gzCsnwrH

✨ Let’s bring science and creativity together!
September 4, 2025 at 8:39 AM
Great opportunity for all creative minds! 🎨 If you enjoy drawing, don’t miss this chance to submit your #geodesy cartoon and win exciting prizes!!
📢 Geodesy Cartoon Competition
👉 Read More: https://tinyurl.com/2b9h9n6s

🌍 NEWS #GeodesyScience | #Geodesy #EarthScience #ECS #GGOS #IAG #📰GeneralNews
August 31, 2025 at 7:57 AM
Reposted by Martin Sehnal
📢 Satellite Laser Ranging - How SLR Powers Geodesy
👉 Read More: https://tinyurl.com/25dur5ad

🌍 NEWS #GeodesyScience | #Geodesy #EarthScience #Com1 #Com4 #ECS #GGOS #IAG #ILRS #🌍GeodesyNews
August 26, 2025 at 9:00 AM
Reposted by Martin Sehnal
📱 No position on your phone?
✈️ No navigation in planes?
⚠️ No early warnings?

That could be life without #Geodesy — the invisible science behind #GNSS.

👉 Read More: tinyurl.com/23fpentq
🛰️ Why GNSS matters: geodesy.science/item/gnss
🎨 More Cartoons: geodesy.science/cartoon/
July 21, 2025 at 11:35 AM
Reposted by Martin Sehnal
📢 Call for Abstracts: REFAG2026 - IAG Symposium on Reference Frames for Applications in Geosciences | 🌍 NEWS #GeodesyScience

👉 Read more: geodesy.science/2025/refag20...
Call for Abstracts: REFAG2026 - IAG Symposium on Reference Frames for Applications in Geosciences
The REFAG2026 symposium on reference frames in geosciences will take place in Munich from 2–4 March 2026, followed by the GGOS/IERS UAW. Abstract submissions are open until 15 October 2025. Join us in...
geodesy.science
June 18, 2025 at 11:31 AM
Reposted by Martin Sehnal
🎨 The first #Geodesy #Cartoon 🗻 by @IAG-GGOS
📘 Height systems: geodesy.science/item/height-...
📘 What is #IHRF? geodesy.science/item/height-...
👉 #GeodsyCartoon series: geodesy.science/cartoon/
June 12, 2025 at 10:03 AM
With this fresh design and clear structure, #geodesy is becoming more visible and accessible than ever. A big step forward for our community! Huge thanks to everyone who contributed to the new #IAG and #GGOS website geodesy.science! 🌍✨ @iag-ggos.bsky.social
📣 We’re live! Check out the brand new #IAG website 👉 geodesy.science

🌍 Making #Geodesy more visible, accessible & connected. Focusing on #Geodesy 📰 News, 📅 Events, 💼 Jobs, 👥 Member. More info ⬇️ geodesy.science/2025/new-iag...
June 4, 2025 at 5:00 AM
Reposted by Martin Sehnal
📣 We’re live! Check out the brand new #IAG website 👉 geodesy.science

🌍 Making #Geodesy more visible, accessible & connected. Focusing on #Geodesy 📰 News, 📅 Events, 💼 Jobs, 👥 Member. More info ⬇️ geodesy.science/2025/new-iag...
June 4, 2025 at 4:47 AM
🌍 #Geodesy meets #Cartoons 🎨
Join me this morning at #EGU25 at poster 📍 X1.90

📌 EGU25-1164: Geodesy Cartoons – Engaging the Public through Visual Storytelling

📄 Abstract: lnkd.in/dsHzkic2
🗣️ Give feedback: ggos.org/cartoon/

#EGU25_G @g.egu.eu @iag-ggos.bsky.social @lsanchez.bsky.social
April 30, 2025 at 7:20 AM
A memorable evening at the #Geodesy Reception 2025 during the #EGU25.

Many thanks to everyone who joined us at #BEV in #Vienna for an inspiring night of networking, collaboration, and celebrating the geodesy community.

@iag-ggos.bsky.social @g.egu.eu #EGU_G
April 29, 2025 at 9:03 PM
Reposted by Martin Sehnal
📢 Join us at #EGU25 in Vienna for the 🌍 #GGOS Session!
"Fostering collaboration in #geodesy to address challenges for science & society"

🎯 From essential variables to global risks, outreach, and innovation — don’t miss expert talks & insights!

More info 👉 lnkd.in/dm4KXSNs
April 22, 2025 at 8:23 AM
Reposted by Martin Sehnal
👉 We invite you to get acquainted with the 🌎 Global Geodetic Observing System #GGOS by reading the latest paper published by the GGOS Executive Committee, more information available at: ggos.org/2025/04/10/p...
New Paper Highlights the Power of Geodesy to Support Science and Society |
The global geodetic community has come together to address one of the most pressing needs of our time: monitoring the dynamic Earth system. A new peer-reviewed article, “The Global Geodetic […]
ggos.org
April 10, 2025 at 5:49 AM
Reposted by Martin Sehnal
⏳ Only ONE WEEK left to submit your abstract for the #GGOS Symposia at IAG Scientific Assembly #IAG2025 🚨

The deadline is 📅 March 15, 2025 – don’t miss this opportunity to contribute to the future of #Geodesy.
👉 Check out here: 🔗 eventi.unibo.it/iag2025/abst...
Abstract Guidelines and Submission
IAG Scientific Assembly 2025
eventi.unibo.it
March 5, 2025 at 6:59 AM
Reposted by Martin Sehnal
Just moved! 👋
Follow us to get all your #EGU_geodesy news, including new blog posts and updates during #EGU25.
Hello Bluesky! EGU is pleased to be able to activate our account here, and share all the exciting news about the upcoming General Assembly: #EGU25, our #OpenAccess publications and more! Several of our Divisions will be making the move over from Twitter/X too, so keep an eye out for your favourites!
March 3, 2025 at 8:52 AM
Reposted by Martin Sehnal
🚀 Save the Date! #REFAG2026 + #UAW2026

Join us in Munich 🇩🇪 in March 2026 for two key #geodesy events:
🌐 #REFAG2026 (March 2-4) – Exploring reference frames in #Geodesy & #EarthSciences
🌍 #UAW2026 (March 5-6, by invitation) – #GGOS/#IERS Unified Analysis Workshop

📢 Stay updated: shorturl.at/tZngd
February 24, 2025 at 9:26 AM
Reposted by Martin Sehnal
📅 Save the Date – Join us in 🇸🇪 Gävle, Sweden, for three key #Geodesy events:
🌍 TIGER Symposium (IAG Commission 3: #Geodynamics, #EarthRotation) | Sept 28 – Oct 1, 2026
🌊 #GGOS Topical Meeting on #Geohazards | Oct 1–2, 2026
🌐 #GGOSDays2026 | Oct 5–7, 2026
More info: shorturl.at/5JF3B
Save the Date 2026 - GGOS and Commission 3 Events in Sweden |
Save the Date: - TIGER Symposium in Geodesy (IAG Commission 3) – September 28th to October 1st, 2026 - GGOS Topical Meeting on Geohazards – October 1st and 2nd, 2026 - GGOS Days 2026 – October 5th to ...
shorturl.at
February 24, 2025 at 7:58 AM
Proud to join the 1st #UN Global Geodetic Centre of Excellence #UN-GGCE Capacity Development Workshop in Bonn! 🌍 Representing @iag-ggos.bsky.social & #BEV with my two colleages from Austria. Great to exchange with geodetic experts & strengthen global #geodesy! 🌐✨ ggim.un.org/UNGGCE
February 19, 2025 at 9:12 PM
Reposted by Martin Sehnal
Want to get involved in the International Association of Geodesy #IAG 🌍 and advancing #Geodesy?
✅ Become an IAG member 👉 lnkd.in/dwvic66B
✅ Engage in IAG’s scientific work
✅ Explore IAG’s components 👉 lnkd.in/dvnAd7st
✅ Establish a new IAG component — plan now for #IUGG 2027
📌 More: www.iag-aig.org
February 3, 2025 at 8:15 AM
🚨 Call for Abstracts: #IAG2025 🌍

Highlighting session G11-3: #Communication, #Education & #Outreach in #Geodesy 📢
Showcase innovative approaches to engage the public, foster education & share geodetic knowledge.

📅 Deadline: March 15, 2025
🔗 More info: lnkd.in/dGWqDyvF
👉 Let’s make geodesy visible
January 27, 2025 at 8:38 AM
Reposted by Martin Sehnal
🚨 One week left to submit your abstract for the #GGOS Session G2.3 at #EGU25! 🌍

📜 Join the discussion on #Geodesy role in Earth observation, sustainability, and more.

🕒 Deadline: 15 Jan 2025, 13:00 CET
🔗 Details & Submission: lnkd.in/dm4KXSNs

Don’t miss out! 🚀
January 8, 2025 at 9:26 AM
Reposted by Martin Sehnal
🌍 Join us at the #IAG2025 Scientific Assembly in Rimini 🇮🇹 Italy on 🗓 Sept 1-5, 2025

🔬 14 Symposia, 🌟 4 Highlight Sessions, 🤝 Outreach Symposium

📅 Key Deadlines:
Abstracts: Mar 15, 2025
Early-Bird Reg: May 31, 2025

👉 Details: eventi.unibo.it/iag2025
December 16, 2024 at 1:43 PM
Reposted by Martin Sehnal
Join us on Friday at #AGU24 in the GGOS session:
💡 Learn how J2 variation affects precession models using #SLR data & #VLBI. A deeper look into #IAU 2006 framework uncertainties. 📅 Date: Fri, 13 Dec ⏰Time: 10:30-10:40
🔗Session info: lnkd.in/daB4x4-S
December 9, 2024 at 6:27 AM
Reposted by Martin Sehnal
Join us on Friday at #AGU24 in the GGOS session:
⭐ Explore Earth rotation standards, limitations of #IAU 2000/2006 models, and potential updates for improved accuracy.
📅 Date: Fri, 13 Dec
⏰ Time: 10:40-10:50
🔗 Session info: lnkd.in/daB4x4-S
December 9, 2024 at 6:29 AM
Reposted by Martin Sehnal
What's your frame of reference? We all have one; limited to the knowledge we use to interpret the world, evaluate options and draw conclusions. This week the
UN Global Geodetic Centre of Excellence hosted a workshop on "Joining Land and Sea" with Badan Informasi Geospasial (BIG) Indonesia #geodesy
December 5, 2024 at 5:23 PM
Reposted by Martin Sehnal
🌎 Join us soon at #AGU24: #GGOS session!

📅 Fri, Dec 13
🕙 10:20–11:50
📍 Marquis 1-2 (Marriott Marquis)

Explore geodetic #standards driving accurate #EarthObservation. Topics: Chandler wobble, #Earth Precession and Rotation, #AI for #Geodesy, #VLBI, #DORIS & more!

🔗 Details: shorturl.at/mvXzc
November 28, 2024 at 9:46 AM