GGOS - Global Geodetic Observing System @IAG_GGOS
This is the account of GGOS, the Global Geodetic Observing System of the IAG. For Updates please follow @iag_geodesy geodesy.science Earth Science Joined September 2016-
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📢 Geodesy Cartoon Competition | 🌍 NEWS #GeodesyScience 👉 Read More: tinyurl.com/25secq8a #Geodesy @iag_geodesy @theIUGG tinyurl.com/25secq8a
📢 Satellite Laser Ranging - How SLR Powers Geodesy | 🌍 NEWS #GeodesyScience 👉 Read More: tinyurl.com/2dc683tx #Geodesy @iag_geodesy @theIUGG tinyurl.com/2dc683tx
📢 South African National Geodesy Workshop 👉 Read More: tinyurl.com/2y4k3434 🌍 NEWS #GeodesyScience | #Geodesy #EarthScience @iag_geodesy @theIUGG #GGOS #IAG #Other #📅EventUpdate tinyurl.com/2y4k3434
📢 Call for IAG proposals - IUGG Support Program of Scientific Meetings in 2026 | 🌍 NEWS #GeodesyScience 👉 Read More: tinyurl.com/24arqgg4 #Geodesy @iag_geodesy @theIUGG tinyurl.com/24arqgg4
📢 GGOS Days 2025 - Invitation | 🌍 NEWS #GeodesyScience 👉 Read More: tinyurl.com/2braw6qn #Geodesy @iag_geodesy @theIUGG tinyurl.com/2braw6qn
📢 Geodesy Virtual School 2025 - Summary | 🌍 NEWS #GeodesyScience 👉 Read More: tinyurl.com/28z7xpfu #Geodesy @iag_geodesy @theIUGG tinyurl.com/28z7xpfu
📱 No position on your phone? ✈️ No navigation in planes? ⚠️ No early warnings? That’s life without #Geodesy — the invisible science behind #GNSS. 🛰️ Why GNSS matters: geodesy.science/item/gnss 🎨 More Cartoons: geodesy.science/cartoon/ 👉 Read More: ... tinyurl.com/23fpentq
📢 A new atomic clock in space could help us measure elevations on Earth| 🌍 NEWS #GeodesyScience 👉 Read More: tinyurl.com/27kzt3dl #Geodesy @iag_geodesy @theIUGG tinyurl.com/27kzt3dl
📢 IAG News - Now Available on Telegram| 🌍 NEWS #GeodesyScience 👉 Read More: tinyurl.com/24y6hql4 #Geodesy @IAG_GGOS @theIUGG tinyurl.com/24y6hql4
📢 GGOS at #AGU25 – Call for Abstracts| 🌍 NEWS #GeodesyScience 👉 Read More: tinyurl.com/22u7hnhf #Geodesy @iag_geodesy @theIUGG tinyurl.com/22u7hnhf
📢 Call for Abstracts: REFAG2026 - IAG Symposium on Reference Frames for Applications in Geosciences | 🌍 NEWS #GeodesyScience 👉 Read more: geodesy.science/2025/refag2026… #Geodesy @IAG_GGOS @theIUGG
📣 Your go-to calendar for #Geodesy EVENTS is here! 📅 Explore the new @IAG_GGOS EVENTS page 🗓️ 👉 geodesy.science/events/ Conferences, workshops & more — all in one place. #Geodesy #IAG #GGOS #Geoscience #ScienceEvents @iag_geodesy @theIUGG
💼 Looking for a job in #geodesy — or want to share one? The new @IAG_GGOS JOBS page is live! 👉 geodesy.science/jobs/ 📬 Subscribe for updates: geodesy.science/news/#mailing-… 📣 Post your job: geodesy.science/jobs/post/ @iag_geodesy @theIUGG #geodesyJobs #Hiring #ScienceJobs
🎨 The first #Geodesy #Cartoon 🗻 by @IAG-GGOS 📘 Height systems: geodesy.science/item/height-sy… 📘 What is #IHRF? geodesy.science/item/height-re… 👉 #GeodsyCartoon series: geodesy.science/cartoon/ @IAG_geodesy @theIUGG
📰 Stay up to date — the new @IAG_GGOS NEWS page is live! 👉 geodesy.science/news/ 📬 Subscribe for updates incl. the #IAG #Newsletter (PDF) 📣 Got news? Share it with the #geodesy community! 🔗 geodesy.science/news/post/ @iag_geodesy @theIUGG
📣 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-w…
👉 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/pap…
📅 Save the Date – Join us in 🇸🇪 Gävle, Sweden, for three key #Geodesy events: 🌍 TIGER Symposium (Com3: #Geodynamics, #EarthRotation) | Sept 28 – Oct 1, 2026 🌊 #GGOS Topical Meeting on #Geohazards | Oct 1–2, 2026 🌐 #GGOSDays2026 | Oct 5–7, 2026 Info: shorturl.at/5JF3B

Geodesy for Climate @IAG_climate
948 Followers 75 Following Inter-Commission Committee of the International Association of Geodesy (@iag_geodesy) on "Geodesy for Climate Research" (ICCC)
EGU Geodesy @EGU_Geodesy
2K Followers 85 Following Official twitter/X account for the EGU Geodesy Division. This account is no longer active. To find out about Geodesy activities please visit https://t.co/hE8DJtvSPl
Annette Eicker @annette_eicker
604 Followers 365 Following Professor at HafenCity University Hamburg, using #geodesy to study system Earth. The account is no longer monitored.
Matt King @DeformedEarth
3K Followers 2K Following Solid-earth deformation, geodesy, ice sheets, and sea level. Director @AntarcticSciAus. Professor at U Tasmania. Comments mine. Flawed follower of Jesus.
EarthScope Consortium @EarthScope_sci
57K Followers 883 Following EarthScope Consortium is a new organization formed by the merger of UNAVCO and IRIS. Operator of the NSF GAGE and NSF SAGE Facilities. #NSFfunded
International GNSS Se... @IGSorg
3K Followers 430 Following Follow us on LinkedIn: https://t.co/d9LabKN3HM #geodesy4impact #GNSS4impact
IUGG @theIUGG
2K Followers 198 Following The International Union of Geodesy and Geophysics is the international organization dedicated to the promotion of Geodesy and Geophysics
Rebekka Steffen @rebekka_geo
350 Followers 326 Following Geodesist/Geophysicist working at Lantmäteriet. Mom of 2. Views are my own. (at)rebekka_geo(at)fediscience(dot)org
Jürgen Kusche @JurgenKusche
608 Followers 119 Following Geodesist, interested in global water cycle, sea level, gravity field, thermosphere. Professor at University of Bonn. Views are my own.
AGUGeodesy @AGUGeodesy
1K Followers 181 Following Geodesy (The Most Awesome) Section of AGU: All the news and activities related to the AGU Geodesy Section that is fit to tweet
Mahdiyeh Razeghi @MahdiyehGeo
380 Followers 450 Following Research fellow @ANUWaterFutures; study water variations over the Earth surface and underground.
Faramarz Nilfourousha... @FNilfouroushan
1K Followers 746 Following Senior Lecturer at University of Gävle & Senior Geodesist at Lantmäteriet; Interests mostly: GNSS and InSAR. Tweets my own. Mastodon: @[email protected]
JIVE ERIC director @jivedirector
1K Followers 1K Following Agnieszka (Aga) Slowikowska is the director of JIVE ERIC since January 2023.
IVS: Int. VLBI Servic... @IVS_OOC
326 Followers 122 Following The IVS Office of Outreach and Communication (IVS OOC) https://t.co/Z5mirt3WWr
نظم المعلوم... @gis_eductation
13K Followers 5K Following | نشر المعرفة GIS | مؤتمرات | ورش_العمل | كتب | المنتديات| اعلانات | دورات_GIS | كتابة محتوى في مجال الجغرافيا و(GIS)🌐🌐 [email protected]
GeomaticsKSA @GeomaticsK
5K Followers 14 Following مبادرة تطوعية لنشر ما يهتم بعلمي #المساحة و #الجيوماتيكس وتبسيط محتواهما - إشراف المهندس خالد العرينيhttps://t.co/eRkfaBnCRx
Instituto Geográfico... @IGNSpain
48K Followers 1K Following Cuenta oficial del IGN, organismo oficial del @transportesgob que genera la información geográfica de España y la distribuye a través de: https://t.co/cvGOemPj7A
Mirjam Bilker-Koivula @mirjambilker
408 Followers 434 Following Research group manager at @fgi_nls @maanmittaus #FGIGEOGEO and Prof. of Practice @AaltoGeoinfo @AaltoUniversity #geodesy #gravity #geoid #metrology 🇳🇱🇫🇮🇪🇺
IGN ARGENTINA @ARGENTINAIGN
9K Followers 203 Following Organismo Estatal que representa oficialmente el territorio argentino a través de la producción y publicación de información geoespacial.
Dino Marcos Favatier ... @gilgamesh_srX
102 Followers 120 Following Marino en retiro. Geógrafo esp. en Análisis de Imágenes Satelitales y SIG. Tatengue. Desde 2014 en TW pero Elon me bloqueó, es un honor si me sigues (no kukas).
Muhammad Akhtar @MAkhtar201
1 Followers 51 Following
Jeanne Volkman @jeanne_vol4047
46 Followers 3K Following
Chandeler @chandeler_king
3 Followers 47 Following
FaHaD NayyaF @Fahad_Nayyaf
199 Followers 385 Following فما توفيقي الا بربي الله ....... شغوف للعلم رحم الله من علمني حرف رحم الله من اهدالي عيوب. اللهم متعنى برؤيتك
Олег Олег @gY087pNZxYjEmDH
0 Followers 40 Following
Jose Moraga @jamp__19__89
0 Followers 19 Following
José Andrés Alcánt... @Dr_JaALCANTARAA
8 Followers 531 Following
nan @NanSe424
9 Followers 321 Following
Ibaad Anwar @IbaadAnwar
0 Followers 44 Following
AbdulAzeez Saliu #Dat... @Podosci
602 Followers 1K Following Data Scientist|Ml Engineer || The AI uprising is coming
Peter Obiefuna.M @obiefuna_m
90 Followers 993 Following AI 🤖 | Lover of Christ|Community MG📉||Entrepreneur|| sales and marketing strategy |Branding|| Google Adsense publisher ||Optimist || Facebook ads|Geoscience
Shaolin Lü @shaolin_bit
0 Followers 52 Following
Marcelo Asenjo @Ouioihbc
0 Followers 9 Following
PITCHXIXITO @Pitchxixito
14 Followers 303 Following
Marta Koch @Marta__Koch
153 Followers 3K Following PhD Researcher @ImperialCollege I Population,Policy & Practice Dpt./Engineering for Int. Developmnt Cntr @UCL I UN Consultant | @UNFCCC @UNEP @UNDESA Delegate
Denis Yermalovich @DYermalovi90621
329 Followers 7K Following
Narendraprasath @itismenaren369
34 Followers 1K Following
Greg Helmer @gahelmer
37 Followers 73 Following
Jungang Wang @wang_jungang
0 Followers 90 Following
Elijah Amuseh @ThryveonAmuseh
4 Followers 29 Following Full-Stack Developer | UI/UX Designer | Building SaaS tools for real-world impact | Currently @UnifiedMentor | Founder in progress
2 التفرقه سل... @moustafacairo1
2K Followers 7K Following مصري قلباً وقالباً 😍 Founder TST , CEO United Co. & Consulting Eng مجموعة سواركو النمسا للحلول المرورية للشرق الاوسط/ساداتي السياسة/اهلاوي/صعيدي سوهاج/ممنوع 🐑
drislam @drislam77
49 Followers 982 Following
Richard Oswaldo Peña... @Richardologyst
9 Followers 293 Following Geologist by trade, I read time etched in stone. A melomaniac at heart, I hear symphonies in silence. Cinema is my refuge - languages my 🔥
Warren Youngclaus @airnavsvce1
151 Followers 431 Following
mbena2023 @mbena2023
2 Followers 33 Following
Valerij Grasic @ValerijGra
65 Followers 940 Following
المعهد القو... @NRIAG
26K Followers 119 Following A National Astronomical & Geophysical Sciences Research establishment since 1839, Explore the Universe & Earth with us.
Claudiu Adrian Buciu @claudiu_a_buciu
31 Followers 557 Following
Bilal Osman @1bilosman
3 Followers 48 Following
Xiaokang Rao @xkrwhu
4 Followers 123 Following PhD from Wuhan Unversity, China/ United Kingdom. My research is about geodesy/GNSS/InSAR/LiDAR, dynamic monitoring, earthquakes and am looking for a postdoc.
spherefix terry @SpherefixTerry
5 Followers 71 Following Provide GNSS receivers and measuring instruments of high quality. https://t.co/zbw0lCw5XO
tawyteixeira @tawyteixeira
2 Followers 103 Following
Thetough @ThetoughIWB6A9
46 Followers 914 Following Tell you a good way to heal yourself: enjoy busyness and adapt to loneliness
Geofísica Internacio... @Geofisica_Inter
14 Followers 70 Following Quarterly scientific journal published since 1961.
KANENAS🎗️📟 @kanenas_gr
637 Followers 7K Following Hellas / --🇬🇷} #DevSecOps / Rvrse Engineering Master of Science in Engineering in Systems Engineering
yume @YumeCo4u
1 Followers 109 Following
Lotfi Massarweh @lotfiM14
0 Followers 35 Following
sunchaser @sunchaser835
27 Followers 57 Following
SUNJAY @sunjaybhugeo
498 Followers 6K Following Geophysics,Hydrocarbon Upstream Researcher,Integrated Geoscientist -Wavelet Analysis -Geophysical data.
IusHumanitario @IusHumanitario
124 Followers 772 Following La paz no significa ausencia de guerra....por una verdadera justicia transicional...!
Geodesy for Climate @IAG_climate
948 Followers 75 Following Inter-Commission Committee of the International Association of Geodesy (@iag_geodesy) on "Geodesy for Climate Research" (ICCC)
EGU Geodesy @EGU_Geodesy
2K Followers 85 Following Official twitter/X account for the EGU Geodesy Division. This account is no longer active. To find out about Geodesy activities please visit https://t.co/hE8DJtvSPl
Annette Eicker @annette_eicker
604 Followers 365 Following Professor at HafenCity University Hamburg, using #geodesy to study system Earth. The account is no longer monitored.
Copernicus EU @CopernicusEU
135K Followers 2K Following The Earth Observation component of the EU Space Programme
Matt King @DeformedEarth
3K Followers 2K Following Solid-earth deformation, geodesy, ice sheets, and sea level. Director @AntarcticSciAus. Professor at U Tasmania. Comments mine. Flawed follower of Jesus.
European Geosciences ... @EuroGeosciences
54K Followers 847 Following Official account for the EGU. This account is no longer active or monitored. Visit our website to find out more about our activities or ask a question.
NASA JPL @NASAJPL
3.8M Followers 125 Following The Jet Propulsion Laboratory manages many of NASA's robotic missions exploring Earth, the solar system, and our universe. (Verification: https://t.co/iicDVgZd2m)
International GNSS Se... @IGSorg
3K Followers 430 Following Follow us on LinkedIn: https://t.co/d9LabKN3HM #geodesy4impact #GNSS4impact
IUGG @theIUGG
2K Followers 198 Following The International Union of Geodesy and Geophysics is the international organization dedicated to the promotion of Geodesy and Geophysics
Rebekka Steffen @rebekka_geo
350 Followers 326 Following Geodesist/Geophysicist working at Lantmäteriet. Mom of 2. Views are my own. (at)rebekka_geo(at)fediscience(dot)org
GPS World @GPSWorld
12K Followers 417 Following Our magazine has been publishing news about the business and technology of global navigation and positioning since 1990.
AGUGeodesy @AGUGeodesy
1K Followers 181 Following Geodesy (The Most Awesome) Section of AGU: All the news and activities related to the AGU Geodesy Section that is fit to tweet
Institute of Navigati... @UniStuttgartNAV
1K Followers 279 Following Tweets from the Institute of Navigation (INS). Follow to learn about #positioning, #navigation, #timing, #airtraffic, #drones and much more.
IVS: Int. VLBI Servic... @IVS_OOC
326 Followers 122 Following The IVS Office of Outreach and Communication (IVS OOC) https://t.co/Z5mirt3WWr
EUMETSAT @eumetsat
45K Followers 2K Following European operational satellite agency for monitoring weather, #climate and the environment from #space 🛰️
UN-GGIM @UNGGIM
4K Followers 136 Following
Space Geodesy, ETH Zu... @SpaceGeodesyETH
501 Followers 95 Following Chair of Space Geodesy Prof. Benedikt Soja Inst. of Geodesy and Photogrammetry Dept. of Civil, Env. and Geomatic Engineering ETH Zurich
Benedikt Soja @b_soja
394 Followers 102 Following Asst. Prof. of Space Geodesy @ ETH Zurich @SpaceGeodesyETH
MarSeh @seh_mar
7 Followers 28 Following
Andres Calabia, PhD @AndresCalabia
186 Followers 336 Following Earth Observation, Geodesy, and Planetary and Space Science. Assistant Professor at @UAHes
Esther Azcue @EAzcue
2 Followers 1 Following
Aletha De Witt @alethadewitt
9 Followers 58 Following
Pablo Ortega @PabloOrtega_Geo
1 Followers 16 Following
George Vergos @vergos
75 Followers 435 Following
E. Sinem Ince @inceelm
35 Followers 83 Following Earth sciences, geodesy, gravity field @ GFZ-Potsdam @ ICGEM
DGFI-TUM @DgfiTum
207 Followers 61 Following Deutsches Geodätisches Forschungsinstitut der Technischen Universität München (DGFI-TUM)
Geo @ TU Wien @geodepartment
794 Followers 61 Following
Onsala Space Obs @OnsalaRymd
729 Followers 63 Following Onsala rymdobservatorium, Sveriges nationella anläggning för radioastronomi. Onsala Space Observatory, Sweden's national facility for radio astronomy.
Rozsa Szabolcs @rozsa_szabolcs
36 Followers 76 Following Assoc. Prof. in Satellite Geodesy at BME (@BME_en). Dean of Faculty of Civil Engineering.
Positioning Insights ... @GNSS_Insights
339 Followers 374 Following All Things GPS/GNSS Positioning, PNT, Alternate PNT and more
Samuel Akande, PhD @olusamakande
631 Followers 4K Following Earth System Scientist || Climatologist || Advocates #climateresilience || Co-developed @earwac || Geodesy & Geomatics Engineer (GNSS) || SAR/InSAR Specialist
IACS @iacscryo
2K Followers 161 Following International Association of Cryospheric Sciences (IACS). Science of glaciers, sea ice, snow, ice sheets, permafrost, planetary ice, etc. 1/8 IUGG Associations
Sônia Costa @SniaCos91225013
29 Followers 56 Following Survey Engineer, Works at IBGE, mother of two cute girls. Enjoy Nature. @SirgasGeodesia @IBGE_RBMC
GET_geodesy&geophysic... @GET_2g
189 Followers 35 Following Earth deformation and inner structure, geodynamics, geophysical modelling and imaging, precise positioning, static and dynamic gravity field
Krzysztof @sosnica
158 Followers 41 Following I'm a celestial mechanician. My job is to explain how and why artificial Earth satellites move.
Zoho Social @ZohoSocial
109K Followers 184 Following #SocialMediaManagement software for businesses and agencies. Part of the @Zoho suite.
GCOS Climate @gcos_un
744 Followers 68 Following The Global Climate Observing System is co-sponsored by @wmo, IOC-UNESCO, UNEP and ISC. Advocate-Coordinate-Communicate. Keeping watch over our climate.
FIG @FIG_NEWS
2K Followers 30 Following FIG is an international, non-government organisation whose purpose is to support international collaboration for the progress of surveying in all fields.
ESSP @ESSPSAS
2K Followers 860 Following European Satellite Services Provider. We are the #EGNOS service provider. ESSP offers the provision of space-based CNS services and promotes its deployment.
Inside GNSS @insideGNSS
2K Followers 980 Following INSIDE GNSS covers the global navigation satellite systems: GPS, Galileo, GLONASS, BeiDou, regional and augmentation systems and related technologies.
Nicholas Brown @nich0lasBr0wn
965 Followers 1K Following Head of Office | United Nations Global Geodetic Centre of Excellence
Hansjörg Kutterer @KuttererH
72 Followers 75 Following
Allison Craddock @allisonordnung
396 Followers 934 Following @IGSorg secretariat director + @IAG_GGOS external relations lead // #geodesy4impact #GNSS4impact // @NASAJPL systems engineer // Opinions = mine (she/her)
Laura Sanchez @ls3nchez
163 Followers 361 Following
AGGO - CONICET @AConicet
232 Followers 48 Following Official Account of The AGGO-CONICET Observatory for Research in Geodesy Cuenta oficial de AGGO-CONICET Observatorio Argentino-Alemán de Geodesia
EVGA IVS @EVGAIVS
34 Followers 37 Following
vlbi.at @AtVlbi
43 Followers 7 Following Vienna Center for VLBI: Scheduling, correlation and analysis of VLBI observations
Geo++ @GeoppCompany
144 Followers 20 Following System conception, development, and analysis of GNSS-based positioning for static and kinematic applications in geodesy and navigation.
Chris Rizos @c_rizos
821 Followers 40 Following Emeritus Professor, School of Civil & Environmental Engineering, UNSW, Sydney, Australia; President-elect of the International Union of Geodesy & Geophysics.
Wael Zakout @wzakout
91 Followers 141 Following
Dr. Stuart Minchin @sminchin
641 Followers 133 Following Dr. Stuart Minchin is currently the Director General of the Pacific Community (SPC), which is working to improve the lives of all people in the Pacific.
Disasters Charter @DisastersChart
11K Followers 285 Following Satellite data to support disaster response worldwide
Josef Aschbacher @AschbacherJosef
36K Followers 1K Following @ESA Director General - taking European space to the next level
GNSGeodesy @GNSGeodesy
1K Followers 259 Following We are the geodesy group at GNS (@ijhamling @gpsRuna @Nev_P @yunmengCao @betchamanma, Chris Rollins, and Laura Wallace). We use geodesy to track deformation!
ARCHIVED - NASA Lands... @NASA_Landsat
78K Followers 437 Following We’ve moved! Visit https://t.co/ObKiWKvAMz or follow @NASAEarth & @NASAGoddard for future Landsat updates.
André Obregón @obregonandree
232 Followers 396 Following Senior Technical Officer @CopernicusECMWF | “If you want to go fast, go alone. If you want to go far, go together.”