Gy. Tóth | 2021-03-31

March 2021

General Announcements

  • IAG 2021
  • Advances in Space Research

Meeting Announcements

  • UN-GGIM Global Geodesy Forum on Earth Day
  • 44th Scientific Assembly of COSPAR and Associated Events COSPAR 2022

Meeting Calendar

IAG Sponsored Meetings

  • 1st ICCC Workshop
  • EUREF 2021 Symposium
  • 19th International Symposium on Geodynamics and Earth Tides (G-ET Symposium 2021)
  • IAG Scientific Assembly
  • The 6th Satellite Soil Moisture Validation and Application Workshop
  • IGS Workshop "IGS 2021: Science from Earth to Space"
  • 20th Assembly of WEGENER
  • 2nd International Symposium of Commission 4: Positioning and Applications

IAG Related Meetings

  • AOGS Annual 18th Meeting

General Announcements

IAG 2021

The IAG Scientific Assembly will be held in Beijing on June 28–July 2, 2021. The Scientific Assembly is a quadrennial event, in the middle of the periods between the IUGG General Assemblies. Due to the ongoing COVID-19 pandemic, the Scientific Assembly will be organized as a virtual meeting. Due to the exceptional and challenging circumstances, it took time to finalize all details and to ensure that we will have a full and high-quality programme.

The Theme of the Symposium is Geodesy for a Sustainable Earth. There will be eight Symposia, with topics covering the activities of IAG Commissions, Services, Inter-Commission Committees and a timely topic on Geohazards. Full list of the scientific programme and sessions therein can be found on the official web site The web site is open for registration and abstract submission.

Important dates and deadlines

(see more details on the web site

Registration Deadline:June 25
Abstract Submission Deadline:April 30
Acceptance of the Abstracts:May 15
Pre-recorded video upload Deadline:June 5
E-poster upload Deadline:June 5
Scientific Assembly:June 28-July 2

The local organizers and the IAG have worked to keep on-line registration fee as low as possible, and IAG individual members receive a discounted fee. For non-IAG members the fee is US$ 150, and for IAG members US$ 75. Abstract submission fee is US$ 40. Additionally, the participation fee will be waived for members of several groups, who must send a request to the Secretary General of the IAG to receive this fee waiver:

  • Full-time students from undergraduate to PhD students, who must also submit a student certificate or letter from their department.
  • Early career scientists (below age 35) if they have an accepted presentation (oral or poster) in the Symposium.
  • Scientists from developing countries.
Opportunity for free, open access publication in the IAG renowned Symposia Series
The Assembly participants are invited to submit an abstract for oral or poster presentation at one of the Symposia. Authors of accepted presentations (oral or poster) are welcome to offer the full paper in the IAG renowned Symposia Series published by Springer. This series is now fully Open Access and the primary mode of publication is on-line (individual papers, and an e-book once all papers are finished). The papers will be on-line and Open Access shortly after each paper is accepted, so that they do not have to wait for the entire volume to be completed. All papers will eventually be searchable through the volume once the volume is finalised. The Open Access fees for the IAG Scientific Assembly participants are covered by the IAG; thus, the first author shall be the participant of the Assembly. The IAG Symposia Series is indexed in Web of Science (book by book) and in Scopus (as a series).

The LOC and SOC have done their best that the Symposium will offer a full experience regardless of the demanding circumstances. We have increased the interactive part of sessions with the possibility of meeting speakers virtually and having discussions with them. Poster sessions will also have interactive possibilities and to ask questions of the authors.

We hope to see you in the IAG Scientific Assembly 2021. You are very warmly welcome.

Markku Poutanen
IAG Secretary General.

Advances in Space Research

Dear colleagues,

for your information, issue 67(1) of Advances in Space Research (COSPAR official journal), was published on January 1, 2021. As a promotional OpenAccess has been provided by Elsevier, all articles of this issue will remain free-of-charge to anyone without any paid subscription to this journal for the complete year at

While it is a very large issue (51 papers and 714 pages), the selected articles below could be of scientific interest to our geodetic community.

I remind you that ASR publishes 24 issues per year (2 issues of 20 or more papers each per month), that accepted papers appear online with a DOI in “accepted proofs” only a couple of days after acceptance and that this journal accepts electronic supplements and supports OpenAccess. Review process takes on average about 9 weeks before the first decision is sent back to the authors (4 weeks to find proper reviewers and 5 weeks to get their report and make a first decision). Published articles are referenced in ISI Web of Science, Scopus and many other scientific databases. This journal also accepts Special Issues. Its Impact Factor has been steadily increasing in the past few years and is now 2.177.

Submissions can be done electronically at any time using the EES System (

More information on this journal can be found at

Pascal Willis
Advances in Space Research


R. Orus-Perez, B. Nava, J. Parro and A. Kashcheyev
ESA UGI (Unified-GNSS-Ionosphere): An Open-source Software to Compute Precise Ionosphere Estimates
Advances in Space Research, 67(1), 56-65, 2021

Jian Feng, Yufeng Zhou, Yan Zhou, Shuaihe Gao, ... and Yi Liu
Ionospheric Response to the 17 March and 22 June 2015 Geomagnetic Storms over Wuhan Region Using GNSS-Based Tomographic Technique
Advances in Space Research, 67(1), 111-121, 2021


Jiangjun Ran, Natthachet Tangdamrongsub and Xiaoyun Wan
The Impact of Error Covariance Matrix Structure of GRACE’s Gravity Solution on the Mass Flux Estimates of Greenland Ice Sheet
Advances in Space Research, 67(1), 163-178, 2021

Jungang Yan, Lining Xing, Pei Wang, Leyuan Sun and Yingwu Chen
A Scheduling Strategy to Inter-satellite Links Assignment in GNSS
Advances in Space Research, 67(1), 198-208, 2021

Min Li, Yunbin Yuan, Baocheng Zhang and Mingming Liu
Estimation of Differential Code Biases with Jason-2/3 Onboard GPS Observations
Advances in Space Research, 67(1), 209-222, 2021

Xiao Gao, Zhiqiang Yang, Yuan Du and Bing Yang
An Improved Real-time Cycle Slip Correction Algorithm based on Doppler-aided Signals for BDS Triple-frequency Measurements
Advances in Space Research, 67(1), 223-233, 2021

Lin Pan, Xiao Gao, Jiahuan Hu, Fujian Ma, ... and Weiwang Wu
Performance Assessment of Real-time Multi-GNSS Integrated PPP with Uncombined and Ionospheric-free Combined Observables
Advances in Space Research, 67(1), 234-252, 2021


Xiaozhou Ye, Wenxiang Liu, Yong Zuo, Wei Wang, ... and Feixue Wang
Analysis of BDS-3 Distributed Autonomous Navigation based on BeiDou System Simulation Platform
Advances in Space Research, 67(1), 401-410, 2021


D. Bortoluzzi, D. Vignotto, A. Zambotti, M. Armano, ... and P. Zweifel
In-flight testing of the injection of the LISA Pathfinder test mass into a geodesic
Advances in Space Research, 67(1), 504-520, 2021

Qiang Xu, Xiaohu Fan, Ai gang Zhao, Hongliang Cui, ... and Bangping Ding
Pre-correction X-ray Pulsar Navigation Algorithm based on Asynchronous Overlapping Observation Method
Advances in Space Research, 67(1), 583-596, 2021

Yongliang Yan
Capacity Building in Regional Space Cooperation: Asia-Pacific Space Cooperation Organization
Advances in Space Research, 67(1), 597-616, 2021


Roberto Furfaro, Riccardo Barocco, Richard Linares, Francesco Topputo, ... and Lucille Le Corre
Modeling Irregular Small Bodies Gravity Field via Extreme Learning Machines and Bayesian Optimization
Advances in Space Research, 67(1), 617-638, 2021


László Szarka, Willie W.-H. Soon and Rodolfo G. Cionco
How the Astronomical Aspects of Climate Science were Settled? On the Milankovitch and Bacsák Anniversaries, with Lessons for Today
Advances in Space Research, 67(1), 700-707, 2021

Meeting Announcements

UN-GGIM Global Geodesy Forum on Earth Day

Every day, humanity benefits from geodesy. An amazing panel of speakers will present the benefits of geodesy to society in a virtual open forum 10.30 am (UTC) on 22 April 2021, Earth Day. 

The Global Geodesy Forum “Power of where: The value of Geodesy to Society” is organized by the UN-GGIM Subcommittee on Geodesy and will focus on the significance of geodesy for the wellbeing and betterment of society, environment and economy. 

Global Geodesy Ambassador

The United Nations Secretary-General's Special Envoy for the Ocean, the Honorable Ambassador Peter Thomson, who is also the Global Geodesy Ambassador, will provide the opening address. 

Ambassador Peter Thomson from Fiji introduced the resolution ‘A Global Geodetic Reference Frame for Sustainable Development’ (A/RES/69/266) to the United Nations General Assembly in 2015. 

Crucial role of geodesy

The forum will also highlight the benefits enabled by an accurate and reliable Global Geodetic Reference Frame (GGRF), and the crucial role of geodesy in providing safer and more resilient communities. Target groups are policy- and decision makers, chief executives, director-generals and senior executives from Member States and relevant stakeholders in the global geospatial community.

If decision makers and donors do not understand the value of an investment in the GGRF, they are unlikely to prioritize GGRF investments above other initiatives

More information and connection details:

Anne Jørgensen

44th Scientific Assembly of the Committee on Space Research (COSPAR) and Associated Events "COSPAR 2022"

Date:  16 - 24 July 2022

Place: Athens, Greece



Abstract Deadline: Mid-February 2022


Approximately 140 meetings covering the fields of COSPAR Scientific Commissions (SC) and Panels:

  • SC A:  The Earth's Surface, Meteorology and Climate
  • SC B:  The Earth-Moon System, Planets, and Small Bodies of the Solar System
  • SC C:  The Upper Atmospheres of the Earth and Planets Including Reference Atmospheres
  • SC D:  Space Plasmas in the Solar System, Including Planetary Magnetospheres
  • SC E:  Research in Astrophysics from Space
  • SC F:  Life Sciences as Related to Space
  • SC G:  Materials Sciences in Space
  • SC H:  Fundamental Physics in Space
  • Panel on Satellite Dynamics (PSD)
  • Panel on Scientific Ballooning (PSB)
  • Panel on Potentially Environmentally Detrimental Activities in Space (PEDAS)
  • Panel on Radiation Belt Environment Modelling (PRBEM)
  • Panel on Space Weather (PSW)
  • Panel on Planetary Protection (PPP)
  • Panel on Capacity Building (PCB)
  • Panel on Education (PE)
  • Panel on Exploration (PEX)
  • Panel on Interstellar Research (PIR)
  • Panel on Innovative Solutions (PoIS)
  • Task Group on Establishing a Constellation of Small Satellites (TGCSS)
  • Special events:  interdisciplinary lectures, round table, etc.

Selected papers published in Advances in Space Research and Life Sciences in Space Research, fully refereed journals with no deadlines open to all submissions in relevant fields.

A. Janofsky
Associate Director

Meetings Calendar

IAG Sponsored Meetings

IAG Related Meetings

Further details are available in the IAG Event Calendar at:

The IAG Newsletter is under the editorial responsibility of the Communication and Outreach Branch (COB) of the IAG. It is an open forum and contributors are welcome to send material (preferably in electronic form) to the IAG COB ( These contributions should complement information sent by IAG officials or by IAG symposia organizers (reports and announcements). The IAG Newsletter is published monthly. It is available in different formats from the IAG new internet site:

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  6. book reviews
  7. fast bibliography

IAG Events