Copenhagen, Denmark, 2022

Nordic Geodetic Commission

General Assembly,

Copenhagen 5-8.9.2022 (the group photo)

Minutes of General Assembly

NKG structure 2022-2026_final


NKG Bylaws_adopted_8_september_2022

Planet Ocean and Geodesy

6/9 Tuesday

Welcome and opening of the General Assembly              

Opening by NKG President Markku Poutanen – Opening speech and passed away members of NKG (2018-2020)

DTU Space director Henning Skriver (DTU Space)

Head of dept. Thorbjørn Nielsen (SDFI) – SDFI Welcome

Local organizing Committee (practical information) – Local organizing Committee (practical information)

Session #1: Planet ocean and geodesy

Chair: Niels Andersen, Co-chair: Ole Baltazar Andersen

Invited Speaker: Ole Baltazar Andersen – Invited speaker – Planet Ocean, Geodesy for Sea level and Climate

Panel debate: Geodesy in perspective of Climate Changes – with Secretary General Markku Poutanen (IAG) as convener, Prof. Jens Hesselbjerg Christensen (KU), Chief Research Consultant Andreas Ahlstrøm (GEUS), and Prof. Ole Baltazar Andersen (DTU)

Kristian Breili – The evolution of sea-level rates along the Norwegian coast from 1960 to 2100

Maaria Nordman – Future sea level rise on the Finnish coast and its implications

Vahidreza Jananmard – Examining mean dynamic topography using geodetic and oceanographic approaches for the Baltic Sea

Session #6: Geodetic infrastructure

Chair: Hannu Koivula, Co-chair: Pasi Häkli

Kristian Evers – Something is rotten in the state of geodesy

Kent Ohlsson – Reference network in the air 2.0

Mehdi Darvishi – InSAR-based Ground Motion Service of Sweden: evaluation and benefit analysis of a nationwide InSAR service

Faramarz Nilfouroushan – Status report on the installations of geodetic SAR corner reflectors in Sweden

Mohammad Bagherbandi – A new approach for reducing physical and geometric effects in small-scale geodetic control networks

Tõnis Oja – Monitoring the stability of height network in Tallinn using Sentinel-1 data

Hannu Koivula – Metsähovi Geodetic Research Station

Mirjam Bilker-Koivula – Renewal of the Finnish calibration line for relative gravimeters

Session #4: Future Positioning Services and Applications

Chair: Casper Jepsen, Co-chair: Gro Grinde

Søren Skaarup Larsen – GNSS based leveling with cm accuracy using TAPAS

Morten Taraldsten Brunes – Hybrid positioning service with GNSS SSR and 5G

Mehdi Eshagh – Optimal design of GNSS interference localisation wireless security network

Kibrom Ebuy Abraha – Monitoring and detection of GNSS signal interferences using SWEPOS – The Swedish CORS network

Martin Håkansson – Prepare Ships – safer navigation at sea enabled by precise GNSS positioning

Madara Normand – Space weather impact on GPS positioning results in Latvia

Karina Hansen – Terrain corrected snow thickness from GNET using GNSS-IR

7/9 Wednesday

Session #2: Geodynamics and Earth Observation

Chair: Holger Steffen, Co-chair: Madara Znotiņa

Holger Steffen – WG GEO status

Rene Forsberg – New Satellites for Gravity Field and Environmental Modeling – Quantum geodesy on the way

Mirjam Bilker-Koivula – The NKG absolute gravimeter intercomparison in Onsala

Gudmundur Valsson – Earthquakes and eruptions in the Reykjanes peninsula

Holger Steffen – Towards an official NKG model of glacial isostatic adjustment in northern Europe

Joanna Balasis-Levinsen – Validation of Compact Active Transponders used for ground deformation monitoring

Jaakko Mäkinen – Fennoscandian Land Uplift Gravity Lines Revisited

Shfaqat Abbas Khan – Centennial response of Greenland’s three largest outlet glaciers

Carsten Bjerre Ludwigsen – Change in Ice Loading, Vertical Land Motion and Coastal Sea Level

Halfdan Kierulf – Glacial induced uplift variations in Svalbard – is it a challenge for the reference frame?

Majid Abrehdary – On using satellite altimetry and gravimetric data in mapping the Moho constituents for Fennoscandia

Valentina Barletta – Effect of Icelandic hotspot on Mantle viscosity below Kangerlussuaq glacier in SE-Greenland

Session #3: Future Height Systems and Geoid

Chair: Ove Christian Dahl Omang, Co-chair: Mirjam Bilker-Koivula

Ove Christian Dahl Omang – WG Future Height System and Geoid Report 2018 – 2022

Thomas Hammarklint – Baltic Sea Chart Datum 2000

Asha Vincent – Unifying height systems using chronometric levelling

Jonas Ågren – Investigation of the difference between a preliminary national IHRS realisation for Sweden and the EVRS realisation RH 2000

Lars Sjöberg – The topography as a geoid validation problem

Tim Jensen – Recent Airborne Gravity Surveys in Denmark and their Impact on Geoid Computations

Olav Vestøl – Separation models in Norway

Session #5: Reference frames

Chair: Pasi Häkli, Co-chair: Hannu Koivula

Pasi Häkli – NKG Working Group of Reference Frames

Rebekka Steffen – EUVEM2022:A 3D GNSS Velocity field for Europe

Karine Le Bail – Understanding the change in the VLBI scale behavior detected in the ITRF2020

Sonja Lahtinen – ITRF densifications for the Nordic and Baltic countries

Thomas Knudsen – What is a CRS really? A geodetic view of the ISO/OGC geospatial data model: Broken, but not beyond repair

Martin Lidberg – Future positioning services, geodetic reference frames and the ISO Geodetic Registry

Tobias Nilsson – Test of global alignment of the NKG EPN solution

Karin Kollo – Estonian-Latvian cooperation: project GeoRefAct

8/9 Thursday

National reports

Poster Session

Anna Puggard – On the use of randomly occurring radar reflectors for the establishment of local ties between InSAR and GNSS

Carsten Bjerre Ludwigsen – Link to: #2 Global, Local, and Seasonal Sea-Level Reconstruction of 30 Years of Sea-Level Observations

Christina Naja Tvilling Jensen – Improvement of GNSS Interferometric Reflectometry processing to improve studies of sea level change

Dan Norin – Use of GNSS for the review of the national boundary between Sweden and Norway

Danjal Longfors Berg – Link to: #5 Vertical Land Motion due to present-day ice loss from Greenland’s peripheral glaciers

Gabriel Strykowski – Automated 2014-2019 Marine Gravity Surveys in Danish Waters: The Cross-Survey Modelling and Beyond

Halfdan Pascal Kierulf – Seasonal glacier and snow loading in Svalbard recovered from geodetic observations

Ivar Kapsi – Sea-level rise on the coast of the Baltic Sea

Janis Kaminskis – Local network stability monitoring for SLR Riga station

John Dehls – The Copernicus European Ground Motion Service (EGMS): GNSS + InSAR on a continental scale

Jaakko Mäkinen – Link to: #11 The First Order Gravity Net of Finland

Karine Le Bail – Link to: #12 – The geodetic core site Onsala Space Observatory

Kristian Breili – Link to: #13 – An almost 30-year long time series of the global mean sea level from satellite altimetry

Kristian Keller – How to prepare the fit of a Gravimetric Geoid to a National Height Reference

Kristian Keller – The Retreival of a Secret Geodetic Backup Burried in Greenland in 1952

Lars Hole – Land boundary delimitation in the high North, Tartupaluk (Hans Ø)

Lars Stenseng – Link to: #17 DANGO -Unleashing the potential of Galileo High Accuracy Service

Lenne-liisa Heinoja – Link to: #18 – Examining the performance of satellite altimetry along track sea level data for Sentinel-6, Jason-3 and Sentinel-3

Majid Mostafavi – Link to: #19 – Reconstruction of Dynamic Topography Using Cyclostationary Empirical Orthogonal Functions in the Baltic Sea

Majid Mostafavi – Satellite Altimetry Based Absolute Dynamic Topography Prediction Using Machine Learning in Baltic Sea

Majid Mostafavi – Absolute Sea Level Trend Forecasting using an Ensemble Empirical Mode Decomposition Method

Matea Tomic – Validation of conventional and retracked Sentinel-3 observations along the Norwegian coast

Maxime Mouyen – Strategies to remove hydrological effects in continuous gravity time series

Mehdi Eshagh – A daily spatiotemporal estimator for downscaling GRACE gravity models for terrestrial water storage and groundwater storage estimation

Ole Baltazar Andersen – Link to: #25 – DTU global offshore vertical reference surfaces (DTU21MSS and DTU21LAT)”

Ove Christian Dahl Omang – IMU + a car: continuous relative land gravity measurements?

Pasi Häkli – Updated NKG2020 transformation for the Nordic and Baltic countries

Per-Anders Olsson – Experiences and results from 5 years of measurement with Lantmäteriet’s ZLS dynamic gravimeter

Rebekka Steffen – Recent advances in the modelling of glacial isostatic adjustment – A report from the IAG Joint Study Group on “Geodetic, Seismic and Geodynamic Constraints on Glacial Isostatic Adjustment

Saeed Rajabi-Kiasari – Link to: #30 Machine learning Forecasting of Absolute Dynamic Topography in the Baltic Sea

Sander Varbla – Link to: #31 – Sea level measurements by a low-cost GNSS sensor-equipped marine buoy

Sander Varbla – Link to: #32 – Iterative refinement of regional marine geoid models using sea surface height and dynamic topography datasets

Sarah Beeck – Link to: #33 – Space weather impact maps for GNSS scintillations

Thomas Knudsen – A platform for experiments with geodetic software

Thomas Knudsen – System 34 revisited: Faking a datum for fun and profit

Thomas Papanikolaou – Precise Orbit Determination and accelerometry calibration modelling of the GRACE Follow-On mission

Tõnis Oja – Link to: #37 – GRAVS2 – processing software of relative gravity data