Ole Andersen
YOU?
Author Swipe
View article: SWOT Global Bathymetry Modeling Using Deep Neural Networks Trained on Multiple Geophysical Features
SWOT Global Bathymetry Modeling Using Deep Neural Networks Trained on Multiple Geophysical Features Open
This paper presents BathDNN25, a global bathymetry model developed using gravity data derived from wide‐swath altimetry collected by the Surface Water and Ocean Topography (SWOT) mission, with shipborne bathymetry serving as training data …
View article: The role of North Pacific teleconnection in the sea level change of the Canadian Basin
The role of North Pacific teleconnection in the sea level change of the Canadian Basin Open
View article: Surface Water and Ocean Topography (SWOT) Observations Unveil Small Mesoscale Variability on the East Greenland Shelf
Surface Water and Ocean Topography (SWOT) Observations Unveil Small Mesoscale Variability on the East Greenland Shelf Open
In the Arctic, mesoscale ocean processes occur at much smaller scales (5–60 km) than at mid‐latitudes (50–100 km), and conventional altimetry thus only resolves the largest of these signals. Here we show how high‐resolution measurements fr…
View article: Early Analysis of Iceberg-Tsunamis in the Southern Ocean: The Breakup of A-76A Observed by SWOT
Early Analysis of Iceberg-Tsunamis in the Southern Ocean: The Breakup of A-76A Observed by SWOT Open
View article: The DTU25 Mean Sea Surface: From and For SWOT
The DTU25 Mean Sea Surface: From and For SWOT Open
We introduce a new Mean Sea Surface model (MSS) that incorporates the wide-swath altimetry obtained from the Surface Water and Ocean Topography (SWOT) satellite, along with long timeseries of conventional altimetry. The DTU25MSS constrains…
View article: SWOT observations unveil fine-scale dynamics on the East Greenland Shelf
SWOT observations unveil fine-scale dynamics on the East Greenland Shelf Open
View article: SWOT Reveals Detailed Dynamics of Longitudinal River Slope in the Missouri River Basin
SWOT Reveals Detailed Dynamics of Longitudinal River Slope in the Missouri River Basin Open
River water surface slope (WSS) is a crucial variable for a wide range of studies in hydrology, hydraulics, and morphology. However, current in situ and remote sensing methods have limitations in characterizing the WSS of global river syst…
View article: Tidal bore revealed by SWOT: a case study from the Severn river
Tidal bore revealed by SWOT: a case study from the Severn river Open
We utilize Surface Water and Ocean Topography (SWOT) satellite data to derive a complete longitudinal profile of water surface elevations for tidal waves and capture a tidal bore within the Bristol Channel and Severn River system, marking …
View article: HHU24SWDSCS: a shallow-water depth model over island areas in the South China Sea retrieved from satellite-derived bathymetry
HHU24SWDSCS: a shallow-water depth model over island areas in the South China Sea retrieved from satellite-derived bathymetry Open
Accurate shallow-water depth information for island areas is crucial for maritime safety, resource exploration, ecological conservation, and offshore economic activity. Traditional approaches such as shipborne sounding and airborne bathyme…
View article: SWOT-Based Intertidal Digital Elevation Model Extraction and Spatiotemporal Variation Assessment
SWOT-Based Intertidal Digital Elevation Model Extraction and Spatiotemporal Variation Assessment Open
Traditional methods for the construction of intertidal digital elevation models (DEMs) require the integration of long-term multi-sensor datasets and struggle to capture the spatiotemporal variation caused by ocean dynamics. The SWOT (surf…
View article: A new method for determining geoid gradient components from SWOT wide-swath data for marine gravity field
A new method for determining geoid gradient components from SWOT wide-swath data for marine gravity field Open
The Surface Water and Ocean Topography (SWOT) altimeter mission provides a significant opportunity to improve the accuracy of geoid gradients (GGs) and marine gravity fields. This paper presents a new method, namely LSA3, to determine the …
View article: Along‐Track Marine Geoid Resolution Enhancement With SWOT
Along‐Track Marine Geoid Resolution Enhancement With SWOT Open
Satellite altimetry has been the major data source for marine geoid determination·and gravity recovery in recent decades. In general, altimetry‐derived geoid and gravity anomaly models are typically released with a 1' × 1' gridding interva…
View article: Topography prediction from marine gravity and satellite imagery and ship soundings
Topography prediction from marine gravity and satellite imagery and ship soundings Open
SUMMARY Marine observation data are plentiful for constructing seafloor topography, and the integration of multi-sources data to construct a more accurate topography model remains a significant subject that continues to be explored and stu…
View article: Assessment of the Performance of SWOT for Observing the Static Ocean Topography
Assessment of the Performance of SWOT for Observing the Static Ocean Topography Open
Marine geodetic references, such as the mean sea surface (MSS), are currently limited by the spatial resolution of conventional satellite altimeters. We analyze the new swath‐altimetry data from the Surface Water and Ocean Topography (SWOT…
View article: Merging Recent Mean Sea Surface Into a 2023 Hybrid Model (From Scripps, DTU, CLS, and CNES)
Merging Recent Mean Sea Surface Into a 2023 Hybrid Model (From Scripps, DTU, CLS, and CNES) Open
In this paper, we compute a new hybrid mean sea surface (MSS) model by merging three recent models, CNES_CLS22, SCRIPPS_CLS22, and DTU21, and taking advantage of their respective features. The errors associated with these models were asses…
View article: Evaluating the Signal Contribution of the DTU21MSS on Coastal Mean Dynamic Topography and Geostrophic Current Modeling: A Case Study in the African–European Region
Evaluating the Signal Contribution of the DTU21MSS on Coastal Mean Dynamic Topography and Geostrophic Current Modeling: A Case Study in the African–European Region Open
With the accumulation of synthetic aperture radar (SAR) altimetry data and advancements in retracking algorithms, the improved along-track spatial resolution and signal-to-noise ratio have significantly enhanced the availability and precis…
View article: HHU24SWDSCS: A shallow-water depth model over island areas in South China Sea retrieved from Satellite-derived bathymetry
HHU24SWDSCS: A shallow-water depth model over island areas in South China Sea retrieved from Satellite-derived bathymetry Open
Accurate shallow-water depth information for island areas is crucial for maritime safety, resource exploration, ecological conservation, and offshore economic activity. Traditional approaches like shipborne sounding and airborne bathymetri…
View article: Tides in Complex Coastal Regions: Early Case Studies From Wide‐Swath SWOT Measurements
Tides in Complex Coastal Regions: Early Case Studies From Wide‐Swath SWOT Measurements Open
Studying ocean tides with satellite altimetry has traditionally been difficult in coastal regions. The 1 day repeat of the Cal/Val phase of SWOT provides a unique dataset that can be exploited for tidal analysis. In this work, KaRIn data f…
View article: Lake gravity anomalies from ICESat-2 laser altimetry and geodetic radar altimetry
Lake gravity anomalies from ICESat-2 laser altimetry and geodetic radar altimetry Open
In the current most accepted global geopotential model, EGM2008, there are often data gaps in the source data used to compute the model over inland water. As a result, EGM2008 may be less reliable over lakes. Satellite altimetry has the po…
View article: Tides in complex coastal regions: early case studies from wide-swath SWOT measurements
Tides in complex coastal regions: early case studies from wide-swath SWOT measurements Open
Studying ocean tides with satellite altimetry has traditionally been difficult in coastal regions. The 1-day repeat of the Cal/Val phase of SWOT provides a unique dataset that can be exploited for tidal analysis. In this work, KaRIn data f…
View article: Acknowledgement of Reviewers for 2023
Acknowledgement of Reviewers for 2023 Open
View article: A near-global improved gridded multi-mission daily SLA product slightly beyond real-time
A near-global improved gridded multi-mission daily SLA product slightly beyond real-time Open
In order to cover data gaps and mitigate data errors in gridded satellite altimetry both MEaSURES and CMEMSa global products are created using large temporal windows during interpolation, as well as spatial and temporal filtering. In this …
View article: Reconciling ocean mass changes from 20 years of GRACE and GRACE Follow On observations
Reconciling ocean mass changes from 20 years of GRACE and GRACE Follow On observations Open
The total mass change of the Earth's land surface precisely offsets the combined changes in the atmosphere and oceans, resulting in a net-zero change for the entire system (land+ocean+atmosphere).Closing the ocean mass budget is crucial fo…
View article: Mapping directional sea surface slopes associated with seamounts from SWOT and validation with ICESat-2
Mapping directional sea surface slopes associated with seamounts from SWOT and validation with ICESat-2 Open
Observations from satellite altimeters are essential to mapping the marine gravity field and bathymetry. As most of the ocean basins are yet to be mapped by sonar, obtaining reliable data of sea surface height and sea surface slopes is key…
View article: Ocean tides from SWOT: insights in complex coastal regions
Ocean tides from SWOT: insights in complex coastal regions Open
Studying ocean tides from satellite altimetry has traditionally been difficult in coastal regions, mainly due to the complexity of tides in these regions, limited spatial coverage, and land contamination of the radar returns. The Cal/Val p…
View article: Causes of Global Elastic Vertical Land Movement from 1900 to 2022
Causes of Global Elastic Vertical Land Movement from 1900 to 2022 Open
Elastic vertical land movement (eVLM) is the lithosphere's immediate elastic response to the loading and unloading of the Earth's surface mass. Understanding eVLM is crucial for interpreting relative sea level changes, particularly in coas…
View article: Consistent Mean Sea Surface and sea level change estimation in the Era of Climate Change – application to SWOT processing. 
Consistent Mean Sea Surface and sea level change estimation in the Era of Climate Change – application to SWOT processing.  Open
Since the beginning of the precision satellite altimeter era in the early 1990s, efforts have been focused on computing the mean height of the ocean surface for use in various geodetic and oceanographic studies. With 30 years of satellite …
View article: Coastal tides and tidal Bore in the Severn Estuary from fast-sampled SWOT data
Coastal tides and tidal Bore in the Severn Estuary from fast-sampled SWOT data Open
Satellite altimetry is instrumental in deciphering the dynamics of oceans and coastal regions. It yields indispensable data critical for monitoring global sea levels, predicting wave heights, and charting the courses of ocean currents and …
View article: Comment on egusphere-2023-3030
Comment on egusphere-2023-3030 Open
Abstract. Due to the presence of sea ice, determining the sea surface height in the Arctic Ocean remains a significant challenge. State-of-the-art Arctic Mean Sea Surface (MSS) products are primarily derived from radar alt…
View article: Global and regional ocean mass budget closure since 2003
Global and regional ocean mass budget closure since 2003 Open
In recent sea level studies, discrepancies have arisen in ocean mass observations obtained from the Gravity Recovery and Climate Experiment and its successor, GRACE Follow-On, with GRACE estimates consistently appearing lower than density-…