→ 11th COASTAL ALTIMETRY WORKSHOPCoastal Altimetry Training

PROGRAMME
12–15 June 2018 | ESA–ESRIN | Frascati (Rome), Italy

TRAINING COURSE
Tuesday 12 June 2018
Moderators: Marcello Passaro, Marco Restano, Stefano Vignudelli, Jérôme Benveniste

Training course Objectives
1 Introduce the challenges and progresses of coastal altimetry to a non-expert audience
2 Provide a description and an application of existing coastal-dedicated datasets
3 Explain the synergies of Coastal Altimetry with other coastal observing systems
Time
8:45

Title

Lecturer

Welcome and Introduction

Jérôme Benveniste and Marcello Passaro

THEORY
9:00

From Range Retrieval to Sea Surface Height Anomaly

Remko Scharroo

Although the sea surface height anomaly is the prime variable of interest to a lot of users, it is in fact a (very much) derived quantity that includes, besides the altimeter
range, a host of corrections based on observations as well as models. It is of great importance to understand the source and limitations of those corrections to properly
evaluate the strength and weaknesses of altimetry in the coastal domain. In addition, depending on your application, some of those corrections should be invoked, ornot, or one of various alternatives provided on the product should be used. This presentation aims to give an overview of the available corrections, their derivation, theirlimitations in the coastal domain, and their applicability to a number of applications.

9:40

Mean Sea Surface, Geoid and Tides at the coast

Marie-Hélène Rio

Mean Sea Surface, Mean Dynamic Topography, geoid and tides are all key elements for the optimal exploitation of altimeter data in oceanography. When approaching thecoast, a number of specific issues arises that may result in less accurate estimates of the altimeter derived absolute dynamic topography. In this lecture we will review themain challenges to be faced in coastal areas as well as the state-of-the art solutions for a precise determination of these reference surfaces and the tidal signal.

10:20
10:50

Coffee BreakMeasuring Waves, Wind and Sea State Bias at the Coast

Doug Vandemark

We will address specific differences in both technical and geophysical aspects of wind-wave investigation within 100 km of the coast, when compared to open ocean
altimeter application of sea state, wind speed, and the sea state bias range correction measurements. A survey of the applications for high resolution and long-termcoastal altimeter sea state data will be discussed in the context of both coastal modeling and prediction as well as process studies. Past and present approaches toimprove these satellite measurements for users will be summarized.

DATASET & APPLICATIONS
11:30

Hands on Satellite Altimetry in Synergy for Coastal Models

John Wilkin

Using coastal altimetry in conjunction with a data assimilative high-resolution coastal ocean forecasting system: re-definition of the Mean Sea Surface close to thecoast, improving Mean Dynamic Topography, reconciling sea level datum with tide gauges, and consistency in model and data physics (to DAC, or not to DAC). Practicalconsiderations for near real time operations and automation.

12:20

Lunch

13:30

ALES and Coastal Sea Level

Marcello Passaro

In this lecture, the characteristics of the available altimetry product derived from the ALES algorithm will be described, with particular focus on data access and format.
Example of use will be provided. A comparison of along-track coastal mean sea surface vs currently available mean sea surface models along an altimetry track is foreseen.
Moreover, examples will be shown on how scientists have used the ALES data for coastal sea level analysis.

14:20

XTrack and Synergy with Remote Sensing Data

Fabien Léger

X-TRACK has been developed in order to optimize the completeness and the accuracy of the sea surface height information derived from satellite altimetry in coastal
ocean areas. It is tailored for extending the use of altimetry data to coastal ocean applications and provides freely available along-track Sea Level Anomaly time series
that cover all the coastal oceans. This presentation proposes to present the X-TRACK products (both sea level and tidal harmonic estimations) and show how to computedifferent diagnostics as well as how they can be used in different coastal applications (coastal ocean circulation studies, mesoscale feature monitoring, regional model
validation, tidal analysis,...).

15:10
15:40

Coffee BreakTAPAS and Synergy with Coastal Models

Claire Dufau

Thanks to regular interactive workshops gathering altimeter experts and regional modelers, Tailored Altimetry Products for Assimilation Systems (TAPAS) are proposedin the MyOcean/CMEMS catalogue since 2013. These Sea Level Anomalies products allow regional modelers to change the physical content of the altimeter measurement
in consistency with their model capabilities and characteristics, considerably improving the results of the assimilation of the altimeter measurement into such models. In
this lecture, we will describe the TAPAS products, their content, their format and how to use them. A synthesis of the most recent outcomes of the TAPAS working groupwill provide examples of their use and present new experimental datasets.

SAR ALTIMETRY
16:30

SAR Altimetry Concepts

Walter H. F. Smith

Currently, the CryoSat-2 and Sentinel-3 altimetery satellites can collect data in either conventional (“LRM”, like Jason-3) or “SAR” mode, and Jason-CS/Sentinel-6 (tolaunch in 2020) will provide both simultaneously. The SAR mode data can be processed to narrow the instrument’s “view” of the surface, with potential advantages in the
coastal zone. This lecture will introduce SAR altimetry concepts and acquaint the audience with the concepts and jargon (for example, “Doppler”, “multi-looking”, “Hamming
window”, “coherence”) needed to understand the data processing options.

17:20

SARvatore and Progress in SAR Altimetry Applications

Salvatore Dinardo and Marco RestanoIn this lecture, we will address the different methodologies to process L1A data up to L2 in SAR mode, describing the most cutting-edge techniques which have beendeveloped in the recent years and their relative applications. An introduction to ESA/ESRIN GPOD platform, SARvatore service for CryoSat-2 and Sentinel-3 and other
Radar Altimetry services will be given and it will be featured what GPOD platform can offer to users and how users can expand the environment and deploy their own
applications in the system.

18:10

Wrap-up and Networking Ice-Breaker Refreshment Session

19:30

Evacuate premises and meet for dinner all together

PROGRAMME
Wednesday 13 June 2018

DAY 1

Opening Session
9:00

Welcome and Introduction (Jérôme Benveniste)

9:15

Overview of Coastal Altimetry Workshop achievements (Paolo Cipollini)

9:40

Session 1A: Technical Issues in Coastal Altimetry - Retracking

CHAIRS: Marcello Passaro, Marco Restano

Compared performances of current altimetry missions over coastal areas

P. Thibaut, M. Raynal, M. Ablain, F. Boy, N. Picot, T. Guinle,
P. Femenias

Wednesday 13 June 2018
10:00

DAY 1

Two Years of Coastal SAR and PLRM Altimetry in the North East Atlantic With
Sentinel-3A and CryoSat-2

S. Dinardo, L. Fenoglio, C. Buchhaupt, R. Scharroo, M.J.
Fernandes, M. Becker, J. Benveniste

Coffee Break

10:20-10:50

Session 1A: Technical Issues in Coastal Altimetry - Retracking (cont’d)

CHAIRS: Marcello Passaro, Marco Restano
M . Passaro, W.H.F. Smith, C. Schwatke, G. Piccioni, D. Dettmering

11:10

Validation of a Global Dataset Based on Subwaveform Retracking: Improving thePrecision of Pulse-Limited Satellite Altimetry
Assessing Sentinel-3 Wave Height Records in the Coastal Zone

11:30

Coastal Improvements for Tide Models: the Impact of ALES Retracker

G. Piccioni, D. Dettmering, M. Passaro, C. Schwatke, W. Bosch, F. Seitz

11:50

Bathymetry Improvement and Tidal Modelling at Regional Scales in the NEA and inIndonesia

M. Cancet, F. Toublanc, F. Lyard, G. Dibarboure, T. Guinle

10:50

12:10-12:30

F. Nencioli, G. Quartly, D. Conley

S1 Poster Flashes (2 mn - 2 slides )Contribution of Waveform Decontamination for Improving Coastal Altimetric Sea
Surface Heights
An Assessment of a Coastal Altimetry Data Product in the Indonesian Waters

H. Wang, Y. Chu, C.K. Shum

Improvement of the Arctic Ocean Bathymetry and Regional Tide Atlas –a CP4O Initiative

M. Cancet, O. Andersen, D. Cotton, J. Benveniste

J. Lumban-Gaol, S. Vignudelli, R. Leben, D. Adrian, O. Takahiro,
I. Nurjaya, B.P. Pasaribu

Wednesday 13 June 2018

DAY 1

Sentinel-3 SAR Altimetry Over Coastal and Open Ocean: Performance Assessment
and Improved Retrieval Methods in the ESA SCOOP Project

D. Cotton, T. Moreau, M. Raynal, E. Makhoul, M. Cancet,
L. Fenoglio-Marc, M. Naeije, M.J. Fernandes, C. Lazaro, A. Shaw,
M. Restano, A. Ambrosio, J. Benveniste

Comparison of Altimetric Datasets Along the Greenland Coast

J. Hausman, I. Fenty, J. Nilsson, K. Madsen, P. Knudsen

Coastal Retracking Using Along-Track Waveform Echograms in Seas of Indonesia

K. Ichikawa, X. Wang

12:30-12:50

Discussion on the Technical Issues in Coastal Altimetry (Session 1A)

12:50-14:00

Lunch
Session 1B: Technical Issues in Coastal Altimetry - Corrections,
Calibration & Products

CHAIRS: Kaoru Ichikawa, Graham Quartly

Impact of Geophysical Corrections on Altimetry Sea Level Estimations Near the Coast

F. Birol, F. Niño, F. Léger, F. Blarel

14:00

ALL

15:00

On the Need for High-Rate Range Corrections for Satellite Altimetry Studies OverJ. Fernandes, N. Pires, T. Vieira, E. Vieira, C. LázaroCoastal and Inland Water Regions
The High-Resolution Microwave Radiometer (HRMR) on Sentinel-6: Measuring Path S. Brown, A. Tanner, S. Padmanabhan, I. Ramos, P. Kangaslahti,
Delay in the Coastal Zone
Calibrating SAR SSH of Sentinel-3A and CryoSat-2 over the Corsica Facilities
P. Bonnefond, O. Laurain, T. Guinle, N. Picot, P. Féménias

15:20

From Level-2 Algorithms to High-Resolution Altimeter Products to Better Observe
Ocean Dynamics in Coastal Areas

14:20
14:40

Y. Faugere, M-I. Pujol, M. Ablain, C. Ubelmann, C. Dufau,
N. Picot, G. DibarboureWednesday 13 June 2018

DAY 1

15:40-15:50

Discussion on the Technical Issues in Coastal Altimetry (Session 1B)

15:50-16:20

Coffee BreakALL

Session 2A: Application of Coastal Altimetry Data

CHAIRS: Jesús Gómez-Enri, Salvatore Dinardo

16:20

Investigating Altimeter and Tide-Gauge Sea Level Differences with CryoSat-2 andSentinel-3A

L. Fenoglio, S. Dinardo, C. Buchhaupt, B. Uebbing, R. Scharroo,
M.J. Fernandes, J. Kusche, M. Becker, J. Benveniste

16:40

Validity of Sentinel-3 SAR Wind and Wave Data near the Coast

S. Abdalla, J-R. Bidlot

17:00

Detection of Intraseasonal Oscillations in the Indian Ocean from Satellite Altimetry S. Bulusu, C. Trott, V.S.N. Murty

17:20-17:50

S2 Poster Flashes (2 mn - 2 slides )Absolute Water Levels at the Estuary of the Karnaphuli River (Bay of Bengal,
Bangladesh) : Comparison Between Sea / River Surface Heights Gained by GNSS
Survey and Satellite Altimetry in Coastal Environment
Evaluation of Coastal Sea Level Change Near Hong Kong from Jason-2 Altimetry

M. Ishaque, S. Calmant, D. Moreira, F. Durand, L. Testut,
Y. Krien, V. Ballu, F. Papa

Last Developments and Perspectives of the X-TRACK Regional Altimeter Products

F. Léger, F. Birol, F. Niño, S. Fleury, M. Passaro

On the Use of Sentinel-3A SRAL Altimeter Waveforms at the Finest Posting Rate
(80 Hz) for the Detection of Ships

J. Gómez-Enri, R. Mulero, S. Vignudelli, A. Scozzari

X. Xu, F. Birol, A. CazenaveWednesday 13 June 2018

17:50-20:00

DAY 1

Sea Level Anomalies and Mesoscale Activity Using Altimetry Along the African
Coasts in the Eastern Tropical Atlantic Ocean (OSTST Alti-ETAO Project)

H.B. Dieng, I. Dadou, F. Léger, F. Birol, F. Lyard, Y. Morel, A.
Chaigneau

Inter-Comparison of Different Altimetric Datasets Through Spectral Analysis:
Application to the Dynamics of Bay of Biscay and New Caledonia

M-L. Dabat, N. Ayoub, F. Marin, L. Gourdeau, G. Sérazin,
F. Léger, F. Birol

The First Results of Monitoring the Ice Cover of the Sea of Okhotsk in 2015-2016
According to the Measurements of the Radar Cross Section at Small Incidence
AnglesSynergy Between Coastal Altimetry Data and Land-based High-Frequency (HF)
RadarsCoastal Region Applications from Satellite Altimetry Missions

M. Riabkova, V. Karaev, A. Maksimov

Use of Satellite Altimetry and Moderate Resolution Imaging Technology of Flood
Extent to Support Seasonal Outlooks of Nuisance Flood Risk Along United States
Coastlines and Managed Areas
Tracking of Eddy Propagation in the Southern Luzon Strait

V. Ransi, D. Pirhalla, S. Sheridan

F. Oliveira, P.L. Mazzini
M. Srinivasan, A. De Charon

A.L. Del Rosario, C.L. Amedo-Repollo, C. Villanoy

Poster Session and Cocktail

Thursday 14 June 2018

DAY 2

Session 2A: Application of Coastal Altimetry Data (cont’d)

CHAIRS: Luciana Fenoglio, Stefano VignudelliMulti-Scale Analysis and Applications of Coastal Altimetry Observations Over the
Ligurian sea
Satellite Altimetry and Tide Gauge Data in Local Vertical Datum Unification

M. Meloni, A. Doglioli, A. Petrenko, J. Bouffard, G. Valladeau

Coastal Altimetry for Ocean Applications in the Strait of Gibraltar

J. Gómez-Enri, S. Vignudelli, A. Izquierdo, M. Passaro, C.J. Gonzalez,
P. Cipollini, M. Bruno, O. Alvarez, R. Mañanes

10:00

Combining Coastal Altimetry Data with In-Situ and Land-Based Remote Data for
Improving the Monitoring of the Dynamics in the Southeastern Bay of Biscay

A. Caballero, A. Rubio, M.-H. Rio, N. Ayoub, J. Mader, G. Larnicol,
I. Manso-Narvarte, C. Dufau

10:20

Coastal Altimetry activities on the Coastal Thematic Exploitation Platform

S. Clerc, S. Vignudelli, C. Bevy, E. Tuhoy

9:00
9:20
9:40

10:40-11:10

11:10
11:30

R. Reyes, R. Forsberg

Coffee BreakSession 2B: Application of Coastal Altimetry Data - Sea Level, Currents CHAIRS: Martín Saraceno, Remko Scharroo& Data Assimilation
Regional Sea-Level Trends and Variability from Altimetry and Tide Gauges at theZ. Gharineiat, X. Deng
Northern Australian Coast
Progress in the Validation of Coastal Sea Level Rates Using Coastal Altimetry Products A. Shaw, F. Mir Calafat, N. Dayoub

Thursday 14 June 2018
11:50
12:10
12:30
12:50-14:00

14:00
14:20
14:40

DAY 2

Feasibility Evaluation of Extracting Submesoscale Surface Currents from
High-Resolution Sea Surface Heights in a Coastal Region
The Performance of Satellite Altimetry Currents in a Wide Continental Shelf

E. A. Lee and S. Y. Kim

ALES on Co-ReSyF: a Platform for Easy and Efficient Access to
Coastal Altimetry Data

N. Dayoub, P. Cipollini, H. Snaith, V. Byfield

L.S. Lago, M. Saraceno, P. Martos, R. Guerrero, A. Piola, C. Provost

Lunch
Session 2B: Application of Coastal Altimetry Data - Sea Level, Currents CHAIRS: Nadim Dayoub, Guoqi Han& Data Assimilation (cont’d)
Impact of the Assimilation of High-Resolution and High-Frequency Data in a
Regional Model
Data Assimilation of Along-Track Sea Level Anomaly on Regional Ocean Modeling
SystemAssimilation of High-Resolution Altimetry in a Canadian East Coast Forecasting
System

15:00-15:40 Discussion on the Applications of Coastal Altimetry (Sessions 2A & 2B)

M. Benkiran, E. Rémy, J-M. Iellouche, C. Dufau
Z. Wang, G. Lyu, H. Wang, G. Liu
M. Benkiran, C. Dufau, G. Smith, Y. Liu, F. Davidson

ALLThursday 14 June 2018
Coffee Break

15:40-16:10
16:10
16:30
16:50
17:10
17:30-18:00

DAY 2

Session 3: Synergistic and Climate Studies

CHAIRS: David Cotton, Doug Vandemark

Coastal Currents Along the Yucatan Peninsula

J.A. Kurczyn Robledo, C.M. Appendini, X. Flores, G. Posada

Assessment and Calibration of Century Based Wind and Wave Climate Data Record S. Abdalla, B. Ozbahceci, A.R. Turgut, A. Bozoklu
in Coastal Zone Using Radar Altimeter Data
Climate Variability and Trends of Coastal Currents off Atlantic Canada from Satellite G. Han, N. Chen
Altimetry
Southwestern Atlantic Currents from InSitu and Satellite Altimetry
M. Saraceno, G. Paniagua, L. Lago, C. Artana, R. Ferrari, A. Piola,
C. Provost, R. Guerrero

S3 Poster Flashes (2 mn - 2 slides)
Philippine Sea Level Responses to Intraseasonal, Seasonal and Interannual
Variabilities in the Tropical Western Pacific Region
Long Term Sea Level Changes from Satellite Altimetry Used in GeographicalMulticriteria Analysis to Support Coastal Planning
An Assessment of the Quality of the ESA Sea Level CCI Products in the Coastal
Zone of the Northern Adriatic Sea Using Tide Gauge Measurements and Coastal
Altimetry Products

A. Gallentes, A. Punongbayan, C. Repollo
S. Gorelli, J. Gómez-Enri, M. Rotonda, S. Vignudelli
S. Vignudelli, F. De Biasio, A. Scozzari, S. Zecchetto

Thursday 14 June 2018

DAY 2

Investigating a Slope Water Intrusion Event Into the Gulf of Maine – Parallel
Assessment Using a Data Assimilative Regional Ocean Model and New Satellite
Salinity Observations
An Evaluation of Present-Day Sea Level Change in the Black Sea by Considering of
Steric and Mass Components
The Importance of Altimetry Data on Deciphering Brazil Current Core Velocities andCorresponding Volume Transport
Investigation of Relationship Between Lake Coastline Change and Climatic Factors
Using Satellite Images: a Case Study Burdur Lake (Turkey)
Coastline Change Assessment on the Shallow Lakes in Kızılırmak Delta (Turkey)
Using Worldview-2 and Landsat Satellite Images Time Series

D. Vandemark, S. Grodsky, J. Levin, J. Wilkin, H. Feng

N.B. Avsar, S.H. Kutoglu
I. Pita, M. Cirano, M. Mata, M. LimaŞ. Şener, E. Şener, A. Davraz
E. Şener, Ş. Şener, M. Güler

18:00-18:30

Poster Session and Cocktail

19:30-22:30

Social Dinner [No-Host]Friday 15 June 2018
9:00

9:20
9:40
10:00
10:20

DAY 3

Coastal Altimetry for Sea_Level_cci & Sea_Level_Budget_Closure_cci

SL_cci and SLBC_cci Projects

Session 3: Synergistic and Climate Studies (cont’d)

CHAIRS: David Cotton, Paolo Cipollini

Trends and Variability in Coastal Sea State and Sea Level from the CCI+ Sea State
Project

C. Gommenginger, N. Dayoub, F. Wimmer, A. Shaw, C. Banks, F.
Calafat, H. Snaith, M. Srokosz, E. Ash

Application of Satellite Altimetry as a Tool for Managing Coastal Risk in Mozambique,
Madagascar and South Africa
Normalized Radar Cross Section and Slope Variance Measured Over Inland Water
BodiesEstimating Sea Level Variations Due to Greenland Ice Sheet Melting

D. Cotton, A. Becker, V. Byfield, F. Calafat, N. Dayoub
M. Panfilova, V. Karaev
S. Stolzenberger, R. Rietbroek, J. Kusche

10:40-11:10 Discussion on Synergistic and Climate Studies (Session 3) and Coastal

Altimetry for Climate
11:10-11:40

Coffee Break and Final Look at Posters

11:40-12:10 Report from Session Chairs (10’ each)
12:10-13:30 Final Discussion, Recommendations and Closing RemarksALLnotes:Detailed technical and scientific information
can be found at: www.coastalaltimetry.org