C-band High and Extreme-force Speeds (CHEFS)

About C-band High and Extreme-force Speeds (CHEFS).

C-band High and Extreme-force Speeds (CHEFS)

CHEFS aims to advance the understanding of C-band scatterometer retrievals in high and extreme winds cases. In particular, this study aims to assess the additional information in C-band cross-polarisation data from Synthetic Aperture Radar (SAR) to prepare for the high wind retrievals from the future EPS-SG scatterometer missions.

Objectives
Overview
Schedule
Study Meetings
Contact

 

Objectives

The CHEFS study expects to contribute to:

  • the understanding of the C-band cross-polarisation information contribution to high and extreme wind retrievals from future C-band scatterometer missions;
  • the definition of spatial scaling issues and related consequences for product sample resolutions and validation approaches;
  • the further understanding of satellite remote sensing of high and extreme wind conditions over the ocean.

Overview

The aim of this study is to provide reliable extreme ocean surface vector wind (OSVW) information in open ocean and marine coastal regions from C-band scatterometers, where generally limited in situ measurement capability exists.

The main objectives of the project are:

  • VH Geophysical Model Function (GMF) at extremes: The understanding of the future C-band VH information contribution to high and extreme wind retrievals from C-band scatterometer missions.
  • Spatial scaling of extremes: The definition of spatial scaling issues and related consequences for product sample resolutions and validation approaches.
  • Understanding of extremes: To further understanding of satellite remote sensing of high and extreme wind conditions over the ocean. Besides exploiting data from the hurricane hunters and RadarSat, the study will look at cross-polarized Sentinel-1 backscatter and wind data at various high wind cases (see Figure 1, top right, click to expand) with the perspective to directly map the findings on the EPS ASCAT mission and on the future expectations of the EPS-SG SCA mission.

Schedule

Phase Details
Kick-Off 29/09/2017
Duration 12 months
Status Ongoing
WP1 Project management
WP2 State of the art and user requirements
WP3 High and extreme wind cases selection
WP4 Sentinel-1 extreme wind cross-polarisation data assessment
WP5 Generation of SCA test data and validation

Study Meetings

Phase Date and location
Kick-Off 26/09/2017, Teleconference
PM1 26/01/2018, Teleconference
PM2 25/04/2018, at IOVWST meeting
Mid-term Review Q2/2018
PM3 Q3/2018
Final Presentation Q4/2018

Workshop

Presentation from Stoffelen et al., C-band High and Extreme-Force Speeds (CHEFS), Stoffelen et al.; presentation at the International Ocean Vector Winds Science Team Meeting Barcelona, Spain, 24-26 April 2018.

Contact

EUMETSAT Project Manager
Dr Stefanie Linow
Remote Sensing Scientist - Scatterometry
Remote Sensing and Products Division
EUMETSAT
Email
Dr Ad Stoffelen
R&D Satellite Observations
KNMI
Email
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