·      Ad Stoffelen's Home Page

               Leader Satellite Winds Group  Weather Research
KNMI

 

Waarom Satelliet Windmetingen?
Mooi plaatje, en nog meer ....

Winds from satellites
Instruments
Projects
Colleagues involved
International collaboration and representation
Publications
Web Links

 
 

Waarom Satelliet Windmetingen?

Significant weer komt van de oceaan

De weeranalyses op de oceaan zijn soms slecht want daar zijn weinig waarnemingen

Extreme stormen of storingen worden dan slecht voorspeld (kerststormen '99, weeralarmen)

Windmetingen zijn het meest effectief om de weeranalyses te verbeteren
 

Lidar Vertikale Windprofielen

ESA Atmospheric Dynamics Mission (geplande lancering in 2015 )


(c) ESA

Eerder ADM werk op het KNMI                                      Earlier ADM work at KNMI

 
Scatterometer Windmetingen

ERS AMI scatterometer (rode pijlen) in de buurt van Jan Mayen;
dat ligt tussen IJsland en Groenland.

Of hier de actuele plaatjes in de tabel met uitvergrotingen.

  • Grote ruimtelijke bedekking
  • Ruimtelijk gedetailleerde informatie


 

NASA/NOAA QuikScat scatterometer presentatie (twee maal daags in te nemen!)

     of hier de actuele plaatjes
 
 
 

SeaWinds werk op het KNMI

 

· Winds from Satellites

One of the key limiting factors in forecasting the weather in Europe is the sparse availability of meteorological observations over the oceans, since European weather often originates from over these areas. As a consequence, the three-dimensional flow is poorly analysed and extreme events, such as storms, are poorly forecasts. Moreover, atmospheric flow analysis is pretty bad in the tropics. In particular wind observations are effective in improving the analyses of the atmospheric flow. Satellite wind observations, by their uniform coverage, provide a solution. At the same time they provide a challenge, since complex active instrumentation is needed to obtain such measurements. My challenge, therefore, is to make such data useful for meteorological practise, both in weather forecasting and climate analyses.

Winds at the ocean surface are obtained by scatterometers. You can find out a lot about  scatterometers from my thesis. KNMI participates in the Eumetsat Ocean and sea Ice Satellite Application Facility (SAF) and the Numerical Weather Prediction SAF to improve the interpretation, use, and monitoring of scatterometer data. Here you find some real-time sea-surface winds from SeaWinds.

We really need three-dimensional wind information however. The ESA Earth Explorer Core atmospheric dynamics mission Aeolus has recently been approved for flight providing the first Doppler Wind Lidar data from space in 2015, as planned. I am happy to have contributed to this decision. Now make sure we make the best of it!

Water vapour is the next thing to observe better in the atmosphere to analyse atmospheric state. The ESA Earth Explorer Core WALES Mission  was proposed by me in colloboration with DLR to fil this gap.

Ozone data assimilation in atmospheric circulation models provides an interesting link between atmospheric chemistry and dynamics. Look at the EU SODA project.     

Instruments

·       ESA Atmospheric Dynamics Mission (Aeolus)

·       Pencil-beam scatterometers (QuikSCAT, ISRO OceanSat-2 Scatterometer, ..)

·       ESA AMI ERS Scatterometer

·       ASCAT on METOP

·       Synthetic Aperture Radar

·       water vapour DIAL

·       Ozone instruments

·       Rotating fan beam scatterometer

Projects


Collegues at KNMI

Maria Belmonte             Scatterometer performance simulation and Sea Ice
Tilly Driesenaar             L3 scatterometer products
Siebren de Haan             OSI SAF ice screening, CMOD5, and ambiguity removal
Gert-Jan Marseille         ADM-Aeolus and LITE
Marivi Tello                  Visiting Scientist
Jos de Kloe                   Aeolus Innovative Scatterometer concept studies
Anton Verhoef               SAF R&D
Jeroen Verspeek            OSI SAF scientist
Jur Vogelzang                NWP SAF scientist
Gerd-Jan van Zadelhoff  OSI SAF scientist

International collaboration and representations


 
 

Publications

Scientific Manuscripts

Selection:

(All publication entries are in Adobe Acrobat PDF:PDF reader)

Web Links


 
    Last update: October, 2011

Ad.Stoffelen@knmi.nl