N E W S

Workshop on observation errors

07.04.2012

Von 19.-20. April findet im Exner Hörsaal des Instituts ein Workshop on observation errors im Rahmen des EU-Projektes ERA-CLIM statt.

Schätzungen und a priori Schätzwerte von Beobachtungsfehlern sind für Reanalysen besonders wichtig, weil sich diese im Lauf der mehrere Jahrzehnte langen Assimilationsperiode erheblich ändern. 

Der Workshop ist an sich für Teilnehmer am ERA-CLIM Projekt gedacht. Einige Personen können sich aber als stille Zuhörer den einen oder anderen Vortrag anhören.

 Programme 19 April:

Time

 

9.00

Registration

9.15

Welcome, Introduction

 

Prof. G. Bokelmann

L. Haimberger

9.30

Diagnosis and specification of observation errors in reanalyses – part I

 

9.30: D. Dee

Some background on observation handling in data assimilation

10.15: G. Desroziers

Observation Error Specifications

10.50

Coffee break

11.10

Diagnosis and specification of observation errors in reanalyses – part II

 

11.10: P. Poli

Observation error variance estimates

11.40

Bias estimation and correction of in situ upper air observations – part I

 

11.40: L. Haimberger

    In situ upper air bias correction using background
    departure statistics

12.30

Lunch at restaurant “Selbstverständlich”

 

 

13.40

Bias estimation and correction of in situ upper air observations – part II

 

13.40: R. Wartenburger

Estimation of Observation and Representivity Errors in Historical Upper-Air Observation Datasets

14.10: L. Ramella-Pralungo

Homogeneity of pre-1958 radiosonde temperature data – first results

14.30: C. Tavolato

Variational bias correction of radiosonde wind direction errors – first results

14.45: M. Milan:

Radiosonde temperature bias estimation using a variational approach

15.00

Coffee break

15.20

Error specification and bias estimation for satellite data

 

15.20: R. Roebelink

Inter-calibration activities for Meteosat and quantification of uncertainties in EUMETSAT

15.50: N. Rayner

Observation errors in early satellite data

       16.10: D. Dee

Error estimation for satellite observations

 

19.00

Workshop Dinner at
“Gmoakeller”, Heumarkt 25, 1030 Wien

 

 

 

 

 

Programme 20 April:

Time

 

9.00

Errors in surface observations, boundary conditions

 

9.00: A. Valente

Errors in surface observations and first steps in homogenising Portuguese records

       9.30: N. Rayner

The marine (sub)surface database and the ensemble of databases

9.55

Methods for estimating uncertainty of reanalysis products, including surface flux fields

 

9.55: M. Mayer

Estimating uncertainty of reanalyses products using energy budget diagnostics

10.30

Coffee break

10.50

Documenting and archiving uncertainty information for users

 

10.50: D. Dee

Current status and plans

11.10

Pathways for reducing observation and analysis errors

 

Introductory note by Leo Haimberger with following discussion

12.20

Lunch at WU Mensa

14.00

Developing/sharpening of workpackage 4 tasks

16.00

Wrap-up and conclusions