N E W S

Workshop on observation errors

07.04.2012

Within the framework of the EU project ERA-CLIM a workshop on observation errors will take place on 19.-20. April in the department's Exner Hörsaal.

Estimates and a priori estimates of observation errors are an important issues when doing reanalyses, since they can change considerably during the assimilation periods of several decades.

The workshop is intended for participants of ERA-CLIM but a few interested people may get a place for listening silently to one or the other talk.

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

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