data exploitation and modeling for the upper troposphere and lower stratosphere cost723

COST MC Meeting Sofia, May 19 2006

William Lahoz

Data Exploitation and Modeling for the Upper Troposphere and Lower Stratosphere

www.cost723.org


William Lahoz

Scope and StructureAltitude region around the tropopause is crucial for earths energy balance (water vapor cooling below, ozone heating above).

Chemical, microphysical, and dynamical processes not well understood .

Model and data studies for the UTLS altitude region.

Assimilation as the central tool to consolidate models and observations.

3 Workgroups for the 3 areas.

Common workshops for all workgroups.

WG2

WG1 WG3


William Lahoz

Countries

Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Finland, France, Germany, Greece, Italy, the Netherlands, Norway, Poland, Spain, Sweden, Switzerland, UK


William Lahoz

Chairmen and Working Groups

Chair: William Lahoz (University of Reading)Vice-chair: Bernard Legras (LMD)

WG1: Data and measurement techniques(S. Buehler)

WG2: An assimilated ozone and humidity dataset(W. Lahoz)

WG3: Assessing the state of the UTLS and understanding the relevant processes(B. Legras)


William Lahoz

Sofia Workshop

What do I expect?

Strengthening of links between Bulgaria and other European scientists

Overview of WGs 1-3Examples of COST 723 work

Exploration of collaborations: between COST 723 partners; between COST 722 & 723

COST 722: “Short-range forecasting methods of fog, visibility & low clouds”

Preparation for a new COST action: e.g. integration of in situ networks and satellite data (Nik Kaempfer)


William Lahoz

Data Exploitation and Modeling for the Upper Troposphere and Lower Stratosphere

www.cost723.org

WG1 Activities


William Lahoz

Overview

Focus on humidity measurements

Improvements of different techniques and intercomparisons– In Situ– Ground Based– Satellite

Summary and Conclusions


William Lahoz

In Situ

MOL Lindenberg (RS80, RS92)

FMI Sodankylä (LAUTLOS campaign)


William Lahoz

Ground Based

Uni Bern (Microwave)

CNR-IMAA Potenza (LIDAR)

CNR-ISAC Rome (LIDAR)


William Lahoz

Satellite

Chalmers Göteborg (Odin SMR)

HIPC Prague (Odin SMR isotopes)

Uni Bremen (AMSU-B)


William Lahoz

Summary and Conclusions

A lot of ongoing activities (19 publications so far on www.cost723.org/publications)

Intercomparisons give valuable insights– Inside a technique by different instruments– Across different techniques

A pity to stop the good collaboration now

Suggestion for a follow-up action


William Lahoz

WG2: An assimilated ozone and humidity dataset

Our role/goal:

•DA used to incorporate novel observations (e.g. ozone & stratospheric water vapour in UTLS), & evaluate research satellite data (e.g. Envisat).

•Incorporate chemical data (e.g. ozone, water vapour from Envisat) into DA systems.


William Lahoz

Activities:

How to incorporate chemistry?•GCM assimilation (DARC, Met Office, ECMWF; 3d-var, 4d-var) – linear chemistry

•CTM assimilation (KNMI, BIRA-IASB, U. KÖLN, UPMC; var methods, variants of KF)

•Coupled GCM/CTM assimilation (MF; 4d-var)

Links with ASSET EU project (http://www.darc.nerc.ac.uk/asset)


William Lahoz

Activities:Envisat cal-val

•GCM (MIPAS: DARC/Met Office, ECMWF)

•CTM (SCIA/MIPAS/GOMOS: KNMI, BIRA-IASB, UPMC)

http://envisat.esa.int/workshops/acve2/presentations

Ozone intercomparison projectASSET partners

Paper submitted to ACPD: Geer et al. (2006), accepted

http://darc.nerc.ac.uk/asset


William Lahoz


William Lahoz

What comes from these studies: key ideas in chemical DA

•Ozone DA key driver in NWP & chemical models; not as much benefit as originally hoped in NWP

Key reason: relatively poor information content of ozone data available from current operational satellites -> Need more data (IASI, GOME-2,…)

•Important area for NWP & chemical model DA: estimation of B

Needs to take account of physical & chemical principles & statistical dataOne of biggest challenges in DA

•Bias an important issue in DA -> estimation of biases a major challenge

Observations & models confronted to identify & attribute biasesImplementation of bias correction schemes active field of research


William Lahoz

•Model deficiencies in transport & chemistry limit value of DA

V. difficult for assimilated data to represent processes on timescales much longer than typical assimilation cycle – O(weeks to months)

•Expanding area for future DA activities is likely to be air quality

Experience gained in stratospheric chemical DA -> starting point for tackling technical problems associated of tropospheric chemical DA

•Currently a wealth of constituent data from research satellites

Danger that this will diminish just as DA techniques to exploit those data reaching maturity -> What happens after Envisat & Eos Aura?


William Lahoz

•DA invaluable for use of stratospheric constituent measurements:

•Fills gaps between observations•Allows use of heterogeneous measurements

•Numerical model -> information to be propagated forward in time: combination of measurements available at different times & locations

•Properly applied, DA can add value to observations & models, compared to information that each can supply on their own

•DA underpins evaluation of impact of current observation types using OSEs, and future global observing system using OSSEs

DA ADDS VALUE

BUT, for proper use, limitations must be borne in mind

Finally…


William Lahoz

Achievements:•Assimilation of Envisat data & cal-val

•Intercomparison of ozone analyses

•Address complexity of chemistry for DA

•Ozone forecasts (stratosphere/troposphere)

•Publications

•Summer schools (lectures & organization)

•Invited presentations at international meetings


William Lahoz

Summary

COST 723 WG2 is on a good track.

A lot of work via ASSET (Envisat)

Links with SPARC community (workshop in Oct 2006)

Plans for Eos Aura

New COST action?: integration between in situ network and satellite data


William Lahoz

WG3 ACTIVITY

ClimatologyB. Kois (Poland): Changes in the UT/LS over Central EuropeB. Legras & F. d'Ovidio (France): Climatology of mixing in the UT/LS

Transport in the UT/LSI. Pisso & B. Legras (France): Pollution plume in the UTB. Legras (France): Age of air

Stratosphere-troposphere exchangeE. Gerasopoulos, P. Zanis et al. (Greece) : Deep penetration of stratospheric air over Eastern

MediterraneaR. James & B. Legras (France): Mixing at the tropopause and upper-level frontogenesis

Parametrization of micro-physical processesK. Gierens (Germany): A new ice scheme in the ECMWF model


William Lahoz

3-15 October 2005Cargese, Corsica

Topics:- UTLS measurement techniques- data assimilation- modelling studies of the UTLS

Audience - researchers + students (school/workshop)

Format- 18 ½ lecturers, ~75 participants-- lectures -> http://www.cost723.org/school-- extra presentations (eg writing skills)-- discussion panels- posters

Support from: COST/ESF; CNRS/CNES; UCAR/NSF

COST 723 UTLS Summer school


William Lahoz

Lecturers:

17 ½ lecturers

Observations: S. Buehler, J.-P. Cammas, B. Carli, H. Kelder, P. Levelt, L. Moyer, G. Vaughan

Data assimilation: F. Bouttier, D. Fonteyn(*), W.A. Lahoz, R. Swinbank, O. Talagrand

Modelling: M. Baldwin, A. Gettelman, K. Gierens, B. Legras, A. O’Neill, H. Wernli

(*) Unable to attend – lectures given by W.A. Lahoz


William Lahoz

Students:

128 applicants from 44 countries, all continents (except Antarctica!)

Final list: 73 students; 31 male & 42 female

Statistics follow in the MC presentation...


William Lahoz


William Lahoz

PublicationsACP Special Issue

Data exploitation and modeling for the upper troposphere and lower stratosphere (COST 723)Editor(s): W. Lahoz, S. A. Buehler, and D. McKenna

A practical demonstration on AMSU retrieval precision for upper tropospheric humidity by a non-linear multi-channel regression methodC. Jiménez, P. Eriksson, V. O. John, S. A. BuehlerPage(s) 451-459. SRef-ID: 1680-7324/acp/2005-5-451Abstract Print Version (444 KB) Discussion Paper Special Issue SRef Overview

11.02.2005

Water vapour and ozone profiles in the midlatitude upper troposphereG. Vaughan, C. Cambridge, L. Dean, A. W. PhillipsPage(s) 963-971. SRef-ID: 1680-7324/acp/2005-5-963Abstract Print Version (2605 KB) Discussion Paper Special Issue SRef Overview

21.03.2005

A case study on the formation and evolution of ice supersaturation in the vicinity of a warm conveyor belt's outflow regionP. Spichtinger, K. Gierens, H. WernliPage(s) 973-987. SRef-ID: 1680-7324/acp/2005-5-973Abstract Print Version (3751 KB) Discussion Paper Special Issue SRef Overview

22.03.2005

Formation of ice supersaturation by mesoscale gravity wavesP. Spichtinger, K. Gierens, A. DörnbrackPage(s) 1243-1255. SRef-ID: 1680-7324/acp/2005-5-1243Abstract Print Version (1986 KB) Discussion Paper Special Issue SRef Overview


William Lahoz


30.05.2005Analysis of water vapor LIDAR measurements during the MAP campaign: evidence of sub-structures of stratospheric intrusionsP. D'Aulerio, F. Fierli, F. Congeduti, G. RedaelliPage(s) 1301-1310. SRef-ID: 1680-7324/acp/2005-5-1301Abstract Print Version (2391 KB) Discussion Paper Special Issue SRef Overview

01.06.2005GPS radio occultation with CHAMP and SAC-C: global monitoring of thermal tropopause parametersT. Schmidt, S. Heise, J. Wickert, G. Beyerle, C. ReigberPage(s) 1473-1488. SRef-ID: 1680-7324/acp/2005-5-1473Abstract Print Version (2837 KB) Discussion Paper Special Issue SRef Overview

15.06.2005Variability of the Lagrangian turbulent diffusion in the lower stratosphereB. Legras, I. Pisso, G. Berthet, F. LefèvrePage(s) 1605-1622. SRef-ID: 1680-7324/acp/2005-5-1605Abstract Print Version (2424 KB) Discussion Paper Special Issue SRef Overview

30.05.2005Analysis of water vapor LIDAR measurements during the MAP campaign: evidence of sub-structures of stratospheric intrusionsP. D'Aulerio, F. Fierli, F. Congeduti, G. RedaelliPage(s) 1301-1310. SRef-ID: 1680-7324/acp/2005-5-1301Abstract Print Version (2391 KB) Discussion Paper Special Issue SRef Overview


William Lahoz


22.06.2005

Retrieval of temperature and water vapor profiles from radio occultation refractivity and bending angle measurements using an Optimal Estimation approach: a simulation study

A. von Engeln, G. NedoluhaPage(s) 1665-1677. SRef-ID: 1680-7324/acp/2005-5-1665Abstract Print Version (307 KB) Discussion Paper Special Issue SRef Overview

07.07.2005

Comparison of microwave satellite humidity data and radiosonde profiles: A survey of European stationsV. O. John, S. A. BuehlerPage(s) 1843-1853. SRef-ID: 1680-7324/acp/2005-5-1843Abstract Print Version (317 KB) Discussion Paper Special Issue SRef Overview

25.07.2005

Retrieval of upper tropospheric water vapor and upper tropospheric humidity from AMSU radiancesA. Houshangpour, V. O. John, S. A. BuehlerPage(s) 2019-2028. SRef-ID: 1680-7324/acp/2005-5-2019Abstract Print Version (9313 KB) Discussion Paper Special Issue SRef Overview

05.08.2005

Indications of thin cirrus clouds in the stratosphere at mid-latitudesP. Keckhut, A. Hauchecorne, S. Bekki, A. Colette, C. David, J. JumeletPage(s) 3407-3414. SRef-ID: 1680-7324/acp/2005-5-3407

Abstract Print Version (420 KB) Discussion Paper Special Issue SRef Overview


William Lahoz

PublicationsQJRMS Special Issue

• To come out 2007• 10,000 Euros to spend• Pavol Nejedlik to discuss with RMS• Page charges of 100 Euros (£75) per page• Colour figures 750 Euros (£500)• Papers from Sofia Workshop + COST 723 related• Suggest: first ten accepted papers will be supported with 1000

Euros each• Editors: W.A. Lahoz + someone else• Encourage submission by December 2006?


William Lahoz

STSMs

Please use (http://www.cost723.org/docs)

Review committee: SB, WL & BL

9 STSMs

Marion Muller, Barbara Brzoska, Kostas Elefterathos, Dieter Feist, Alan Geer, Adam Jaczewski, Tuomo Suortti, William Lahoz and Andreas Dornbrack

Poster at EGU (Feist) & several papers in the pipeline


William Lahoz

Final report

Suggested contents (not longer than 200 pages)

1) Introduction (William Lahoz, WL and Stefan Buehler, SB)2) The Working groups 2.1) WG1 (SB) 2.2) WG2 (WL) 2.3) WG3

(Bernard Legras, BL)3) Activities 3.1) STSMs (WL and SB) 3.2) Workshops 3.2.1) ESTEC

2004 (SB and BL) 3.2.2) Sofia 2006 (WL and SB) 3.3) Summer School (WL, BL and SB) 3.4) Journal special issues 3.4.1) ACP/ACPD (WL, SB) 3.4.2) QJRMS (WL, SB, BL) *TBC*

4) Achievements (WL, SB and BL) 5) Recommendations (WL, SB, BL) A) Annexes (WL, SB and BL) A.1) Publications A.2) MC members

A.3) List of STSMs


William Lahoz

New COST proposal• Integration of in situ networks and satellite data (Nik Kaempfer – suggest lead, with

contribution from other COST 723 members)

• Preliminary proposal max 1500 words (3 pages) using web template (http://www.cost.esf.org.opencall) by 31 May

• Proponents are invited to indicate their preference for one Domain (Earth System Science & Environmental Management). Proposals not fitting this broad disciplinary structure are also welcome and will be assessed separately.

• Proposals should include researchers from a minimum of five COST member states and should network nationally funded research activities. No request for research funds.

• Their work plan should include no more than four targeted Working Groups and include activities such as meetings, short term scientific missions, work shops, conferences and outreach activities.

• On average financial support of some € 90.000 p.a. as grant for up to 4 years can be expected.

• Full proposals invited for submission by 30 June, submission by 15 September


William Lahoz

New COST proposalTemplate:

Proposer details

Scientific content: Title, abstract, key words

Preferred COST domain

Text of proposal (max 10000 characters, ~1500 words): Background, problems; benefits; Objectives, deliverables & expected scientific impact; scientific programme and innovation; organization

Participants interested in work

PAY ATTENTION TO ASSESSMENT CRITERIA


William Lahoz

New COST proposal

Assessment criteria:

• Impact of proposal

• Quality of proposal

• Management of proposal

• Presentation

• Overall recommendation

data exploitation and modeling for the upper troposphere and lower stratosphere cost723

Documents