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Premier TO OBSERVE ATMOSPHERIC COMPOSITION FOR A BETTER UNDERSTANDING OF CHEMISTRY-CLIMATE INTERACTIONS.

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Presentation on theme: "Premier TO OBSERVE ATMOSPHERIC COMPOSITION FOR A BETTER UNDERSTANDING OF CHEMISTRY-CLIMATE INTERACTIONS."— Presentation transcript:

1 premier TO OBSERVE ATMOSPHERIC COMPOSITION FOR A BETTER UNDERSTANDING OF CHEMISTRY-CLIMATE INTERACTIONS

2 PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012 2 PREMIER: ESA EE-7 Candidate Mission to Sound Atmospheric Composition Presentation by B. Kerridge (RAL, UK) on behalf of: Mission Advisory Group M. Hegglin (University of Reading, UK) J. McConnell (York University, Canada) D. Murtagh (Chalmers University, Sweden) J. Orphal (KIT, Germany) V-H. Peuch (ECMWF, UK) M. Riese (FZJ, Germany) M. van Weele (KNMI, Netherlands) J. Langen (ESA Mission Scientist) B.Carnicero-Dominguez (ESA Technical Co-ordinator) and the Science Study Teams

3 3 Mission objectives To explore processes controlling global atmospheric composition in the mid/upper troposphere and lower stratosphere; region of particular sensitivity for surface climate. –by resolving 3-D structures of trace gases, thin cirrus and temperature in this region on finer scales than previously accessible from space To explore links with surface emissions and pollution –by exploiting synergies with nadir-sounders on MetOp/SG Scientific Objectives: A.Impact of UTLS variability and the general circulation on surface climate B.Trace gas exchange between the troposphere and stratosphere C.Impact of convection, pyroconvection and their outflow on UTLS composition D.Processes linking composition of the UTLS and lower troposphere In addition, to advance operational applications for satellite composition data and contribute to global, height-resolved monitoring. → Observational requirements are demanding PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012

4 Earth Explorer-7 Phase A – 2009-12 4 1.Technical studies by industrial teams to:  define and evaluate system concepts 2.Scientific studies to: – consolidate objectives and observational requirements – quantify scientific innovation 3.Campaigns of airborne precursors to: – demonstrate new observing capabilities PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012

5 5 Limb-emission sounding High res. vertical profiling Tenuous trace gases detectable Cold space background Dense coverage cf solar occultation Nadir-sounding Near-surface layer seen between clouds but Little or no vertical resolution Observation techniques MetOp/SG PREMIER PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012

6 6 Complementarity of IR and mm-wave limb sounders Target trace gases: IR: CH 4 ; organic compounds; nitrogen oxides mm-wave: CO; biomass burning indicators; halogens Sensitivity to cirrus particle size IR: R e < 100  m mm-wave: R e >100  m →Different penetration depths into troposphere for H 2 O, O 3, HNO 3 & HCN Probability [%] of transmittance > 0.1 50 o S 0 50 o N IR – controlled by cloud mm – controlled by water vapour PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012

7 7 Advances over current limb-emission sounders Stringent requirements in the mid/upper troposphere and lower stratosphere demand 1.Finer vertical sampling 2.Finer along-track sampling 3.3 rd dimension to be added by viewing across-track The 6 – 25km range will be sampled more densely –~5 x 10 6 limb-views / day cf ~2 x 10 4 for MIPAS –Many more cloud-free views →Atmospheric fields will be observed in fine detail PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012

8 8 Sensitivity to mixing of annual mean O 3 & H 2 O distributions and their radiative effects Differences between CLaMS annual zonal means for Lyapunov mixing coeff. = 1.2 or 1.5 → Differences in global mean radiative effect  RE: O 3 : 0.17 Wm -2 H 2 O: 0.72 Wm -2  RF since 1980 due to LLGHGs + aerosols + strat. H 2 O ~0.9Wm -2 (Solomon et al,2010) PREMIER will resolve fine-scale structure in O 3 and H 2 O in the height-range of climate sensitivity and critically test model mixing schemes. Courtesy A.Rap PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012

9 Combination with MetOp/SG Links to lower tropospheric pollution and surface emissions: –Global distributions of O 3, H 2 O, CO, CH 4, HNO 3, NO 2 and other trace gases retrieved in the mid-troposphere and above from PREMIER –Extended into the lower troposphere through combination with MetOp/SG co-located data. Support to operational monitoring and forecasting: –Trace gas vertical profiles from PREMIER will improve substantially on the height-resolution of MetOp/SG nadir-sounders in the mid/upper troposphere and lower stratosphere and also on their detection and characterisation of thin cirrus and aerosol layers 9 PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012

10 Assimilation of Aura MLS O 3 data in GEMS Re-analysis 10 MLS assimilated Courtesy of A.Innes PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012

11 Simulated IR Limb Image – BT diff. 10.4 – 12.0  m Eyjafjallajokull (Iceland) plume 7 th May 2010 11 IR signature for cirrus substituted for ash Calipso x-section - OD scaled from 0.2 to 0.02 - ash IR spectral properties Courtesy of R.Siddans ESA Atmosphere Conference - PREMIER - B.Kerridge Bruges, 20 th June 2012 PREMIER will detect thin ash layers and precisely determine their altitude.

12 Impact on Column-Average Methane Mixing Ratios for Inverse Modelling of Surface Fluxes 12 SCIA column av. vmr SCIA-derived vmr > 500hPa Anthrop. Surface Emissions Natural Surface Emissions

13 13 Summary PREMIER will bring into sharp focus processes controlling atmospheric composition in the height-range most important to climate For the first time, 3-D distributions will be observed from space with the resolution needed to quantify: – Impacts on surface climate of detailed distributions & dynamical coupling – Trace gas exchange between troposphere and stratosphere – Impacts of convection, pyroconvection and their outflow on UTLS – Processes linking higher layers with the lower troposphere In addition, PREMIER will contribute to global height-resolved monitoring and advance operational applications in the GMES Atmosphere Service. –V-H. Peuch paper, Eumetsat conference Report for Mission Selection http://www.esa.int/esaEO/SEMUMJ8X73H_index_0.html http://www.esa.int/esaEO/SEMUMJ8X73H_index_0.html Analyses of airborne campaign & satellite data and simulation studies ongoing for Delta Report and User Consultation (2013) PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012

14 14

15 15 PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012 Supplementary Slides

16 16 Sampling 3-D temperature structure generated by gravity waves Typhoon PREMIER IRLS dynamics MIPAS Typhoon Winnie, 20/08/97 → Wavelength & wavevector → Back-tracing to sources Imperial College Seminar - PREMIER - B.Kerridge 8 th May 2012 GWMF at 35km for 1 day (29/01/08) from: ECMWF high-res wind PREMIER simulation  2D T retrieval  Isolate mesoscale  3D GW analysis GWMF estimate for individual events  accuracy improved x10 GWMF zonal and hemispheric means require direction  available for the first time Courtesy, P. Preusse

17 HCN in double plume from Kilmore East fires: comparison of GEM-AQ & simulated ir x-sections 17 Courtesy of N.Glatthor PREMIER will track ozone precursors and HCN in plumes to quantify ozone production and radiative forcing from pyroconvective sources Tropopause GEM-AQ PREMIER MIPAS pptv PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012

18 18 Courtesy of A.Lupu

19 Comparison of GEM-AQ and mm-wave retrieved CO & HCN x-sections - monsoon core 19 ir opacity limit due to cirrus Courtesy of J.Urban mm-wave PMET, Eumetsat - PREMIER - B.Kerridge 2 nd /3rd July 2012

20 20 Comparison of GEM-AQ and PREMIER-MetOp/SG combined retrieved O 3, CO & HNO 3 - monsoon periphery mm IR ESA Atmosphere Conference - PREMIER - B.Kerridge Bruges, 20 th June 2012 PREMIER will observe daily 3-D fields to investigate monsoon uplift in detail In combination with MetOp/SG, fields will be extended into lower troposphere. Courtesy A.Waterfall

21 ESA Living Planet Symposium - PREMIER - B.Kerridge Bergen, 30 th June 2010 21 Airborne campaigns in Mar’10 and Dec’11 - to demonstrate new observing capabilities

22 Limb-image of spectrally – integrated radiance - interferometer DC signal 22 Imperial College Seminar - PREMIER - B.Kerridge 8 th May 2012 Courtesy of T.Guggenmoser

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