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MIPAS-TELIS Measurement Plan for TER2008

This document outlines the MIPAS-TELIS measurement plan for the TER2008 mission, detailing logistical constraints and scientific objectives. It includes a case study using MIPAS-B flight 15, describing the observation plan and measurement trajectory, predicted flight duration, ENVISAT overpasses, and anticipated cloud and convective activity. Key scientific focuses emphasize the closure of chemical families in the tropical transition layer (TTL), the synergies between TELIS and MIPAS-B, and the contribution to understanding atmospheric radicals, providing insights into tropical chemistry and satellite validation efforts.

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MIPAS-TELIS Measurement Plan for TER2008

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  1. MIPAS-TELIS Measurement Plan for TER2008 • Logistical Constraints • Science • MIPAS-B flight 15 as an xample • Obs plan

  2. Flight and Measurement Plan Ingredients • Predicted trajectory (direction, time of the day) • Predicted flight duration • Envisat overpasses • Predicted clouds and convective activity • Predicted float level(s) • Science objectives

  3. Review of TELIS+MIPAS-B scientific objectives • Closure of chemical families (NOy, Cly, HOx, Bry) still missing (at least above the ER2 cruising altitude), nota bene: complementarity and consistency checks • Scientific issues associated to the tropical transition layer (TTL) are getting more and more important

  4. Scientific Objectives of TELIS+MIPAS What we miss… … on a chemical family by family basis nitrogen chlorine bromine hydrogen

  5. What TELIS could contribute (Synergies) • Closure of chemical families and understanding of family coupling • NOy: NO3 • ClOy:HCl, ClO, HOCl, Cl2O2 • BrOy:BrO, BrONO2, HBr (?), BrCl, HOBr, … • HOx: HO, HO2 • UTLS: CO, PAN (?), acetone (?), HCHO (?), short-lived source gases • Diurnal variation of radicals: NO, NO2, HO, HO2, BrO, ClO, … • Non-LTE issues and intrusion of mesospheric air: NO, CO, .. • Consistency checks: HNO3, H2O, ClO, others (?) • Spectroscopy issues: spectroscopic parameters of species measured by both instruments in different bands

  6. What TELIS could contribute (Synergies (cont.)) • UTLS region (what can TELIS provide in terms of altitude coverage and accuracy??) • Qualification of TELIS and satellite validation (direct & indirect) • Utilisation of synergy of ENVISAT (and other satellite) observations and coordinated field measurements • TTL: Water isotopes as complement or for cross-check (CH3D ?) What else will/would be a nice complement: UV-Vis Mini-DOAS (K. Pfeilsticker, Uni. HD) An instrument to measure the actinic flux in the UV and visible spectral region (simpe instrument by Frank Hase flew as piggy back).

  7. Measurement planning – MIPAS-B_F15 as an example Objectives • TTL science • Diurnal variation • NOy in Tropics • Convective outflow • Radiative fluxes from below • Envisat validation • …

  8. Limb sequences look up tables

  9. Flight measurement plan - ascent

  10. Flight measurement plan - ceiling

  11. MIPAS-B2 F15 (13-14 Juni 2005): Erster Tropenflug

  12. ‚Typischer‘ Flugablauf (Flug15) Azimuth (°) Cloud- detect Cloud- detect Nadir Nadir Elevation (°) TIME

  13. Cloud survey from azimuth scanning

  14. 5:35 UT 7:50 UT 7:15 UT 6:37 UT Alt. (km) 4:53 UT MIPAS-B: Flight #15, 14 June 2005, Teresina (BR)

  15. NO2 (ppbv) Clouds and lightning

  16. MIPAS-TELIS OBS Plan • Channel selection/optimization (prioritized molecules) • Harmonizing sampling strategies (channels/pointing/vertical sampling) • Calibration strategies • Envisat validation • Specific TELIS objectives? • Nadir measurements ?

  17. Chlorine family

  18. TELIS Weitere Komplettierung der Gondel mit UV-vis Spektrometer (mini-DOAS) (DFG Antrag) MIPAS-B TELISMIPAS+TELIS NOy-family: NO, NO2, HNO3, HNO4, N2O5, ClONO2, HCN, PAN Cly-family: ClO, HOCl, HCl, ClONO2 HOx: OH, HO2, H2O2 Bromine: BrO Short-lived source gases and precursors: OCS, NH3, acetone, PAN, NMHCs (C2H6, C2H2, ..)

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