Non-coincident inter-instrument comparisons of ozone measurements using quasi-conservative coordinates

Ozone measurements from ozonesondes, ARO- TAL, DIAL, and POAM III instruments during the SOLVE- 2/VINTERSOL period are composited in a time-varying, flow-following quasi-conservative (PV- ) coordinate space; the resulting composites from each instrument are mapped onto the other instruments' locations and times. The mapped data are then used to intercompare data from the different in- struments. Overall, the four ozone data sets are found to be in good agreement. AROTAL shows somewhat lower values below 16 km, and DIAL has a positive bias at the upper limits of its altitude range. These intercomparisons are consistent with those obtained from more conventional near-coincident profiles, where available. Although the PV- mapping tech- nique entails larger uncertainties of individual profile differ- ences compared to direct near-coincident comparisons, the ability to include much larger numbers of comparisons can make this technique advantageous.

[1]  Martyn P. Chipperfield,et al.  Three‐dimensional tracer initialization and general diagnostics using equivalent PV latitude–potential‐temperature coordinates , 1995 .

[2]  M. Rummukainen,et al.  Chemical Ozone Loss in the Arctic Winter 1994/95 as Determined by the Match Technique , 1999 .

[3]  D. Jacob,et al.  Large-scale ozone and aerosol distributions, air mass characteristics, and ozone fluxes over the western Pacific Ocean in late winter/early spring , 2003 .

[4]  L. Froidevaux,et al.  Comparison of ER‐2 aircraft and POAM III, MLS, and SAGE II satellite measurements during SOLVE using traditional correlative analysis and trajectory hunting technique , 2002 .

[5]  William B. Grant,et al.  Differential absorption lidar (DIAL) measurements from air and space , 1998 .

[6]  L. Lait.  An Alternative Form for Potential Vorticity , 1994 .

[7]  Mark R. Schoeberl,et al.  Reconstruction of the constituent distribution and trends in the Antarctic polar vortex from ER‐2 flight observations , 1989 .

[8]  Dale A. Richter,et al.  Advanced Airborne UV DIAL System for Stratospheric and Tropospheric Ozone and Aerosol Measurements , 1997 .

[9]  M. Chipperfield,et al.  Chemical ozone loss in the Arctic winter 2002/2003 determined with Match , 2005 .

[10]  F. Goutail,et al.  Ozone loss from quasi‐conservative coordinate mapping during the 1999–2000 SOLVE/THESEO 2000 campaigns , 2002 .

[11]  Fabrizio Ravegnani,et al.  Ozone measurements during the Airborne Polar Experiment : Aircraft instrument validation, isentropic trends, and hemispheric fields prior to the 1997 Arctic ozone depletion , 2000 .

[12]  Jerry Lumpe,et al.  Reconstruction of three-dimensional ozone fields using POAM III during SOLVE , 2002 .

[13]  H. Arakawa.  AN ALTERNATIVE FORM OF POTENTIAL VORTICITY , 1941 .

[14]  Gert König-Langlo,et al.  The Polar Ozone and Aerosol Measurement (POAM) III instrument and early validation results , 1999 .

[15]  M. Schoeberl,et al.  Conservative-coordinate transformations for atmospheric measurements , 1992 .

[16]  J. Ziemke,et al.  Trajectory mapping: A tool for validation of trace gas observations , 2000 .

[17]  Mark R. Schoeberl,et al.  Reconstruction of O3 and N2O fields from ER‐2, DC‐8, and balloon observations , 1990 .

[18]  Hartmut Boesch,et al.  Comparison of POAM III ozone measurements with correlative aircraft and balloon data during SOLVE , 2002 .

[19]  Validation of Temperature Measurements from the Airborne Raman Ozone Temperature and Aerosol Lidar During Solve , 2013 .

[20]  E. Browell,et al.  An Assessment of the Ozone Loss During the 1999-2000 SOLVE Campaign , 2000 .

[21]  W. Grant,et al.  An assessment of the ozone loss during the 1999–2000 SOLVE/THESEO 2000 Arctic campaign , 2002 .

[22]  J. Zawodny,et al.  Comparison of satellite ozone observations in coincident air masses in early November 1994 , 2001 .

[23]  A. J. Miller,et al.  UARS MLS O3 soundings compared with lidar measurements using the conservative coordinates reconstruc , 1994 .

[24]  Michael Seablom,et al.  Technical report series on global modeling and data assimilation. Volume 4: Documentation of the Goddard Earth Observing System (GEOS) data assimilation system, version 1 , 1995 .