# Presentation: 328431

## Aura Validation Workshop

- Preliminary Comparisons of MTP and Aura Temperature Profiles
- MJ Mahoney
- JPL/Caltech
- CSC, Lanham-Seabrook, MD
- September 21-23, 2005

## Introduction

-  HAVE-2 MTP data were processed first and PAVE analysis is on-going, although preliminary data has been submitted to the ESPO archive for all flights. (I have been re-processing the HAVE-2 data to include refinements made in the PAVE analysis.)
-  Status of Aura validation work using PAVE and HAVE-2 MTP data -
-  MLS - Three HAVE-2 MLS validation flights have been examined. PAVE flights are TBD.
-  TES - TES data only is available for 1 to 2 PAVE validation flights, which we have examined.
-  HIRDLS - data has not been released to the community

## In Situ Temperature Calibration against Radiosondes

- PAVE:     Tnav - Traob   = +0.86 K +/- 0.16 K (N=84)                                                                                              .                Tmtp - Traob  = +0.00 K +/- 0.16 K (N=84)

*In Situ* Temperature Calibration against Radiosondes

- MTP temperature is calibrated to agree with RAOBs. When the outside air temperature is compared to RAOBs launched near the aircraft flight track, we find the following:

## MTP Accuracy Relative to Radiosondes

- PAVE - DC8

- HAVE2 - WB57

## A HAVE-2 Case Study for MLS 

- The following RAOB launch sites (red dots) were near MLS and WB-57 ground tracks on the flight of 2005.06.22
-  RAP - Rapid City, SD
-  LBF - North Platte, NE
-  DDC - Dodge City, KS
-  OUN - Norman, OK
-  FWD - Fort Worth, TX
- MLS measurement points are green dots covering about 4 minutes (0.24 ks)
- No kernal averaging has been used in the comparisons
- Quantitative results have been calculated for all 3 HAVE-2 validation flights, but will not be shown.

- MLS 71.4 ks

## Fort Worth, TX (FWD)

- MTP retrieval (magenta) super-imposed on the temporally inter-polated RAOB (white)

- MLS retrieval (magenta) super-imposed on the layer-averaged MTP retrieval (white dots)

## Norman, OK (OUN)

- MTP retrieval (magenta) super-imposed on the temporally inter-polated RAOB (white)

- MLS retrieval (magenta) super-imposed on the layer-averaged MTP retrieval (white dots)

- ~12 minutes before MLS

## Dodge City, KS (DDC)

- MTP retrieval (magenta) super-imposed on the temporally inter-polated RAOB (white)

- MLS retrieval (magenta) super-imposed on the layer-averaged MTP retrieval (white dots)

- ~13 minutes before MLS

## North Platte, NE (LBF)

- MTP retrieval (magenta) super-imposed on the temporally inter-polated RAOB (white)

- MLS retrieval (magenta) super-imposed on the layer-averaged MTP retrieval (white dots)

## Rapid City, SD (RAP)

- MTP retrieval (magenta) super-imposed on the temporally inter-polated RAOB (white)

- MLS retrieval (magenta) super-imposed on the layer-averaged MTP retrieval (white dots)

## A PAVE Case Study for TES

- A preliminary comparison of TES nadir T-profile data (49 green dots) with RAOBs and MTP. The MTP T-profile was interpolated to the TES retrieval points. No kernal averaging has been applied to the MTP data.

- RNK

## Summary

-  MTP data have been archived for three AVE campaigns (pre-AVE, PAVE, and HAVE-2)
-  Temperature profiles have been calibrated to <1 K against RAOBs +/- 8 km from flight level
-  HAVE-2 retrievals are excellent; we will continue to refine the PAVE retrievals to improve the quality metric
-  Please consult with us if you are planning to use the MTP data
-  More information is available at the MTP web site. URL: http://mtp.jpl.nasa.gov

## PAVE Flight of January 27, 2005

- The DC-8 flew from Portsmouth, NH, to Resolute, NT. The polar vortex extended to southern Canada. The tropopause (white) increased flying north, and this was reproduced when flying back south.