6 Validation Plan
6.1 JEM/SMILES measurements
6.2 Basic strategy
6.3 Validation for O3, HCl and ClO
6.4 Validation for BrO and HNO3
6.5 Validation for other species
6.6 Collaboration for validation
6.7 Support for validation activities
6.8 Summary

JEM/SMILES measurements

Target molecules and expected quality
km
60

50

40

30

5%
20%
50%80%2010
O3HCl

ClO CH3CN

HNO3 HOClHO2BrOO3isotopes

What is the suitable way how to establish and maintain the quality of data,
especially halogen molecules (ClO, HO2 and BrO)?
=> Continuous activity for validation is required.

JEM/SMILES measurements

Foot points and measurement opportunity

The measurement area is extended toward the northern hemisphere (65oN – 38oS).

Basic strategy of the JEM/SMILES
validation experiment

Basic strategy

A plan for JEM/SMILES validation consists of three category issues.
zzFor species which vertical distribution can be retrieved fromone-scan data (O3, HCl and ClO) with JEM/SMILES, one-to-one
comparison with other validated data which are obtained withground, balloon and satellite instruments, is required.
For species whose vertical distribution is retrieved from area or
temporal averaged data with JEM/SMILES,a) if validation data even with some limitation (column dataonly) are obtained, such as BrO and HNO3, comparison with thedata is needed.
b) if validation data are not provided at present, such as CH3CN
and HOCl, comparison with model simulation results as well as
experimental measurements with ground/balloon instruments
is needed.

Validation for O3, HCl and ClO

Validation for O3, HCl and ClO

For these species, many kinds of data from ground/balloon/satellite are
obtained and archived in public place. The SMILES science team basicallyplans to use these data for validation. In addition, some activities ofcampaign measurements are also supported (but without financialcontribution).
zzz

O3: from tropopause to middle stratosphere=> routine measurements with balloon/ground/satellite
upper stratosphere and mesosphere=> applying proposals on validation is encouraged. Especially,ground-based microwave measurements are preferable for validation
HCl: a ground-based FTIR is the most powerful tool for validation=> routine measurements, proposals on intensive (campaign)measurements are also encouraged.
ClO: microwave satellites and a ground-based microwave instrument isprovided an unique dataset for validation=> applying proposals on validation from microwave colleagues ishighly encouraged.

Routine measurement:

Validation for O3, HCl and ClOWOUDC archive data based on total column andvertical profile of O3 at WMO-GAW and SHADOZMany sites (>80%) are located in the JEM/SMILES measurement area.
=> Large number of the correlative measurements for O3 is expected.

Validation for O3, HCl and ClO

Campaign in tropical region

Soundings of Ozone and Water in the Equatorial Region/Pacific Mission(SOWER/Pacific)

Miraizzz

Shoyo-maru

Filling the gap of data sparse area such as in the equatorial
Pacific using balloon observations in collaboration withNOAA/CMDL
Understanding the climatology and variability of ozone andwater vapor
Tropospheric chemistry, Satellite validation ...

NDACC instruments andmeasured properties

Validation for O3, HCl and ClO

Dobson & Brewer: O3 column
Sondes: vertical profile of T, O3, aerosol
UV/Visible spectrometer: column of O3, NO2, BrO, OClO, …
LIDAR: vertical profile of T, O3, aerosol
FTIR: column and vertical profile of O3, HCl, HNO3, ClONO2,N2O, CH4, HF and more
Microwave: vertical profile of O3, ClO, H2O, …

Validation for O3, HCl and ClO

FTIR at Poker Flat, Fairbanks, ALASKA
Validation of O3, HCl, HNO3

Solar
Absorption
Observation

ACE-FTS validation campaign
・HNO3, ClONO2, and N2O5
M. A. Wolff et al., Atmos. Chem. Phys. Discuss., 8, 2429-2512, 2008
・ Ozone:E. Dupuy et al., Atmos. Chem. Phys. Discuss., 8, 2513-2656, 2008
・ HCl, HF, CCl3F and CCl2F2
E. Mahieu et al., Atmos. Chem. Phys. Discuss., 8, 3431-3495, 2008
< Specification of FTS>
FTIR： Bruker 120HR
Frequency resolution： 0.0019cm-1
Frequency Region： 750 - 4200cm-1
Detector：MCT, InSb

ILAS-II Validation campaign
・ O3, HNO3, and temperature
M. Yamamori et al., J. Geophys.Res., Vol.111, No.D11,.2005JD006438(2006)
MLS validation campaign

Validation for O3, HCl and ClO

ClO measurements at Las Campanas
Observatory in Chile

MLSThis work

Validation for BrO and HNO3

Validation for BrO and HNO3

For these species, retrieval of vertical distribution with SMILES requires toaverage obtained spectra because the emission is weaker than that of O3,HCl and ClO.
The SMILES Science Team strongly encourages to apply your research
proposals for colleagues who have been measured them or who have aplan to measure them.
z

BrO: column measurement with a ground-based UV/Visspectrometerz

HNO3: column and vertical distribution measured with a groundbased FTIRNDACC instruments andmeasured properties

Validation for BrO and HNO3

Dobson & Brewer: O3 column
Sondes: vertical profile of T, O3, aerosol
UV/Visible spectrometer: column of O3, NO2, BrO, OClO, …
LIDAR: vertical profile of T, O3, aerosol
FTIR: column and vertical profile of O3, HCl, HNO3, ClONO2,N2O, CH4, HF and more
Microwave: vertical profile of O3, ClO, H2O, …

Validation for other species

Validation for other species

For other species measured with JEM/SMILES, their vertical distribution isretrieved from a spatial or temporal averaged spectrum.
The SMILES Science Team encourages all colleagues who interested
in measurements and sciences related to these species to collaborate with
the Science Team for better understanding and validation as well as
applying for the Research Announcement.
z

HOCl and CH3CN?

z

HO2: ground-based millimeter-wave?

z

O3 isotope: ?

Validation for other species

Comparison with model results

Example of CCSR/NIES modelresults:
More BrO in sunlit area withsteep increase/decrease atdawn/dusk
Slightly larger maximum inthe morning than in theevening
Local min. around 13- 14LT(~20% lower thanmorning/evening max.)

Diurnal variations can be compared with resultsfrom the chemical transport model output.

Collaboration for validation

Collaboration for validation
A site where coordinated measurements of the species relatedwith the SMILES measurements are made, is a great ability for
the JEM/SMILES validation. The SMILES Science Team seeks
possibility to collaborate with such a site, especially on intensive
measurements or cooperated measurements for validation.
Otherwise, we also strongly encourages to apply the proposals
from such a site.

Support for validation activities

Support for validation activities
The SMILES Science Team provides you…
Finder of JEM/SMILES measurement locations(with prediction)
Data handling and viewing softwares if you need
(HDF data)
Coordinate validation campaigns & meetings(with limited financial support)
Advance access to the JEM/SMILES data
including preliminary results
Issue reports on validation activity and results
and more…

Finder of JEM/SMILES
measurement locations

Support for validation activities

Summary

Summary• A plan for JEM/SMILES validation consists of three category issues.

– For O3, HCl and ClO: one-to-one comparison with other validated data
which is mainly obtained with routine measurements– For BrO and HNO3: comparison with validation data even with somelimitation (ex. column)– For other species: comparison with model simulation results as well as
experimental measurements with ground/balloon instruments• The SMILES Science Team seeks possibility to collaborate with a sitewhere coordinated measurements of the species related with theSMILES measurements are made and where intensive
measurements or cooperated measurements for validation isstrongly desirable. Otherwise, we also strongly encourages to apply
the proposals from such a site Protocol and guide line for theJEM/SMILES validation will be defined as soon as possible.
• The SMILES Science Team supports your validation activities toprovide some software tools and to coordinate validation
campaigns and meetings as well as to issue reports on validation
activities.