Thunderstorms and atmospheric composi1on: A mee1ng of cloud physics, dynamics, lightning and chemistry 1. AGU Eos Editor’s Vox: Connec&ng Thunderstorms and Climate Through Ozone 2. Lab. Aerologie, Toulouse seminar: Role of Thunderstorms on Upper Troposphere Ozone – What We Have Learned from DC3 3. IGAC conference talk: Role of Thunderstorms on Upper Troposphere Ozone – What We Have Learned from DC3 4. AGU mee1ng talk: Analysis and Modeling of Trace Gases in Severe Convec&on: The 22 June 2012 DC3 Case 5. AMS mee1ng talk: Analysis and Modeling of Trace Gases in Severe Convec&on: The 22 June 2012 DC3 Case 6. Texas A&M seminar: Role of Thunderstorms on the Composi&on of the Troposphere – What We Have Learned from DC3 7. U. Michigan seminar: Thunderstorms and Atmospheric Composi&on: A Mee&ng of Cloud Physics, Dynamics, Lightning and Chemistry 8. NCAR Day of Discovery and Networking Thunderstorms and Atmospheric Composi&on: A Mee&ng of Cloud Physics, Dynamics, Lightning and Chemistry Who is the audience? What do they know already?
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Thunderstormsandatmosphericcomposi1on:Amee1ngofcloudphysics,dynamics,lightningandchemistry
MaryC.BarthAtmosphericChemistryObserva1onsandModeling
MesoscaleandMicroscaleMeteorologyNa1onalCenterforAtmosphericResearch,Boulder,Colorado
1. AGUEosEditor’sVox:Connec&ngThunderstormsandClimateThroughOzone2. Lab.Aerologie,Toulouseseminar:RoleofThunderstormsonUpperTroposphereOzone–
WhatWeHaveLearnedfromDC33. IGACconferencetalk:RoleofThunderstormsonUpperTroposphereOzone–WhatWe
HaveLearnedfromDC34. AGUmee1ngtalk:AnalysisandModelingofTraceGasesinSevereConvec&on:
The22June2012DC3Case5. AMSmee1ngtalk:AnalysisandModelingofTraceGasesinSevereConvec&on:
The22June2012DC3Case6. TexasA&Mseminar:RoleofThunderstormsontheComposi&onoftheTroposphere–What
WeHaveLearnedfromDC37. U.Michiganseminar:ThunderstormsandAtmosphericComposi&on:AMee&ngofCloud
Physics,Dynamics,LightningandChemistry8. NCARDayofDiscoveryandNetworkingThunderstormsandAtmosphericComposi&on:A
Mee&ngofCloudPhysics,Dynamics,LightningandChemistry
Who is the audience?
What do they know already?
Thunderstormsandatmosphericcomposi1on:Amee1ngofcloudphysics,dynamics,lightningandchemistry
MaryC.BarthAtmosphericChemistryObserva1onsandModeling
MesoscaleandMicroscaleMeteorologyNa1onalCenterforAtmosphericResearch,Boulder,Colorado
1. AGUEosEditor’sVox:Connec&ngThunderstormsandClimateThroughOzone2. Lab.Aerologie,Toulouseseminar:RoleofThunderstormsonUpperTroposphereOzone–
WhatWeHaveLearnedfromDC33. IGACconferencetalk:RoleofThunderstormsonUpperTroposphereOzone–WhatWe
HaveLearnedfromDC34. AGUmee1ngtalk:AnalysisandModelingofTraceGasesinSevereConvec&on:
The22June2012DC3Case5. AMSmee1ngtalk:AnalysisandModelingofTraceGasesinSevereConvec&on:
The22June2012DC3Case6. TexasA&Mseminar:RoleofThunderstormsontheComposi&onoftheTroposphere–What
WeHaveLearnedfromDC37. U.Michiganseminar:ThunderstormsandAtmosphericComposi&on:AMee&ngofCloud
Physics,Dynamics,LightningandChemistry8. NCARDayofDiscoveryandNetworkingThunderstormsandAtmosphericComposi&on:A
Mee&ngofCloudPhysics,Dynamics,LightningandChemistry
Geoscien1stsAtmosphericScien1stsAtmosphericChemistsAtmosphericScien1stsAtmosphericChemistsDept.AtmosphericScien1stsDept.ClimateandSpaceSciencesandEngineeringUpperAtmosphere,Climate,Weather,ChemistryScien1stsAdministrators,SoXwareEngineers,…
DeepConvec*veCloudsandChemistry(DC3)FieldProject• SupportedbyNSF,NASA,DLR• DC3co-PrincipalInves1gators:ChrisCantrell,SteveRutledge,BillBrune,JimCrawford,HeidiHuntrieser(DLR)• DC3ScienceTeamandLogis1calSupport
Thunderstormsandatmosphericcomposi1on:Amee1ngofcloudphysics,dynamics,lightningandchemistry
Acknowledgements First
Why?
It is important to thank the funding
agencies.
It is better to end with your summary
as the last slide.
DeepConvec*veCloudsandChemistry(DC3)FieldProject• SupportedbyNSF,NASA,DLR• DC3co-PrincipalInves1gators:ChrisCantrell,SteveRutledge,BillBrune,JimCrawford,HeidiHuntrieser(DLR)• DC3ScienceTeamandLogis1calSupport
Thunderstormsandatmosphericcomposi1on:Amee1ngofcloudphysics,dynamics,lightningandchemistry
NitrogenOxides(NOx=NO+NO2)Vola1leOrganicCompounds(VOCs) Ozone(O3)
Basic Definition That Audience Should
be Familiar with
(start with something the audience should know)
Amee1ngofcloudphysics,dynamics,lightningandchemistry
CH2O,H2O2,CH3OOH,NOx,O3
Importantozoneprecursorsthataresoluble:CH2O=formaldehydeH2O2=hydrogenperoxideCH3OOH=methylhydrogenperoxide
CH2O,H2O2,CH3OOHandothersolubletracegasesandaerosols
CloudPhysics
Wetdeposi1on
Define acronyms in writing
Say full name
Amee1ngofcloudphysics,dynamics,lightningandchemistry
CH2O,H2O2,CH3OOH,NOx,O3
CH2O,H2O2,CH3OOHandothersolubletracegasesandaerosols Importantozoneprecursorsthataresoluble:
CH2O=formaldehydeH2O2=hydrogenperoxideCH3OOH=methylhydrogenperoxide
Wetdeposi1on
Photochemically-ac1veplumesCH2O,H2O2,CH3OOH,otherVOCs,NOxàO3GHGinUpperTroposphere
TransportLightning-produc1on
ofNOxNo Outline!
For short talks
Wearepredysuretheoutlineisthis:1. Introduc1on/Mo1va1on2. Methods3. Results4. Conclusions
DeepConvec1veCloudsandChemistry(DC3)FieldExperimentAimedtoLearnHowThunderstormsAffecttheComposi1onofthe
Troposphere
May–June2012SampledStormsin• NortheastColorado• WestTexastoCentral
Oklahoma• NorthernAlabama
OverviewPaper:Barthetal.(2015)BAMS DC3SpecialIssueinJGR
• Weatherballoonstocharacterizestormenvironment• RadarsandLightningMappingArraystocharacterizestormandlightning• AircraXtocharacterizecomposi1onintheinflowandoujlowregionsofstorm
Supplemental Information at the
bottom which is usually harder to see by
the audience
Reten1onofMethylHydrogenPeroxideinFreezingDrops
à WRF-Chemsimula1onalsopredictsCH3OOHscavengingefficienciesgreaterthanexpected(<10%)
à CH3OOHscavengingefficiencyvarieswithicereten1onfactor
50-100%CH3OOHretained
H2O2reten1onfactor<25%
CH2Oreten1onfactor<10%
Observation results from Fried et al. (2016) and Barth et al. (2016)
88%77%67%
May21airmassMay29severeJune11MCS
WRF-Chemresults
Observa1ons:
Belaetal.(2016andinprepara1on)
Be sure axes labels can be read
(these are too small)
Reten1onofMethylHydrogenPeroxideinFreezingDrops
à WRF-Chemsimula1onalsopredictsCH3OOHscavengingefficienciesgreaterthanexpected(<10%)
à CH3OOHscavengingefficiencyvarieswithicereten1onfactor
50-100%CH3OOHretained
H2O2reten1onfactor<25%
CH2Oreten1onfactor<10%
Observation results from Fried et al. (2016) and Barth et al. (2016)
88%77%67%
CH3OOHscavengingefficiency
May21airmassMay29severeJune11MCS
WRF-Chemresults
Observa1ons:
Belaetal.(2016andinprepara1on)
Reten1
onFactor(%)
Be sure axes labels can be read
(these have text boxes placed on top)
Thunderstormsandatmosphericcomposi1on:Amee1ngofcloudphysics,dynamics,lightningandchemistry
1. Inseverethunderstorms,somevola1leorganiccompoundsarescavengedbythunderstormsmorethanexpectedàCloudphysicalprocessescouldberesponsible
2. Lightningflashratesarehardtopredict,affec1nges1matesoflightning-NOxproduc1on
3. Lightning-NOxproduc1oncouldbeinfluencedbythesizeofthelightningflash
4. Ozoneischemicallyproducedinconvec1veoujlowregions,butsmall-scalemixingfromthestratospherealsoputsozoneintotheuppertroposphere
Ozoneisagreenhousegasintheuppertroposphere
Last slide contains your conclusions
Why?
(allows audience to read them during questions)
Thank you!
Summary• Whoistheaudience?Whatdotheyknowalready?
– Helpstoconnectaudiencetoyourtopic• Acknowledgementsfirst–notthelastslide• Beginwithsomethingeveryoneisfamiliarwith
– Helpstoconnectaudiencetoyourtopic• Nooutlineforshorttalks–Saves1me• Supplementalinforma1onatbodomofslide
– Bodomofslidemaynotbeseenbyeveryone• Makeiteasyforaudiencetoreadslides
--Axeslabelslargeenoughtobereadbyaudience--Darkledersonlightbackground/lightledersondarkbackground--Defineacronymsinwri1ngaswellassayingthefullname
• Lastslideshouldbeyoursummary(3pointsatmost)– Allowsaudiencetoreadduringques1onandanswerperiod
• Keepslidessimple(determinemainpointandshowonlywhatsupportsyourpoint)
• Keeppresenta*onsimple(tellastorywith1-2mainpoints)• Beexcitedaboutyourwork(ifyouarenotexcited,whowillbe?)
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