southeast nexus (senex)
DESCRIPTION
Southeast Nexus (SENEX) Studying the Interactions Between Natural and Anthropogenic Emissions at the Nexus of Air Quality and Climate Change. Southeast U.S. has high anthropogenic and biogenic emissions, humidity, and photochemistry How do the emissions react to form aerosol and oxidants? - PowerPoint PPT PresentationTRANSCRIPT
Southeast Nexus (SENEX) Studying the Interactions Between Natural and Anthropogenic
Emissions at the Nexus of Air Quality and Climate Change
A NOAA Field Study in the Southeast U.S. in Summer 2013
• Southeast U.S. has high anthropogenic and biogenic emissions, humidity, and photochemistry
• How do the emissions react to form aerosol and oxidants?
• What are the climate-relevant properties of the aerosol?
Modeled aerosol forcingpeaks in the SE U.S.[Leibensperger, ACP 2011]
Modeled aerosol forcingpeaks in the SE U.S.[Leibensperger, ACP 2011]
Scientific Motivation
Southeast U.S.:•Many secondary pollutants and radiative forcings are higher than elsewhere in the Nation
How do anthropogenic and biogenic emissions interact and affect air quality and climate?
How do anthropogenic and biogenic emissions interact and affect air quality and climate?
OMI HCHO column peaks in summer SE U.S. [Millet, 2008]
OMI HCHO column peaks in summer SE U.S. [Millet, 2008]
Organic Aerosol
IMPROVE VReport
IMPROVE VReport
• Observations show highest organics in Southeast
• Satellite AOT shows strong seasonal cycle: biogenic SOA? (But: IMPROVE shows larger cycle for sulfate)
• Role of aqueous-phase processing?
• Role of nighttime oxidation of biogenic VOCs?
• What fraction of SOA is controllable?
Goldstein [2009]
Summer – Winter AOT from MISR
Sulfate Aerosol
IMPROVE VReport
IMPROVE VReport
• Sulfate still represents a major fraction of submicron aerosol in the East and Southeast
• Formation in gas phase vs. clouds poorly understood
Models that include cloud oxidation overestimate sulfate[McKeen, 2007]
Models that include cloud oxidation overestimate sulfate[McKeen, 2007]
Tropospheric OzoneO
zone
(ppb
v)
AM3 modelCASTNET obs
• Many models are biased high in the Summertime SE U.S.
• Yield and fate of isoprene nitrates?
• Nighttime chemistry and removal of NOx?
• Difficulty in modeling the structure of the nighttime boundary layer?
Fiore [2009]
Part of the motivation: Regional Climate Change and its causes
• Eastern U.S. has not warmed since 1950 and has received more precipitation [Portmann, PNAS 2009]
• Connection with aerosol distribution?
• SENEX contribution:1. Describe and improve
understanding of aerosol distribution
2. Describe climate-relevant properties of aerosolNOAA Science Challenge Workshop [2011]
Main Science Questions
1. What are the emissions of aerosol, aerosol precursors and greenhouse gases in the SE U.S.?
2. What is the composition and distribution of aerosol in the SE U.S.?
3. What are the formation mechanisms of secondary species (ozone, sulfate and organics) in the SE U.S.?
4. Which deposition processes are critical for determining atmospheric concentrations of aerosol, ozone and NOy?
5. What are the climate-relevant properties of aerosol in the SE U.S.?
Base of Operations: Smyrna near Nashville
Within range of the NOAA WP-3D:Southeast, Smoky Mountains and OzarksAtlantaSOAS site at CentervilleMississippi valley and mid-West
NashvilleNashville
AtlantaAtlanta
CentervilleCenterville
Collaborations
1. Southern Oxidants and Aerosol Study (SOAS)(Carlton, Goldstein, Jimenez and Guenther)Centerville ground siteC-130 aircraft
2. TropHONO (Zhou and Stutz)C-130 aircraft
3. NAAMEX (Jaffe)C-130 aircraft
4. Other SOAS ground sites:Look Rock, TN; RTP, NC; Birmingham, AL
5. SOAS chamber study (Seinfeld and Wennberg)Caltech
NOMADSSJune 1 – July 15Smyrna
Nashville and Smyrna
Nashville InternationalAirport
Smyrna RutherfordCounty Airport
Hangar 634NOAA WP-3DHangar 634
NOAA WP-3D
Hangar 621NSF C-130
Hangar 621NSF C-130
Hangar 634NOAA WP-3DHangar 634
NOAA WP-3D
Integration NOAA WP-3 SENEX 2013
http://esrl.noaa.gov/csd/projects/senex/
• Payload
• Inlets, exhausts, power, Ethernet
• Schedule
CO
NO, NO2, NOy, O3
TDL H2O
Aerosol lowturbulenceinlet (LTI)
WLOPC
CCN
CRD-AES; PASPSAP; UHSAS
SP2; AMS
Operator seats:NOyO3: C3XCRDS: Sta. 2
PILS/AMS: Sta. 3CIMS: Galley
rotating: Galley
NO3, N2O5
FlightScience
NH3; HNO3
AcidCIMS
iWAS2; NMASS
N42RF layout - SENEX 2013NOAA-CSD version 4 11-09-2012
PANs
cloudprobes
PTR-MSHCHO
ACES glyoxal
SO2
CO2, CH4
Non CSD collaborators CCN: Nenes
HCHO: Hanisco/KeutschAcid CIMS: Thornton
jNO2, jO3
Operator seats:NOyO3: C3XCRDS: Sta. 2
PILS/AMS: Sta. 3CIMS: Galley
rotating: Galley
Non CSD collaborators CCN: Nenes
HCHO: Hanisco/KeutschAcid CIMS: Thornton
2-page scientific instrument descriptions available on the website:
http://esrl.noaa.gov/csd/groups/csd7/measurements/2013senex/P3/integration/inst_worksheets.html
N43RF Exhaust
Will be duplicated on N42RF in March 2013
N42RF Power and Cables
Integration Schedule
April 12: windows and feet to TampaApril 19: truck to TampaApril 22-26: Sta C3X, Sta 8, LTI, WLOPC, FliSciApril 29–May 2: Sta 2, Sta 6a, LIPF, AAMPS pod
Shipping: April 19, 2013
Integration Schedule
May 6-10: Sta 3, Sta 5, CO pod, CCN, j-headsMay 13-17: Sta 4, Sta 6b, Dual PassMay 20-24: AOC prepMay 27-30: Power checks and test flightMay 31: Transit to Nashville
Shipping: April 19, 2013
Integration Schedule
Shipping: April 19, 2013
Integration Schedule
July 15: transit to TampaJuly 16-17: de-integrationJuly 18: truck to BoulderJuly 19: unload truck go to the Rio
Shipping: April 19, 2013
NO, NO2, NOy, O3
TDL H2O
Aerosol lowturbulenceinlet (LTI)
WLOPC
Week 1:LTI+WLOPC
Sta. C3XSta. 8J-cab
N42RF integration- SENEX 2013NOAA-CSD Week 1 10-01-2012
cloudprobes
PTR-MSHCHO
Fl. Sci. comp
NO, NO2, NOy, O3
TDL H2O
Aerosol lowturbulenceinlet (LTI)
WLOPC
CRD-AES; PASPSAP; UHSAS
Week 2:Sta. 2
AMPS podSta. 6a
Sta. 7+LIPF
NO3, N2O5
NH3; HNO3
iWAS2; NMASS
N42RF integration- SENEX 2013NOAA-CSD Week 2 10-01-2012
cloudprobes
PTR-MSHCHO
Fl. Sci. comp
Acid CIMS
CO
NO, NO2, NOy, O3
TDL H2O
Aerosol lowturbulenceinlet (LTI)
WLOPC
CCN
CRD-AES; PASPSAP; UHSAS
SP2; PILS; AMS
Week 3:CO podSta. 3Sta.5CCN
J-heads
NO3, N2O5
NH3; HNO3
Acid CIMS
iWAS2; NMASS
cloudprobes
PTR-MSHCHO
glyoxal
SO2CO2, CH4
jNO2, jO3
Fl. Sci. comp
N42RF integration- SENEX 2013NOAA-CSD Week 3 10-01-2012
CO
NO, NO2, NOy, O3
TDL H2O
Aerosol lowturbulenceinlet (LTI)
WLOPC
CCN
CRD-AES; PASPSAP; UHSAS
SP2; PILS; AMS
Week 4:Sta 4
Sta. 6bDual Pass
NO3, N2O5
NH3; HNO3
Acid CIMS
iWAS2; NMASS
PANs
cloudprobes
PTR-MSHCHO
glyoxal
SO2CO2, CH4
jNO2, jO3
N42RF integration- SENEX 2013NOAA-CSD Week 4 10-21-2012
Fl. Sci. comp
Summary
http://esrl.noaa.gov/csd/projects/senex/
Shipping date: April 19, 2013 (4 months and 8 days away)
Next: Hazmat
Questions?