CalNex-LA

A shorcut to this page is http://tinyurl.com/CalNex.

Purpose of this Page

This page is a repository of scientific information and links for the field experiment at the Los Angeles CalNex Supersite (*) as part of the CalNex-2010 field campaign. The focus of the campaign is to study nightime chemistry (led by Jochen Stutz of UCLA) and formation of secondary organic aerosol (led by Joost de Gouw of NOAA and Jose-Luis Jimenez of CU-Boulder). Prospective investigators who are interested in participating in this study should contact these PIs.

(*) Not to be confused with the Southern CA EPA Supersite which is headed by Costas Sioutas and located elsewhere.

There is no specific call for proposals for CalNex-LA. NOAA investigators will be funded by internal NOAA funds, while university investigators need to find relevant funding. CARB and NOAA are funding a limited number of external investigators.

Data Server

The data for the ground site is being moved to this web site from the FTP site, by Ken Aikin of NOAA. The username and password are the same as for the FTP site and the presentations from this Wiki.

Meetings and Plots During the Campaign

• CalNex-LA blog
• Data from the Atlantis Ship
• Meetings while in the field (password protected, campaign participants-ONLY)
  • Slides from organization Mtg. on May 13, 2010
  • 1st Science Mtg on Mon May 17
  • 2nd Science Mtg on Thu May 20
  • 3rd Science Mtg on Mon May 24
  • 4th Science Mtg on Thu May 27
  • 5th Science Mtg on Mon May 31
  • 6th Science Mtg on Thu June 3
  • 7th Science Mtg on Mon June 7
  • 8th Science Mtg on Thu June 10
  • 9th Science Mtg on Mon June 14

• Plots of modeled and measured data, most recent versions as updated during the campaign (password protected, campaign participants-ONLY)
  • Inter-linked Web Archive of Plots main page (last posted Jul 18, 2010)
  • pdf versions of plots, one file per plot type
    • Aerosol Species: Inorganic and Organic (last posted Jun 17 2010)
    • Aerosol Species: BC, other, optical (last posted Jun 17 2010)
    • Met data: Temp, RH, radiation, photolysis (last posted Jun 17 2010)
    • ( Met data: Wind, PBL, ceilometer (last posted Jun 17 2010)
    • Gas Species: O3, SO2, CO, CO2 (last posted Jun 17 2010)
    • Gas Species: NOy and its constituents (last posted Jun 17 2010)
    • Gas Species: Alkanes, Alkenes, Aldehydes, biogenic VOCs (last posted Jun 17 2010)
    • Gas Species: Aromatics, Acetonitrile, DMS, Radicals (last posted Jun 17 2010)

Presentations After the Campaign

• Patrick Hayes, June-2010: Summary of HR-ToF-AMS Analysis of Aerosol Composition
• Conference Calls After the Campaign
  • All on Thu @ 8 am CA, 9 am CO, 11 am East Coast, 4 pm UK, 5 pm Europe
  • 23-Sep-10: NOy
  • 30-Sep-10: Photochemistry
  • 7-Oct-10: Organics in gas and particle phase
  • 14-Oct-10: Black carbon and aerosol radiative properties
  • 28-Oct-10: Nitrogen species
  • 4-Nov-10: Photochemistry
  • 11-Nov-10: Organics
  • 18-Nov-10: Halogens in particle and gas-phase
  • 2-Dec-10: BC, aerosol radiative properties and CCN
  • Conference calls will resume in January 2011, dates TBD

Future meetings

• People are encouraged to present posters at Fall AGU (Dec. 2010, San Francisco)
• A 3-day data analysis meeting will take place in Spring 2011. Tentative dates are May 16-20, 2011 in Sacramento, CA
• The main meeting for presentation of scientific results will be the Fall AGU in 2011 (Dec. in San Francisco)

Model Results for the CalNex-LA Site

• Daily Meteorological Forecast from UCLA.

• Wildfire information:
  • NOAA Satellite Fire Products
  • Locations and dates of planned prescribed burns

• Model Forecasts during the Campaign:
  • CalNex 4-model and ensemble forecasts, provided by Stu McKeen of NOAA
  • CARES forecasts from Jerome Fast (include Sourthern CA)

• Other models that will or may be running the CalNex-LA period and location include:
  • Qinbin Lee and Dan Chen at UCLA (WRF/Chem)
  • Gabi Pfister of NCAR (WRF/Chem)

This is the time to request your favorite variables and we'll request them from Stu. So far we are planning to request:

• Meteorology: T, RH, pressure, wind speed and direction, visible and UV radiation, precipitation
• Gas-phase: CO, CO2, SO2, O3, NO, NO2, HONO, NH3, HNO3, VOCs (benzene, toluene, isoprene, terpenes, CH2O, glyoxal, acetaldehyde, methanol, acetone, etc. as available in models)
• Particle-phase: (in each of PM1, PM2.5, PM10): total number, total mass, sulfate, nitrate, ammonium, chloride, black carbon, organic aerosol, POA, SOA, crustal material, sea salt, metals. Also size distributions (if available in models)
• Both phases: total carbon (to compare to observed TOOC)
• PAN, MPAN, PPN, ClNO2 (Hans Osthoff)

Information and Links for other CalNex Components

• The dates for all the platforms of the larger CalNex campaign, including the LA ground site, are at http://tinyurl.com/calnexschedule.
• CARB homepage on CalNex
• CalNex Science Questions
• CalNex White Paper
• NOAA CalNex Science Plan
• DOE CARES Campaign in the Sacramento area.
• CalMex Campaign at the US-Mexico border.
• EPA Monitoring Site in Pasadena on South Wilson.
• Pictures from the CalNex-LA field site (Michael Lechner)
• The SJV CalNex Supersite will be located on University of California Property in Bakersfield near the corner of S. Mt. Vernon Street and E. Belle Terrace. Coordinates estimated from GOOGLE EARTH: 35°20'46.15"N, 118°57'55.87"W

Logistics During the Campaign

All logistical information is centralized on the CalNex-LA Logistics Page.

Related Information and Links

• Historical Air Quality Data from LA
• South Coast Air Quality Management District (LA local Air Quality Agency)
• Links to publications from many previous studies in LA (with a focus on organic aerosols)
• Study of Organic Aerosols in Riverside (SOAR-2005)
  • Journal papers with SOAR results
• Southern California PM Center and Supersite