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.

Logistics

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

Model Results for the CalNex-LA Site

• Daily Meteorological Forecast from UCLA.

• Stu McKeen of NOAA will be analyzing several 3D forecast models during CalNex. He can export whichever output we request (assuming it is in the model) and provide it online, so that it can be compared with the measurements in near real time. See e.g. some Pre-CalNex model results here and some forecast results for Houston-2006 here.
• Other models that will or may be running the CalNex-LA period and location include:
  • Qinbin Lee and Dan Chen at UCLA
  • Jerome Fast of PNNL (not during CalNex but afterwards)
  • Gabi Pfister of NCAR

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.
• 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

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