Platform: NOAA-CHEM Twin Otter Payload
The NOAA-CHEM Twin Otter instrument payload is designed to investigate the nighttime chemical transformation of fire plumes and is capable of monitoring the diurnal variation of the emissions from individual fire plumes. The sampling strategy will involve daytime and nighttime flights, and multiple flights in a day over the viable range of this aircraft to sample emissions, short-range photochemistry, nighttime chemistry and variation in fire intensities over shorter time scales. The range of sampling is anticipated to be on the order of 100 - 200 km downwind of a fire source, corresponding to 3-10 hours of transport time for a range of wind speeds.
| Station | Instrument | Species Measured | Investigators | Institution |
|---|---|---|---|---|
| 1 | Picarro CRDS | CO, CO2, CH4, H2O | Colm Sweeney | NOAA ESRL GMD |
| 1 | Met Probe & Diff GPS | RH, Temp, Pres, Winds, GPS, flight data | Mike Robinson, Steve Brown | NOAA ESRL CSD |
| 1 | Tenax cartridge autosampler | Speciated VOC | Kelley Barsanti, Lindsey Hatch, Avi Lavi, Paul Van Rooy | UC Riverside |
| 2 | I- ToF CIMS | Acids (HNO3, HONO, Organics), acid gases (N2O5, ClNO2), Oxygenated organics, Organic nitrates, Halogens | Joel Thornton, Brett Palm, Carley Fredrickson Zach Decker | University of Washington NOAA ESRL CSD |
| 3 | Aerosol Mass Spectrometer (AMS) | Non-refractory PM1 aerosol composition | Ann Middlebrook, Ale Franchin Kathy Hayden, Shao-Meng Li | NOAA ESRL CSD ECCC |
| 3 | Ultra-High Sensitivity Aerosol Spectrometer (UHSAS) | aerosol size distributions from 70 to 1000 nm | Ale Franchin, Ann Middlebrook | NOAA ESRL CSD |
| 3 | Continuous Light Absorption Photometer (CLAP) | aerosol light absorption coefficient | Ale Franchin, Ann Middlebrook | NOAA ESRL CSD |
| 4a | Brown Carbon PiLS | Spectrally resolved aerosol absorption | Rebecca Washenfelder Lisa Azzarallo | NOAA ESRL CSD York University |
| 4b Floor | Chemiluminescence | NO, NO2, O3 | Andy Weinheimer, Denise Montzka, Geoff Tyndall, Frank Flocke | NCAR |
| 4a | TRAC Sampler | Particle composition, mixing state, morphology | Alex Laskin, Jay Tomlin, Kevin Jankowski | Purdue University |
| 4a | Offline WSOC analysis | Particle composition | Cora Young, Lisa Azzarallo | York University |
| Camera port | jNO2 heads | NO2 photolysis rates | Mike Robinson | NOAA ESRL CSD |