Estimating Urban CO2 Fluxes at High Spatial Resolution from

In Situ ObservationsAlexis Shusterman, UC Berkeley

shusterman.alexis@berkeley.eduhttp://beacon.berkeley.edu

BErkeleyAtmosphericCO2ObservationNetwork2km

~25 independent air quality sensing “nodes” on museum and

elementary school rooftops

465m

PI: Ron Cohen

from Choi et al. 2014

observationsmodeled fit1σ variation range

Particulate Matter(co-emitted with CO2)

VaisalaGMP343 NDIR

CO2 Sensor

Meteorological Sensors for T, P & RH

Microcomputer w/ Cell Antenna

BEACO2N Data Set 2013

Sites: Laurel Korematsu HeadRoyceBurckhalter Kaiser ODowd ElCerritoPrescott CollegePrep StLiz NOakland

Performance Picarro G2301 Vaisala GMP343Accuracy ± 1 ppm ± 7 ppmPrecision ± < 0.2 ppm (5s) ± 3 ppm (2s)

Drift ± 6 ppm/yr ± 8 ppm/yrWeight 58 lbs 0.8 lbsPrice $50,000-100,000 $3,000

2km

Port of Oakland

Daily CO2 Levels at Port of Oaklandships stationaryships in motion

3 PM 8 PM10 AM5 AM

strike (Oct 21)working days

3 PM 8 PM10 AM5 AM

Daily CO2 Levels at Port of Oakland“Last week’s work stoppagebegan before dawn on October21, as roughly 100 owner-operators set up demonstrationsaround the port […]

The shutdown lifted whenlongshoremen returned to theirposts for the 7:00 p.m. shift thatevening.”

-OaklandNorth, UC Berkeley Grad. School of Journalism

3 PM 8 PM10 AM5 AM

strike (Oct 21)working days

Daily CO2 Levels Network Wide

10 km 10 km 10 km

PRIOR POSTERIOR DIFFERENCE

Alex Turner

10 km

1999-2000 Emissions Factors

light-duty passenger vehicles

heavy-duty diesel

Harley et al. 2005

VaisalaGMP343 NDIR

CO2 Sensor

Shinyei GroveParticulate

Sensor

Electrochemical O3, NO, NO2 & CO

Sensors

2km

Sensitivity Spatial Resolution Temporal Resolution☐Multi-Node Analysis☐Chemical Speciation

Thank you!