Estimating Urban CO 2 Fluxes at High Spatial Resolution from In Situ - - PowerPoint PPT Presentation

Estimating Urban CO2 Fluxes at High Spatial Resolution from In Situ Observations

Alexis Shusterman, UC Berkeley

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

BErkeley Atmospheric CO2 Observation Network

2km

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

465m

PI: Ron Cohen

from Choi et al. 2014

• bservations

modeled fit 1σ variation range

Particulate Matter (co-emitted with CO2)

Vaisala GMP343 NDIR CO2 Sensor Meteorological Sensors for T, P & RH Microcomputer w/ Cell Antenna

BEACO2N Data Set 2013

Sites: Laurel Korematsu HeadRoyce Burckhalter Kaiser ODowd ElCerrito Prescott CollegePrep StLiz NOakland

Performance Picarro G2301 Vaisala GMP343 Accuracy ± 1 ppm ± 7 ppm Precision ± < 0.2 ppm (5s) ± 3 ppm (2s) Drift ± 6 ppm/yr ± 8 ppm/yr Weight 58 lbs 0.8 lbs Price $50,000-100,000 $3,000

2km

Port of Oakland

Daily CO2 Levels at Port of Oakland

ships stationary ships in motion

3 PM 8 PM 10 AM 5 AM

strike (Oct 21) working days

3 PM 8 PM 10 AM 5 AM

Daily CO2 Levels at Port of Oakland

“Last week’s work stoppage began before dawn on October 21, as roughly 100

• wner-
• perators set up demonstrations

around the port […] The shutdown lifted when longshoremen returned to their posts for the 7:00 p.m. shift that evening.”

• OaklandNorth, UC Berkeley Grad.

School of Journalism

3 PM 8 PM 10 AM 5 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

Vaisala GMP343 NDIR CO2 Sensor Shinyei Grove Particulate Sensor Electrochemical O3, NO, NO2 & CO Sensors

2km

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

Thank you!