Observation of CO2 concentration in Saint-Petersburg in 2013

1. Analysis of the observations of CO2
concentrations in the ambient air at the
Peterhof station
Stefani Foka Dept. of Atmospheric Physics, SPbU

2. In 2000 the growth rate of CO2 achieved 1.7% per year (or 2.2 ppm/per year).
CO2 growth rate in the atmosphere
In the 19th century CO2 concentrations in the atmosphere started to increase.

3. Global Greenhouse Gas Reference Network

4. Outline
-to estimate temporal variations of CO2 concentration
observed at the Peterhof station in 2013;
-to compare our results with independent
measurements and modeling results;
- to analyze reasons which could be responsible for the
variations of CO2 concentration.

5. Location of the measurement site
Location: 59.88°N, 29.83°E, 20m asl.
Peterhof is the suburb of Saint-Petersburg
(~35 km westward from the city center).

6. Gas analyzer for CO2 monitoring
LGR greenhouse gas analyzer (CO2, CH4, H2O):
off-axis integrated cavity output
spectroscopy technique
LGR performs measurements every 20
seconds.
Measurement error: 100 ppb

7. Annual variation of CO2 in Spb in 2013
min values of CO2, ppm
mean values of CO2,
ppm
max values of CO2, ppm
CO2,ppm
month

8. Russian stations that measure CO2
71°41′13″ N
128°52′09″ E
Tiksi
69°09′51″ N
35°08′26″ E
Teriberka
59.88°N,
29.83°E,
20m asl
Peterhoff
Peterhof is the suburb of Saint-Petersburg
(~35 km westward from the city center).

9. Annual variation of CO2 with values from 16 to 18 hours
CO2,ppm

10. Diurnal variations of CO2 in SPb in 2013
CO2,ppm

11. Time
CO2,ppm Concentration of CO2 in February
No
wind
North-
east,
1-3 m/s
Temperature
inversion
Temperature
inversion
West, north-west,
day: 2-5 m/s,
night: 6-12 m/s
hh21 February
20 February 22-28 February

12. Temperature profile in Spb
0
5000
10000
15000
20000
25000

13. Temperature profile in Spb
1000
2000
3000
4000
5000
0
Temperature
inversion

14. Hybrid Single-Particle Lagrangian Integrated
Trajectory —(HYSPLIT) Model
The HYSPLIT model is a complete system
for computing simple air parcel
trajectories to complex dispersion and
deposition simulations. The intial
development was a result of a joint
effort between NOAA and Australia's
Bureau of Meteorology.

15. Dispersion of polluted air from Saint-Petersburg (21.02.2013)
0 – 4 am. East, north-east winds 1 – 5 pm. Calm
5 – 9 pm. Calm, then west winds

16. Summary