Why a tall tower?

Whereas during night time the lower levels of the atmosphere are highly influenced by respiration processes of the ground, the 304 m height of the tall tower guarantees that the tower top always sees concentrations that are representative for the free troposphere.

Thus the air arriving at the 301 m level has a large area, that is influencing the measurement at ZOTTO site. Based on ECMWF forecast data, the STILT model calculates the back trajectories of the air parcels that result in a suitable footprint.

Research Activities:

  • Contiuous CO2 and CH4 Gas Measurements at 301, 227, 158, 92, 52, and 4 m height
  • Contiuous Aerosol Measurements at 301, and 52 m height with self made instrument
  • Contiuous CO Measurements at 301, and 52 m height
  • Contiuous Ozone, and NOx Measurements at 30 m height
  • Contiuous Meteorology Measurements at 301, 227, 158, 92, 52, and 4 m height, and on the ground (Temperature, Wind, Humidity)
  • Biweekly Flask Sampling at 301 m height
  • Various irregular ecosystem measurements
Data coverage
year20052006200720082009201020112012
quarter1 2 3 41 2 3 41 2 3 41 2 3 41 2 3 41 2 3 41 2 3 41 2 3 4
CO2, CH4o o o ** * X XX * o oo o o oo * X XX X * X. . . .. . . .
CO, N2O, O2/N2o o o ** * X XX * o ostopped    
aerosolso o o oo o X XX X X XX X X XX X X XX X X X. . . .. . . .
COo o o oo o X XX X * ** * o oo o o *X X X X. . . .. . . .
O3, NOxo o o oo o o oo * X Xo o o oo o o XX X . .. . . .. . . .
meteoo o o oo o o oo o o oo o o oo X X XX X X *. . . .. . . .
flaskso o o oo o * XX X X XX X * oo X X XX X . .. . . .. . . .

Legend: X = data recorded, * = limited availability, o = no data, . = not updated