HALO

BLUESKY / CAFE-EU

Examination of the atmosphere during the Coronavirus lockdown

Mission status: Completed

Persons in Charge

Mission-PI

  • Jos Lelieveld (MPI-C)
  • Joachim Curtius (Univ. Frankfurt)

Mission coordinator​

  •  Marcel Dorf (MPI-C)

HALO Deployment Base

Time Period

February – June 2020

Project description

In Spring 2020, worlwide measures to control the spread of the Corona virus became effective. These measures led to significant reductions in industrial activities as well as transportation, including air traffic. BLUESKY made use of this unprecedented situation and investigated the effects of anthropogenic emission by performing measurements in a far less perturbed atmosphere. The object was to analyze the impact of anthropogenic activities on atmospheric composition, aerosols, clouds and climate. The obtained results were compared with prior HALO campaigns which performed comparable measurements.

Two research aircrafts were deployed for these investigations. Beside HALO, the DLR Falcon performed scientific flights. From 16 May to 9 June 2020, the two research aircraft performed 20 flights over Europe and the North Atlantic. Satellite observartions and model studies complete the analyses.

One specific aspect of the mission was to investigate the effect of air traffic on cirrus clouds, as air traffic was reduced by 90%. For this aim, research flights took also place over the Atlantik Ocean in the vicinity of the flight corridor to North America.

HALO takes off for the mission BLUESKY, Credit: DLR (CC BY-NC-ND 3.0)

Partners

    • Max Planck Institute for Chemistry, Mainz
    • German Aerospace Center, Institute of Atmospheric Physics (DLR-IPA), Oberpfaffenhofen
    • Goethe University Frankfurt
    • Leibniz Institute for Tropospheric Research, Leipzig
    • Forschungszentrum Jülich
    • Karlsruhe Institute of Technology

Scientific instruments and payload configuration

  • List of scientific instruments for the mission:

Scientific
Instrument
Acronym
Measured
Species/
Parameters
Principal
Investigator​
Institution
HALO-CIMSPAN/PAA, SO2, ClNO2, HCl, HNO3John CrowleyMPI-C
HALO-MGCNMVOCJonathan WilliamsMPI-C
TRIHOPTotal peroxides, H2O2, CO, HCHO, CH4Horst FischerMPI-C
NOAH/ATILLANO, NO2Horst FischerMPI-C
PTR-MS TOFOVOC Jonathan WilliamsMPI-C
HORUSOH/HO2Hartwig HarderMPI-C
LIF-SO2SO2Hartwig HarderMPI-C
C-ToF-AMSAerosol composition (non-refractory)Johannes SchneiderMPI-C
CCN RackCCN, BC, aerosol impactorMira PöhlkerMPI-C
FASDAerosol number and size distributionMira PöhlkerMPI-C
CI-APiTOF MSH2SO4, HOMs, MSA, amines, clustersJoachim CurtiusUni Frankfurt
HALO-SRActinic FluxBirger BohnFZ Jülich
FAIROO3Andreas ZahnKIT
BAHAMASP, T, wind, humidity, TAS, position, alt., H2O mixing ratio (gas phase) Andreas GiezDLR-FX

HALO flights for this mission

Aircraft registrationDateTake off - LandingTotal flight timeFrom - ToMission #
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CODE - CODE5
D-ADLRDatehh:mm:ss - hh:mm:sshCODE - CODE6
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D-ADLRDatehh:mm:ss - hh:mm:sshCODE - CODE8
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D-ADLRDatehh:mm:ss - hh:mm:sshCODE - CODE10
D-ADLRDatehh:mm:ss - hh:mm:sshCODE - CODE11

More information

No additional information available at this time.

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