Who has the responsibility to make altimeter corrections in cold temperatures?
I don't have enough points to make a comment so I'll just leave this one...
http://code7700.com/altimeter_temperature_correction.htm

All throughout, it's
Pilot In Command...
Pilot In Command...
Pilot In Command...
Pilot In Command...


  4.1.4 Air traffic control (ATC). If an aircraft is cleared by ATC to an altitude which the pilot-in-command finds unacceptable due to low temperature, then the pilot-in-command should request a higher altitude. If such a request is not received, ATC will consider that the clearance has been accepted and will be complied with. See Annex 2 and the PANS-ATM (Doc 4444), Chapter 6.