Topic
550
4
Antarctica
5
Arctic
2
Germany
2
aerosol
2
animal colony
1
atmospheric pollution
2
behaviour
1
civilization
2
concentration (composition)
2
ddc:620
1
emperor penguin
1
envir
8
geo
12
marine atmosphere
2
overwintering
2
ozone depletion
2
partial pressure
2
polar region
2
polar stratospheric cloud
2
pollution monitoring
2
remote-controlled observatory
1
research
2
satellite data
2
smoke
2
stratosphere
2
sulfate
2
time-lapse and video recording
1
wildfire
2