Physics & Astronomy
stratosphere
69%
ozone
62%
evaluation
36%
mixing ratios
34%
gases
29%
polar regions
16%
tracers
13%
Upper Atmosphere Research Satellite (UARS)
12%
temperate regions
10%
annual variations
10%
Southern Hemisphere
9%
nitrous oxides
9%
winter
9%
summer
8%
hemispheres
8%
water vapor
7%
humidity
7%
methane
6%
depletion
6%
chemistry
6%
vapor phases
5%
boundary conditions
5%
gradients
4%
performance
3%
simulation
2%
temperature
2%
Agriculture & Biology
stratosphere
100%
ozone
60%
mixing ratio
45%
gases
43%
nitrous oxide
18%
tracer techniques
16%
General Circulation Models
13%
subtropics
8%
water vapor
8%
methane
7%
chemistry
7%
humidity
7%
seasonal variation
7%
geographical distribution
6%
winter
5%
summer
5%
temperature
3%
Earth & Environmental Sciences
stratosphere
54%
ozone
44%
mixing ratio
33%
gas
29%
chemical
28%
tracer
12%
distribution
11%
comparison
10%
nitrous oxide
8%
transport process
8%
general circulation model
7%
humidity
6%
water vapor
6%
seasonal variation
6%
boundary condition
6%
methane
6%
winter
5%
summer
4%
simulation
3%
temperature
3%
analysis
2%
Chemical Compounds
Stratosphere
89%
Ozone
58%
Water Vapor
7%
Methane
6%
Simulation
5%