Keyphrases
Carbon Dioxide
100%
Seoul
100%
Long-term Trend Analysis
100%
Carbon Monoxide Concentration
50%
Relative Reduction
33%
Nitrogen Monoxide
33%
Methane
16%
PM10
16%
Source Process
16%
Strong Correlation
16%
Pollution
16%
Annual Mean
16%
Mercury Hg
16%
Temporal Trends
16%
Sulfur Dioxide SO2
16%
Long-term Trends
16%
Air Pollutants
16%
Decreasing Trend
16%
Nitrogen Dioxide NO2
16%
Three-period
16%
Troposphere
16%
Column Concentration
16%
Carbon Monoxide Emission
16%
Total Carbon
16%
Anthropogenic Carbon
16%
Fast Reduction
16%
Anthropogenic CO2 Emissions
16%
Administrative Regulation
16%
Emission Control Technology
16%
Atmospheric Carbon
16%
Fuel Combustion
16%
Air Quality Monitoring Stations
16%
Earth and Planetary Sciences
Korea
100%
Long-Term Trend
100%
Carbon Monoxide
100%
Trend Analysis
100%
Nitrogen Dioxide
33%
Methane
22%
Nitrogen Monoxide
22%
Atmospherics
11%
Atmospheric Aerosol
11%
Carbon Dioxide Emission
11%
Fuel Combustion
11%
Sulphur Dioxide
11%
Monitoring Station
11%
Air Quality Monitoring
11%
Emission Control
11%
Carbon Monoxide Emission
11%
MOPITT
11%
Anthropogenic CO2
11%
Air Pollutant
11%
Agricultural and Biological Sciences
Carbon Monoxide
100%
Annuals
20%
Methane
20%
Anthropogenic CO2
10%
Troposphere
10%
Air Quality
10%