Keyphrases
Methane Emission
71%
Atmospheric Transport
34%
Atmospheric Carbon
32%
Carbon Dioxide
25%
Natural Gas Production
21%
Permian Basin
20%
Pennsylvania
20%
Ethane
19%
Mole Fraction
19%
North America
18%
CO2 Mole Fraction
17%
Emission Rate
17%
CH4 Emission
17%
Methane
17%
Greenhouse Gas
16%
Isotope Ratio
16%
Natural Gas
14%
Marcellus
13%
In Situ
13%
Satellite Observations
12%
Net Ecosystem Exchange
11%
Mid-latitude
11%
Eastern USA
11%
Midwest
11%
Central U.S.
11%
Eastern United States
11%
Atmospheric Inversion
11%
Indianapolis
10%
Nighttime
10%
Oil-type Gas
10%
Delaware
10%
Four Seasons
9%
COVID-19 Pandemic
9%
Gas Production
9%
Meteorological Model
9%
13CH4
9%
Trace Gases
8%
Weather Forecasting
8%
Weather Research
8%
US Midwest
8%
Coal Gas
8%
CH4-CO2
8%
Biomass Burning Sources
8%
Oil Price
8%
Inverse Estimates
8%
Airborne Observations
8%
Emissions Pricing
8%
Cavity Ring-down
8%
Numerical Prediction
8%
Observing System
8%
Earth and Planetary Sciences
Methane
100%
Emissions
85%
Atmospherics
53%
Greenhouse Gas
24%
United States
21%
Natural Gas Production
19%
Pennsylvania
19%
Permian
19%
Trace Gas
17%
Isotopic Ratio
16%
Boundary Layer
12%
Indianapolis
10%
Net Ecosystem Exchange
10%
Satellite Observation
10%
Natural Gas
10%
North America
9%
Atmospheric Inversion
9%
United States of America
9%
Delaware
9%
Spectrometer
8%
Infrared Spectrometer
8%
Field Testing
8%
Geographic Information System
8%
Sulfide
8%
Forward Modeling
8%
Nitrous Oxide
8%
Biomass Burning
8%
Gas Supply
8%
Oil Supply
8%
Troposphere
6%
Wind Velocity
5%
Greenhouse Gas Emission
5%