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Astronomers may have found a signature of life on Venus(图)
Astronomers signature life Venus
2020/9/18
The astronomers detected a spectral fingerprint, or light-based signature, of the gas phosphine in Venus' atmosphere. Scientists had previously shown that if this poisonous gas were detected on a rock...
Oxygen isotopic signature of CO2 from combustion processes
Oxygen isotopic CO2 combustion processes
2011/2/25
For a comprehensive understanding of the global carbon cycle precise knowledge of all processes is necessary. Stable isotope (13C and 18O) abundances provide information for the qualification and the ...
Physical interpretation of the spectral radiative signature in the transition zone between cloud-free and cloudy regions
Physical interpretation spectral radiative signature transition zone cloud-free and cloudy regions
2009/3/13
One-second-resolution zenith radiance measurements from the Atmospheric Radiation Measurement program's new shortwave spectrometer (SWS) provide a unique opportunity to analyze the transition zone bet...
Weekly cycle of NO2 by GOME measurements: a signature of anthropogenic sources
Weekly cycle NO2 anthropogenic sources
2009/3/11
Nitrogen oxides (NO+NO2=NOx and reservoir species) are important trace gases in the troposphere with impact on human health, atmospheric chemistry and climate. Besides natural sources (lightning, soil...
Signature of Arctic surface ozone depletion events in the isotope anomaly (Δ17O) of atmospheric nitrate
Arctic surface ozone isotope anomaly atmospheric nitrate
2008/12/3
We report the first measurements of the oxygen isotope anomaly of atmospheric inorganic nitrate from the Arctic. Nitrate samples and complementary data were collected at Alert, Nunavut, Canada (82°30 ...
Synchronisation of the EDML and EDC ice cores for the last 52 kyr by volcanic signature matching
EDML EDC ice volcanic signature matching
2008/11/5
A common time scale for the EPICA ice cores from Dome C (EDC) and Dronning Maud Land (EDML) has been established. Since the EDML core was not drilled on a dome, the development of the EDML1 time scale...