concentrations

Credit: Pixabay/CC0 Public Domain First it was the eerie images of barrels leaking on the seafloor not far from Catalina Island. Then the shocking realization that the nation's largest manufacturer of DDT had once used the ocean as a huge dumping ground—and that as many as half a million barrels of its acid waste had been poured straight into the water. …

 Impacts of global fire carbon emissions on atmospheric CO2 concentration. Credit: AIR Global fires have widespread impacts on the global carbon cycle and atmospheric environment with immediate direct carbon emissions. Fire carbon emission has substantial spatiotemporal variabilities and contributes to the dynamics of global CO2 distributions and variances. …

Time dependence of the concentration of carbon dioxide and methane since 2003. Credit: Institute for Environmental Physics at the University of Bremen Preliminary analyses of global satellite data by environmental researchers at the University of Bremen show that atmospheric concentrations of the two important greenhouse gases carbon dioxide (CO2) and methane (CH4) continued to rise sharply in 2022. The increase in both gases…

Estimated trends for Aitken mode Dp and N at measurement sites. Trend has been calculated by DLM; see Sect. 2.3.1 for details. The overall trend presented in the figure is comparable with the long-term trend estimates given in Sect. 3.1. To get a DLM trend for 1 year, the 1 d trend given by the model was multiplied by the number of days in a year (365 used for all years) and divided by the mean of the variable over the first observed year. For example,…

A diagram of the different interpretations for Monthly and Daily Precipitation sampling. The monthly precipitation data are based on classic isotopic effects, such as location, e.g., a tropical or continental climate. However, measuring isotopic composition every day reflects the fingerprints of moisture transport and convective activity. Credit: Didier Gastmans An isotope of a chemical element contains the same number of…