They noted significant uncertainties that remain for global temperatures before 1600, but emphasized «surface temperature reconstructions for periods prior to the industrial era are only one of multiple lines of evidence supporting the conclusion that climatic warming is
occurring in response to human activities, and they are not the primary evidence.»
4/7/17 — As the Earth continues to
warm in response to human activities, the prospects of using engineering techniques to control climate change are gaining attention, the New York Times reports, noting that an important step is to invest more in research.
Early work at GFDL relating to carbon focused on CO2 as a greenhouse gas and it's potential for
doubling in response to human activities, through water vapor and other atmospheric feedbacks in the context of latitudinal, land - sea and other inhomogeneities influencing climate (e.g. Manabe 1968, 1986, 1987).
Emissions of carbon dioxide, methane, nitrous oxide and of reactive gases such as sulphur dioxide, nitrogen oxides, carbon monoxide and hydrocarbons, which lead to the formation of secondary pollutants including aerosol particles and tropospheric ozone, have increased
substantially in response to human activities.
«Surface temperature reconstructions for periods prior to the industrial era are only one of multiple lines of evidence supporting the conclusion that climatic warming is
occurring in response to human activities, and they are not the primary evidence.»
It can happen naturally or
in response to human activities, including the burning of fossil fuels and clearing of forests.
It can happen naturally or
in response to human activities, including the burning of fossil fuels.
«Surface temperature reconstructions for periods prior to the industrial era are only one of multiple lines of evidence supporting the conclusion that climatic warming is occurring
in response to human activities, and they are not the primary evidence,» the report said.
In addition to reductions in snow cover extent, which will reduce the mean reflectivity of particular regions, the reflectivity (albedo) of the snow itself may also be changing
in response to human activities.