However, determining just how, and by how much, has yielded
mixed results — not only because of questions around the realism of related studies, but also because parsing the contributing
impacts of other threats to bees, such as
climate change, has been difficult.
As author and co-editor of a new fire book, «The Ecological Importance of
Mixed - Severity Fires — Nature's Phoenix,» I would like to comment on Lindon's hypothesis that by «controlling» fire we can reduce
climate change impacts.
More often, however, the
impacts of multiple influences are
mixed together, and further confused by imperfect knowledge of how each of them has
changed, and uncertainties in how
climate itself has varied.
Topics that I work on or plan to work in the future include studies of: + missing aerosol species and sources, such as the primary oceanic aerosols and their importance on the remote marine atmosphere, the in - cloud and aerosol water aqueous formation of organic aerosols that can lead to brown carbon formation, the primary terrestrial biological particles, and the organic nitrogen + missing aerosol parameterizations, such as the effect of aerosol
mixing on cloud condensation nuclei and aerosol absorption, the semi-volatility of primary organic aerosols, the importance of in - canopy processes on natural terrestrial aerosol and aerosol precursor sources, and the mineral dust iron solubility and bioavailability + the
change of aerosol burden and its spatiotemporal distribution, especially with regard to its role and importance on gas - phase chemistry via photolysis rates
changes and heterogeneous reactions in the atmosphere, as well as their effect on key gas - phase species like ozone + the physical and optical properties of aerosols, which affect aerosol transport, lifetime, and light scattering and absorption, with the latter being very sensitive to the vertical distribution of absorbing aerosols + aerosol - cloud interactions, which include cloud activation, the aerosol indirect effect and the
impact of clouds on aerosol removal +
changes on
climate and feedbacks related with all these topics In order to understand the
climate system as a whole, improve the aerosol representation in the GISS ModelE2 and contribute to future IPCC
climate change assessments and CMIP activities, I am also interested in understanding the importance of natural and anthropogenic aerosol
changes in the atmosphere on the terrestrial biosphere, the ocean and
climate.