135 citations
- University of KansasUS26 papers
- University of Illinois Urbana-ChampaignUS5 papers
- Lawrence Livermore National LaboratoryUS3 papers
- Smithsonian Environmental Research CenterUS3 papers
- University of Wisconsin–MadisonUS3 papers
- Centre National de la Recherche ScientifiqueFR2 papers
- College of CharlestonUS2 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR2 papers
- Goddard Space Flight CenterUS2 papers
- Laboratoire AstroParticule et CosmologieFR2 papers
- MidAmerica Nazarene UniversityUS2 papers
- National Research Nuclear University MEPhIRU2 papers
6 papers · 1 filter
Atmospheric constituents and surface-level UVB: implications for a paleoaltimetry proxy and attempts to reconstruct UV exposure during volcanic episodes
Brian C. Thomas, Byron D. Goracke, Sean M. Dalton
Chemical and morphological features of spores and pollens have been linked to changes in solar ultraviolet radiation (specifically UVB, 280-315 nm) at Earth's surface. Variation in…
Reductions in Depth-integrated Picophytoplanktonic Photosynthesis Due to Inhibition by Ultraviolet and Photosynthetically Available Radiation: Global Predictions for and
Patrick J. Neale, Brian C. Thomas
Phytoplankton photosynthesis in most natural waters is often inhibited by ultraviolet (UV) and intense photosynthetically available radiation (PAR) but the effects on ocean product…
Reply to comment by K.A. Duderstadt et al. on "Atmospheric ionization by high-fluence, hard spectrum solar proton events and their probable appearance in the ice core archive"
Claude M. Laird, Adrian L. Melott, Brian C. Thomas +2
Duderstadt et al. [2016b] comment that the Melott et al. [2016] study of nitrate formation by solar proton events (SPEs) and comparison with the ice core archive is "fundamentally…
Terrestrial Effects Of Nearby Supernovae In The Early Pleistocene
Brian C. Thomas, E. E. Engler, M. Kachelrieß +3
Recent results have strongly confirmed that multiple supernovae happened at distances ~100 pc consisting of two main events: one at 1.7 to 3.2 million years ago, and the other at 6…
Solar irradiance changes and phytoplankton productivity in Earth's ocean following astrophysical ionizing radiation events
Patrick J. Neale, Brian C. Thomas
Two atmospheric responses to simulated astrophysical ionizing radiation events significant to life on Earth are production of odd-nitrogen species, especially NO2, and subsequent d…
Atmospheric ionization by high-fluence, hard spectrum solar proton events and their probable appearance in the ice core archive
Adrian L. Melott, Brian C. Thomas, Claude M. Laird +2
Solar energetic particles ionize the atmosphere, leading to production of nitrogen oxides. It has been suggested that some such events are visible as layers of nitrate in ice cores…