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Meteoroids of sub-milligram sizes burn up high in the Earth's atmosphere and cause streaks of plasma trails detectable by meteor radars. The altitude at which these trails, or meteors…
The rate and extent of global biodiversity change is surpassing our ability to measure, monitor and forecast trends. We propose an interconnected worldwide system of observation networks — a global biodiversity observing system (GBiOS)…
Major mid-winter stratospheric sudden warmings (SSWs) are the largest instance of wintertime variability in the Arctic stratosphere. Because SSWs are able to cause significant surface weather anomalies on intra-seasonal timescales…
We present an overview of … state-of-the-art chemistry–climate and chemistry transport models that … are … used within phase 1 of the Chemistry–Climate Model Initiative (CCMI-1).
The continent of Antarctica has experienced some of the largest rates of both surface warming and cooling found anywhere on the planet. Unlike in the Arctic, where sea ice has been declining…
A review is presented of passive coherent and incoherent radar observations of … ultra-low-frequency (ULF) waves. Passive radars primarily observe the ionospheric … signatures of the shear Alfven field line resonance (FLR). Recent results … include: