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Microplastic (MP; plastic particles < 5 mm) pollution is pervasive in the marine environment, including remote polar environments. This study provides the first pan-Antarctic survey of MP pollution in Southern Ocean sea ice by analyzing sea ice cores from several diverse Antarctic regions.
Neutron monitors are integral detectors of secondary cosmic rays. Since each of them … has its own detection efficiency, energy spectra cannot readily be derived from their … observations. To circumvent this problem…
Abstract: Two identical calibration neutron monitors were completed in September 2002. They are … designed to provide an intercalibration between the ¡Ö 50 neutron monitors around the world, so that … rigidity spectra can be calculated from them.
Within a 6-minute span on January 20, 2005, the count rate registered by a neutron monitor at the sea level … station of McMurdo, Antarctica increased by a factor of 30, while the rate at the high-altitude (2820 m) site … of South Pole increased by a factor of 56.
Two calibration neutron monitors were completed in September 2002. These instruments are designed to … provide an intercalibration between the 40-odd neutron monitors around the world, so that rigidity spectra … can be calculated from them.
Besides producing the largest ground level enhancement (GLE) in half a century, the relativistic solar particles … detected during the event of January 20, 2005 showed some interesting temporal and directional features, including extreme anisotropy.