Phys.org June 21, 2024 Vertical particle distributions are required to study aerosol–cloud interaction over sea ice comprehensively. An international team of researchers (Germany, USA – University of Colorado) presented vertically resolved measurements of aerosol particle number concentrations and sizes using tethered balloons with the data collected during the Multidisciplinary drifting Observatory for the Study of Arctic Climate expedition in the summer of 2020. Radiosoundings, cloud remote sensing data, and 5-day back trajectories supplemented the analysis of thirty-four profiles of aerosol particle number concentration observed in 2 particle size ranges above 150 nm (N>150). The majority of aerosol profiles showed more […]
Tag Archives: Troposphere
Weather balloon data shows troposphere getting thicker, pushing tropopause higher over past 40 years
Phys.org November 8, 2021 Tropopause height (H) is a sensitive diagnostic for anthropogenic climate change. Previous studies showed increases in H over 1980–2000 but were inconsistent in projecting H trends after 2000. While H generally responds to temperature changes in the troposphere and stratosphere, the relative importance of these two contributions is uncertain. An international team of researchers (China, Canada, USA – NCAR, Boulder CO, Austria) used radiosonde balloon observations in the Northern Hemisphere (NH) over 20°N to 80°N to reveal a continuous rise of H over 1980–2020. Over 2001–2020, H increases at 50 to 60 m/decade, which is comparable […]