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Cirrus cloud12/26/2023 ![]() Impact of small ice crystal assumptions on ice sedimentation rates in cirrus clouds and GCM simulations. L., Rasch, P., Ivanova, D., McFarquhar, G. A new ice nucleation active site parameterization for desert dust and soot. A microphysics guide to cirrus-part 2: climatologies of clouds and humidity from observations. Dust ice nuclei effects on cirrus clouds. Kuebbeler, M., Lohmann, U., Hendricks, J. Global simulations of ice nucleation and ice supersaturation with an improved cloud scheme in the Community Atmosphere Model. Multi-decadal aerosol variations from 1980 to 2009: a perspective from observations and a global model. Global and regional importance of the direct dust-climate feedback. Anthropocene changes in desert area: sensitivity to climate model predictions. Modeling the aerosol chemical composition of the tropopause over the Tibetan Plateau during the Asian summer monsoon. Tibetan Plateau impacts on global dust transport in the upper troposphere. Characterizing the transport pathways of Asian dust. The potential influence of Asian and African mineral dust on ice, mixed-phase and liquid water clouds. Atmospheric ice-nucleating particles in the dusty tropical Atlantic. Coarse-mode mineral dust size distributions, composition and optical properties from AER-D aircraft measurements over the tropical eastern Atlantic. The Saharan aerosol long-range transport and aerosol–cloud-interaction experiment: overview and selected highlights. Particle chemical properties in the vertical column based on aircraft observations in the vicinity of Cape Verde Islands. Regional variability of the composition of mineral dust from western Africa: results from the AMMA SOP0/DABEX and DODO field campaigns. Widespread biomass burning smoke throughout the remote troposphere. Efficient in-cloud removal of aerosols by deep convection. Online simulations of global aerosol distributions in the NASA GEOS-4 model and comparisons to satellite and ground-based aerosol optical depth. ![]() Evaluations of tropospheric aerosol properties simulated by the Community Earth System Model with a sectional aerosol microphysics scheme. A new method to quantify mineral dust and other aerosol species from aircraft platforms using single-particle mass spectrometry. The global 3-D distribution of tropospheric aerosols as characterized by CALIOP. A critical examination of spatial biases between MODIS and MISR aerosol products-application for potential AERONET deployment. Satellite Ocean Aerosol Retrieval (SOAR) algorithm extension to S‐NPP VIIRS as part of the ‘Deep Blue’ aerosol project. Constraints on aerosol processes in climate models from vertically-resolved aircraft observations of black carbon. Microphysics of Clouds and Precipitation (Springer, 2010). ![]() Evaluation of the aerosol vertical distribution in global aerosol models through comparison against CALIOP measurements: AeroCom phase II results. Quantification of trans-Atlantic dust transport from seven-year (2007–2013) record of CALIPSO lidar measurements. Constraining the magnitude of the global dust cycle by minimizing the difference between a model and observations. Smaller desert dust cooling effect estimated from analysis of dust size and abundance. Global dust model intercomparison in AeroCom phase I. Measurements of Saharan dust in convective clouds over the tropical eastern Atlantic Ocean. Clarifying the dominant sources and mechanisms of cirrus cloud formation. in Climate Change 2013: The Physical Science Basis (eds Stocker, T. Our findings establish the critical role of dust in Earth’s climate system through the formation of cirrus clouds.īoucher, O. We find that the meteorological environment downstream of each emission region modulates dust atmospheric lifetime and transport efficiency to the upper troposphere so that source contributions are disproportionate to emissions. Using a global transport model with improved dust treatment, we also explore which of Earth’s deserts are the largest contributors of dust aerosol to cirrus-forming regions. We show that dust aerosol initiates cirrus clouds throughout the extra-tropics in all seasons and dominates cirrus formation in the Northern Hemisphere (75–93% of clouds seasonally). Here we present global-scale measurements of dust aerosol abundance in the upper troposphere and incorporate these into a detailed cirrus-formation model. However, the atmospheric abundance of dust is unconstrained in cirrus-forming regions, hampering our ability to predict these radiatively important clouds. Airborne mineral dust particles can act as natural seeds for cirrus clouds in the upper troposphere.
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