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Lagrangian Coherent Structures and Vortex Formation in High Spatiotemporal‐Resolution Satellite Winds of an Atmospheric Kármán Vortex Street
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- Journal of Geophysical Research: Atmospheres
, 2021-10-06)
Recent advances in geostationary imaging have enabled the derivation of high spatiotemporal‐resolution cloud‐motion winds for the study of mesoscale unsteady flows. Due to the general absence of ground truth, the quality ...
Impact of a large artificial lake on regional climate: A typical meteorological year Meso‐NH simulation results
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- International Journal of Climatology
, 2021-07-29)
Large artificial lakes and reservoirs affect the meteorological regime of the shore area and the local climate takes on a number of new features that were previously absent. This work focuses on the weather impact of the ...
Anomalous Reconnection Layer at Earth's Dayside Magnetopause
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- Journal of Geophysical Research: Space Physics
, 2021-09-24)
Observations by the Magnetospheric Multiscale spacecraft (MMS) of an unusual layer, located between the dayside magnetosheath and the magnetosphere, alternating with encounters with the magnetosheath during an extended ...
Observed and Simulated Variability of Droplet Spectral Dispersion in Convective Clouds Over the Amazon
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- Journal of Geophysical Research: Atmospheres
, 2021-10-15)
In this study, the variability of the spectral dispersion of droplet size distributions (DSDs) in convective clouds is investigated. Analyses are based on aircraft measurements of growing cumuli near the Amazon basin, and ...
Guidelines for Studying Diverse Types of Compound Weather and Climate Events
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- Earth's Future
, 2021-11-10)
Compound weather and climate events are combinations of climate drivers and/or hazards that contribute to societal or environmental risk. Studying compound events often requires a multidisciplinary approach combining domain ...
Improving Atmospheric Angular Momentum Forecasts by Machine Learning
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- Earth and Space Science
, 2021-12-20)
Earth angular momentum forecasts are naturally accompanied by forecast errors that typically grow with increasing forecast length. In contrast to this behavior, we have detected large quasi‐periodic deviations between ...
Changes in the Tropical Lapse Rate due to Entrainment and Their Impact on Climate Sensitivity
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- Geophysical Research Letters
, 2021-09-16)
The tropical temperature in the free troposphere deviates from a theoretical moist‐adiabat. The overall deviations are attributed to the entrainment of dry surrounding air. The deviations gradually approach zero in the ...
Targeted covariance inflation for 3D‐volume radar reflectivity assimilation with the LETKF
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- Quarterly Journal of the Royal Meteorological Society
, 2021-09-30)
The local ensemble transform Kalman filter (LETKF) suggested by Hunt et al., 2007 is a very popular method for ensemble data assimilation. It is the operational method for convective‐scale data assimilation at Deutscher ...
Absorbing aerosol decreases cloud cover in cloud‐resolving simulations over Germany
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- Quarterly Journal of the Royal Meteorological Society
, 2021-10-07)
Aerosol can affect clouds in various ways. Beside the microphysical impact of aerosol particles on cloud formation, the interference of aerosol with atmospheric radiation leads to changes in local heating, surface fluxes ...
A Comparison of Radial Diffusion Coefficients in 1‐D and 3‐D Long‐Term Radiation Belt Simulations
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- Journal of Geophysical Research: Space Physics
, 2021-08-13)
Radial diffusion is one of the dominant physical mechanisms driving acceleration and loss of radiation belt electrons. A number of parameterizations for radial diffusion coefficients have been developed, each differing in ...