Results 31 to 40 of about 959 (180)

The evaluation of boundary‐layer turbulence in high‐resolution numerical weather prediction simulations using Doppler lidar

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A new method compares both kilometer and sub‐kilometre weather model simulations with Doppler lidar observations to assess the representation of boundary‐layer turbulence. While bulk boundary‐layer properties are well represented, vertical velocity variance is strongly underestimated in both simulations.
Natalie J. Harvey, Helen F. Dacre, Kirsty E. Hanley, Humphrey W. Lean, Christopher J. Walden, Michael Baidu, Steven Boeing, Andrew N. Ross   +7 more
wiley   +1 more source

Unified Parameterization of Convective Boundary Layer Transport and Clouds With the Thermal Plume Model

Journal of Advances in Modeling Earth Systems, 2019
The representation of stratocumulus clouds, and of the stratocumulus to cumulus transitions which are ubiquitous features of marine boundary layer clouds, remains a challenge for climate models.
Frédéric Hourdin, Arnaud Jam, Catherine Rio, Fleur Couvreux, Irina Sandu, Marie‐Pierre Lefebvre, Florent Brient, Abderrahmane Idelkadi   +7 more
doaj   +1 more source

Using microwave imager observations to improve the ocean temperature in a coupled NWP system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A recent upgrade to the ECMWF IFS has implemented outer‐loop coupling between the atmosphere and the ocean. This work uses this method to pass ocean skin temperature estimates derived from satellite‐borne microwave imagers to the ocean data assimilation system; the updated ocean state is then passed back to the atmospheric system.
Tracy Scanlon, Alan J. Geer, Philip Browne, Patricia de Rosnay, Niels Bormann   +4 more
wiley   +1 more source

Diverse Cloud Regimes in the Northeast Pacific: Evaluating a Mesoscale NWP Model With Shipborne Observations

Meteorological Applications
As marine clouds play an important role in Earth's radiation budget, it is important that global climate and numerical weather prediction (NWP) models accurately simulate them. These clouds are challenging to represent within models due to the incomplete
Julia M. Simonson, Wayne M. Angevine, Joseph B. Olson, David D. Turner   +3 more
doaj   +1 more source

Surface‐Atmosphere Decoupling Prolongs Cloud Lifetime Under Warm Advection Due To Reduced Entrainment Drying

Geophysical Research Letters, 2023
An initially well‐mixed stratocumulus deck can remain overcast for several tens of hours under warm‐advection conditions, although moisture supply is cut off from the ocean due to surface‐atmosphere decoupling (stabilization of the surface‐atmosphere ...
Haipeng Zhang, Youtong Zheng, Seoung Soo Lee, Zhanqing Li   +3 more
doaj   +1 more source

How weather got its words: a history of meteorological English – Part 2: the scientific age and beyond

Weather, EarlyView.
The English language is a gargantuan, gluttonous beast. It has become extraordinary in its powers of assimilation – such that we rarely consider the origins of the words we use. In this paper, we will shed light on these origins, including the Pontic–Caspian steppe, the British Empire and, of course, a TV show.
Kieran M. R. Hunt
wiley   +1 more source

Stratocumulus Clouds

Monthly Weather Review, 2012
Abstract This paper reviews the current knowledge of the climatological, structural, and organizational aspects of stratocumulus clouds and the physical processes controlling them. More of Earth’s surface is covered by stratocumulus clouds than by any other cloud type making them extremely important for Earth’s energy balance, primarily ...
openaire   +1 more source

Comparison of a global-climate model to a cloud-system resolving model for the long-term response of thin stratocumulus clouds to preindustrial and present-day aerosol conditions [PDF]

Atmospheric Chemistry and Physics, 2010
The response of a case of thin, warm marine-boundary-layer (MBL) clouds to preindustrial (PI) and present-day (PD) conditions is simulated by a cloud-system resolving model (CSRM).
S. S. Lee, J. E. Penner
doaj   +1 more source

Measurement and modeling of diffuse ultraviolet radiation: A review

Photochemistry and Photobiology, EarlyView.
Solar UV radiation consists of direct and diffuse UV components. The diffuse component contributes to the exposure received by humans and to the risk of skin cancer and sun‐related eye disorders. This review aims to determine future research directions for the measurement and modeling of diffuse solar UV radiation.
Alfio V. Parisi, Joanna Turner, Abdurazaq Amar, Damien P. Igoe, Peter Schouten, Nawin Raj, Nathan Downs, Harry Butler   +7 more
wiley   +1 more source

Significance of Size‐Dependent Hygroscopicity Parameterization for Aerosol‐Cloud Interactions

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Aerosol‐cloud interactions (aerosol indirect effects) are the most significant source of uncertainties in the effective radiative forcing (ERF) due to aerosols which can act as cloud condensation nuclei (CCN). Uncertainties in the indirect effect can result from systematic uncertainties in aerosol water uptake (hygroscopicity).
Kanishk Gohil, Andrew Gettelman, Akua Asa‐Awuku   +2 more
wiley   +1 more source