Sentences with phrase «deep convection»
"Deep convection" refers to the upward movement of air in the atmosphere that carries heat and moisture from the surface up into the higher levels. It often leads to the formation of strong storms or thunderstorms. Full definition
At a minimum, one would need to argue for a distinction between tropical mean trends and trends in the regions of deep convection.
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The sea surface height map is consistent with active deep convection in the winters of 2015 and 2016.
It is one of the few regions in the world where deep convection occurs.
It would be nice there were more timely reporting of deep convection measurements.
In Figure 4, lightning accompanies some areas of deep convection, indicating that the storm might persist.
Hydrogen escape from Mars enhanced by deep convection in dust storms.
Warm SSTs in this region, and the enhanced deep convection, have been connected to a standing - wave pattern in the atmosphere from the tropics to higher latitudes in a manner similar to that associated with ENSO, but with roots farther west.
Improvements in the simulation of the intensity of precipitation and tropical cyclones with increases in the resolution of AGCMs (Oouchi et al., 2006) suggest that when climate models have sufficient resolution to explicitly resolve at least the large convective systems without using parametrizations for deep convection, it is likely that simulation of precipitation and intensity of tropical cyclones will improve.
However, tropical deep convection in a natural state is poorly understood and modeled, with insufficient observational data sets for model constraint.
Firstly, we know that there is a great deal of decadal variability in how much and where deep convection takes place.
High - level cloud cover in the tropics with significant optical thickness is predominantly associated with deep convection, and clouds of this nature play the second most important role in accounting for model differences (Webb et al. 2006).
Methods: This research describes a novel mathematical technique to assess the comparative roles of key environmental variables and the distribution of moisture and winds inside of clouds that trigger deep convection in the tropics.
However, over longer terms, deep - water oxygenation may also increase even if Atlantic meridional overturning circulation becomes weaker, as deep convection in the Weddell Sea and Antarctic Bottom Water becomes enhanced (Yamamoto et al., 2015).
Southern Ocean deep convection as a driver of Antarctic warming events, Geophysical Research Letters, 43, p. 2192 - 2199.
In the tropical African and neighboring Atlantic region there is a strong contrast in the properties of deep convection between land and ocean.
It seems that the El Niño - related warmer sea surface temperatures in the eastern equatorial Pacific in late winter cause deep convection patterns to shift eastward.
The idea is that Arctic sea ice decline would expose the ocean to anomalous surface heat and freshwater fluxes, resulting in positive buoyancy anomalies that can propagate downstream to the North Atlantic, in due time suppressing deep convection and weakening the AMOC.
Without winds or a high vertical diffusivity, the ocean does not support deep convection.
Lead researcher Dr. Samson Hagos and Dr. L. Ruby Leung, atmospheric scientists at PNNL, used a high - resolution model, data from the Atmospheric Radiation Measurement (ARM) Climate Research Facility, NASA - TRMM satellite rainfall measurements, and the NOAA GFS - FNL analysis to develop an analytical method to represent four environmental conditions that trigger deep convection clouds.
In that case, persistent deep convection did not occur in the central Pacific, and the usual strong interaction between the atmosphere and the ocean there failed to play its normal role in anchoring the convection and heat transfer.
«GoAmazon2014 / 5 campaign points to deep - inflow approach to deep convection across scales.»
Although the polynya has aroused continued interest1, 2,3,4,5,6,7,8,9, the presence of a fresh surface layer has prevented the recurrence of deep convection there since 19768, and it is now largely viewed as a naturally rare event10.
«This has to do with water vapor, which is the fuel for explosive deep convection in the atmosphere.
Deep convection moves away from the Western Pacific Warm Pool, and other bits of the climate system tend to shift to unusual states.
The researchers plan to incorporate information from the cloud - resolving model simulations that have been evaluated against observations in this study into climate model parameterizations of deep convection using probability distribution functions of environmental factors.
The stability of the marine layer prevents deep convection, and thus stratiform clouds are formed.
It is important not to confuse the Walker Circulation with the Hadley Circulation (also known as the «Hadley Cell»), which also involves deep convection in the tropics.
Located along the Andes Mountains, it is the largest lake in South America and is situated in such a way that mountain breezes tangle with warm lake air to create a perfect storm, so to speak, of storms — an enduring deep convection that results in 297 thunderstorms a year.
Yan, 2014: Lateral heat exchange after deep convection in the Labrador Sea in 2008.
The Sierras de Córdoba has a high frequency of orographic boundary layer clouds, many reaching congestus depths, many initiating into deep convection, and some organizing into mesoscale systems uniquely observable from a single fixed site.
Atmospheric convection and coupled tropical circulation Precipitating deep convection is central to many aspects of the tropical climate and its probable response to increased greenhouse gas concentrations.
«How do environmental conditions influence vertical buoyancy structure and shallow - to - deep convection transition across different climate regimes?»
Surface air that has been rapidly transported upwards through deep convection becomes trapped within the strong anticyclonic circulation.
Here, we present a new analysis of historical observations and model simulations that suggest deep convection in the Weddell Sea was more active in the past, and has been weakened by anthropogenic forcing.
Liao, X., and D. Rind, 1997: Local upper tropospheric / lower stratospheric clear - sky water vapor and tropospheric deep convection.