Results 251 to 260 of about 138,511 (294)
Some of the next articles are maybe not open access.
The Parameterization of Deep Convection
1997Insights into the parameterization of convection from two decades of diagnostic studies are reviewed. The life cycle of a convective mesosystem mass flux is described using day 245 from the GARP Atlantic Tropical Experiment as example. The thermodynamic differences between non-precipitating convection and precipitating convection are discussed, as well
openaire +1 more source
On deep convection in the Weddell Gyre
Deep Sea Research Part A. Oceanographic Research Papers, 1988In March 1983 a region (horizontal scale > 200 km) of convectively cooled and freshened Weddell Deep Water (γmax < 0°C) was observed central Weddell Sea. The extremely low salt and nutrient contents of the upper 1000 m of the cold spot suggest that its initial water column originated from the Antarctic Coastal Current.
openaire +1 more source
The Deep Convection Approximation
1990As has already been noted several times, atmospheric flows are low Mach number flows: M∞2 = U02/γRT∞(0) ≪ 1. Because of this, if we wish to “avoid” the constraint (8.19) imposed in the Boussinesq approximation, it becomes necessary to analyze flows with very low Froude numbers since [see (2.63) and (2.65)] $${\rm{Bo = }}\varepsilon \frac{{\gamma ...
openaire +1 more source
Deep Convection and the Solar Chromosphere
Solar Physics, 2012The manifestation of convection in deep layers of the Sun has been found in the dynamics of solar surface activity (Arkhypov, Antonov, and Khodachenko in Solar Phys.270, 1, 2011). Some chromospheric phenomena could be connected with deep convection, too. We justify this hypothesis with sunspot, Ca ii, Hα, and millimeter-wave radio data.
O. V. Arkhypov +2 more
openaire +1 more source
1994
Abstract Over some tropical regions and middle-latitude continents during the warmer part of the year, deep convective clouds dominate the thermodynamic structure of the atmosphere. Unlike trade cumuli, deep convection is associated with plentiful precipitation and, therefore, a net release of latent heat integrated through the depth of ...
openaire +1 more source
Abstract Over some tropical regions and middle-latitude continents during the warmer part of the year, deep convective clouds dominate the thermodynamic structure of the atmosphere. Unlike trade cumuli, deep convection is associated with plentiful precipitation and, therefore, a net release of latent heat integrated through the depth of ...
openaire +1 more source
Geophysics of Deep Convection and Deep Water Formation in Oceans
1991Abstract An important task for geophysicists studying deep convection and deep water formation in the ocean is to investigate various physical mechanisms generating vertical circulation. Two major types of such mechanisms are available so far, namely, thermodynamical instability, which generates convection and mixing due largely to surface buoyancy ...
openaire +2 more sources
Modeling Open-Ocean Deep Convection
1997Abstract : LONG-TERM GOALS. To understand the convective process in the ocean, develop numerical models to study it, and so improve the representation of convection in ocean circulation models. OBJECTIVES. To understand the relative importance of vertical mixing by convection and lateral advection by geostrophic eddies in setting the volume and ...
openaire +1 more source
Integral Effects of Deep Convection
Journal of Physical Oceanography, 1995Abstract The large-scale, integral effect of convective elements (plumes) constituting an open-ocean chimney is investigated both theoretically and with a plume-resolving numerical model. The authors consider an initially homogeneous “patch” of ocean of depth H, with Coriolis parameter f, in which buoyancy is lost from the surface at a rate B.
Uwe Send, John Marshall
openaire +1 more source
Sources of predictability for deep convection
2019The advent of convection-permitting ensemble prediction systems at most operational weather centers within the last 15 years constitutes a step-change in our ability to forecast convection. This is a fundamental task for weather services, as not only the general public demands good and reliable forecasts of convection, but they can also be accompanied ...
openaire +1 more source
Deep convection in the World Ocean
Reviews of Geophysics, 1983A brief discussion of, and a little speculation about, the relevance of the polar regions on climate is given. The main body of the paper gives a survey of the known deep convection areas of the world ocean. There are two distinct types of convection. The first is the classic sinking occurring on continental shelf slope systems, as typified by various ...
openaire +1 more source