Results 261 to 270 of about 22,447 (300)

On deep convection in the Weddell Gyre

Deep Sea Research Part A. Oceanographic Research Papers, 1988
In 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

1990
As 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

Restratification after Deep Convection

Journal of Physical Oceanography, 1997
Abstract An important, yet poorly understood, aspect of the water mass transformation process in the ocean is the manner in which the convected fluid, once formed, is accommodated and drawn into the general circulation. Following “violent mixing” in the open ocean that creates a deep homogenous body of fluid, restratification of the surface (∼500 m ...
Helen Jones, John Marshall
openaire   +1 more source

Deep Convective Regimes

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

Modeling Open-Ocean Deep Convection

1997
Abstract : 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, 1995
Abstract 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

Chapter 5.5 Deep convection

2001
Publisher Summary This chapter reviews deep convection with emphasis on advances made during the World Ocean Circulation Experiment (WOCE) observing period. It describes some features of plumes, the convective mixing agents. The chapter also discusses two phenomena's associated with the convection.
John Lazier, Robert Pickart, Peter Rhines   +2 more
openaire   +1 more source

Sources of predictability for deep convection

2019
The 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, 1983
A 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

On the Thermodynamic Equation for Deep Convection

Monthly Weather Review, 1977
Abstract A review is given of six equations that are used to approximate reversible saturated parcel ascent. These approximations are compared with the aid of several examples and their appropriateness for use in modeling deep clouds discussed.
openaire   +1 more source