cold advection


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cold advection

The process of advection (transfer of heat by horizontal motion) when cold air mass replaces a warm air mass.
References in periodicals archive ?
This HWs number growth is related to the HI strengthening due to the conjunction of SLP decrease, warm-weaker cold advection, and sinking air intensification.
Furthermore, sinking dry air intensification together with warm advection strengthening and weaker cold advection tendency can increase the regional atmospheric warming.
The near-surface temperature was near or below freezing and decreasing because of diabatic cooling and cold advection over much of the northeast United States, ensuring that most precipitation would be frozen.
9), indicating a reduction of liquid water and a change to dry snow as the dominant precipitation type, consistent with cold advection in the lowest 200 hPa as the cyclone moved northeastward (Fig.
A vertical belt of isothermal advection formed at the interface of the cold and warm air mass over the key area of the rainstorm, with strong cold advection above the region between 29[degrees]N and 31[degrees]N and warm advection to the northern and southern sides of this region.
However, the spatial pattern of the temperature indicated a cold center to the northwest of the rain area (near X1 and X2), suggesting that a strong cold advection to the rear of the rain area at upper levels corresponded to a warm center and warm advection at lower levels.
On 18 March, as the intensified trough moves away from the eastern coast of China, the 500 hPa trough lags the trough in the lower troposphere and the resulting strong cold advection behind the trough favors the intensification of the trough (Figures 6(e) and 6(f)), resulting in the deepening and intensification of the trough.
These data made it possible to obtain profiles that showed "the existence of low-level jet streams at night time, which were especially low in summer, when they were located at a maximum height of between 200 and 300 metres," said the researcher.The physicists also analysed the thermal structure of the lower atmosphere, and found "significant daytime cold advections (horizontal transportation of heat by an air current) in springtime, with temperature differences of 4.5?C between the highest and lowest wind speeds," added PE[umlaut]rez.