The marine effect on gulf region climate : the case of upwelling and the tropical easterly jet stream

Abstract EN

The main thesis of this research paper is that both upwelling process and Eastern Jet Stream are important climate factors in the study area: Any change in their behaviours leads to climate change.

Also, it is to say that a compound effect of both Up-welling and The Tropical Easterly Jet Stream (TEJ) is the main cause of aridity in the Gulf region and its vicinity.

Sea water upwelling is one of the most important of these two factors that affect rainfall in the coasts of the Arabian Sea.

Such a phenomenon brings all physical, chemical and biological changes to the sea water in the area.

Temperature change, that is a prominent modification caused by water upwelling, affects water evaporation.

The Tropical Easterly Jet Stream (TEJ) is also another main factor of aridity in the area.

In an other instance, the two phenomena work together to prevent both the Monsoon south easterly and the south westerly winds from accomplishing their function in causing rainfall in the region.

The humid Monsoon Winds have been diverted to be parallel to the coast carrying out no positive effect on rainfall in the area.

Subsequently, specification of climatic changes made by both Sea Water Upwelling, and the Tropical Easterly Jet Stream (TEJ) on the Gulf region and its vicinity is the main theme of this paper.

The crux of the research focuses on temperature and winds that govern both rainfall amount and variability.

It is important to detect the most prominent environmental changes made by these two phenomena, as two climatic factors, on the rainfall amounts in the study area.

Intensive fieldwork has been conducted to collect the necessary research primary data and supporting information.

Seawater and abutting air temperatures have been recorded through a year.

Consequent changes in seawater currents have been also observed and recorded.

At the same time, climatic data were collected from different sources.

The main intent of this exertion was to detect environmental changes brought by seawater Upwelling and the (TEJ).

The collected data have been statistically (and others) analyzed and presented in the present form of a scientific research paper.

For the sake of analyzing and discussing the research problem, the paper drives through different sub-themes: ● Physical consequences that pertain to temperature variability, and its effects.

● Climatic consequences that pertain to wind movements, humidity; and others.

● Consequent maritime changes and rainfall variability effects as an indicator of climatic change in the Study Area.

Some of the sound results that have been reached are that that both upwelling process and Eastern Jet Stream are important climate factors in the study area.

They, together engender the arid conditions of the area.