What is the difference between harmattan and el nino

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Economics 23 cards. What is a sporophyte. What are examples of Prokaryotes. Explain why elasticity of demand is such an important concept to marketers who sell a commodity product. What is differences between side effect and adverse effect. Q: What are the difference between Harmattan and El Nino? Write your answer Related questions. What is the difference between el nino and water rising?

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What climate changes do el nino and la nino demonstrate? Where does el nino affect? What has el nino been blamed for? Wis a similarities between El nino and La nina? What is the speed of onset for El Nino? How El Nino measured and tracked? Although the central role of mountains was a crucial finding, it raised new questions: what factors impact Harmattan wind speeds and patterns?

To tackle this new challenge, researchers are focusing their attention on other aspects, such as the meteorological phenomenon known as the Saharan heat low SHL , a low-pressure area caused by high temperatures which slows down the Harmattan, thus lowering the amount of dust aerosol it carries into the atmosphere. Intensification of the SHL in recent years would help explain the low-emission period that has prevailed since the s.

Researchers are also attempting to gauge the impact of water vapor in the atmosphere—most likely coming from the Mediterranean sea—which tends to increase temperature, thereby intensifying the SHL and further slowing down the Harmattan, thereby reducing dust emissions. A density current made visible by the soil particles it lifts as it progresses in Hombori Mali. This phenomenon, which is of a convective nature, is known as a haboob. The researchers have also provided future estimates for the 21st century, suggesting that the dust load from the Sahara will continue to decrease over the next years.

For instance, as global temperatures rise with increased greenhouse gases, tropical air circulation will drop, with less dust being transported as a result. This may have a beneficial effect for the region—better air quality and potentially more rainfall—but as atmospheric dust is reduced, so is its direct and indirect radiative effect, 4 leading to higher sea surface temperatures over the Atlantic.

These higher temperatures can potentially cause more frequent and intense hurricane activity, whose devastating effects we only know too well. Arby Gharibian is a writer, translator, and independent researcher in social sciences, art, and literature. Sign in. Articles Infographics Opinions Slideshows Videos.

What is the CNRS? Search Sign in Register My account Newsletters. Customize your navigation Select your favorite keywords or themes and create your custom section. Log in Register. Image taken from the International Space Station over Libya showing a dust storm stretching several hundred kilometers across the Sahara.

Isolated cumulonimbus clouds are developing within the dust layer. Share Share. New findings by a French-US team shed light on the underlying mechanisms that carried this dust in the past, and how these may change in the coming decades. Dust levels have undergone significant multi-decade fluctuations.

One of our goals was to determine why the Harmattan had such a prominent role, and we quickly focused on its route. Footnotes 1.