Questions tagged [atlantic]

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8
votes
1answer
155 views

Why are tropical cyclones forming earlier in the North Atlantic basin?

This tweet from Brian McNoldy includes a graph suggesting that tropical cyclones are typically getting named earlier in the year in the Atlantic: What are the causes for this?
11
votes
2answers
5k views

Is the Mid-Atlantic Ridge a ridge or a trench?

I am confused after reading conflicting text from different sources. For example, I read that divergent oceanic plates form ridges. National Geographic calls Mid-Atlantic Ridge a valley! On the other ...
7
votes
2answers
244 views

What mechanism is used to measure ocean currents from cables?

The volume transport of the Florida Current (one of the parts of the Gulf Stream) is measured using an underwater cable. What are the processes that allow for these measurements? How can we obtain ...
5
votes
1answer
421 views

Guinea Current existence in the Atlantic

Why does the Guinea Current exist at all? There are no similar currents in the Pacific or Indian Oceans and the Guinea Current also disappear during northern summers. Why?
7
votes
2answers
731 views

What is that drain east of newfoundland

On Google Maps I just found a drain east of Newfoundland: More details at https://www.scribblemaps.com/maps/view/What_is_that/Jafix1 I wonder what that could be? I heard about issues from different ...
1
vote
1answer
156 views

Why is the Atlantic anticyclone an area of high pressure if it's the warmest spot on the planet?

I am taking a navigational course and part of it is about meteorology. There is one thing which is, although obvious, quite hard for me to grasp. Looking at a global weather map like this: https://...
12
votes
3answers
253 views

How is it possible that a Hurricane such as Alex forms in the Atlantic in winter?

Hurricane Alex (developed from an area of low pressure which began in the Atlantic near Bahamas in January 2016, and developed subtropical and later tropical storm characteristics to the south of the ...
12
votes
2answers
2k views

Can an Atlantic hurricane enter Mediterranean sea?

I can't find any examples, has it just never happened before or is it impossible because of environmental factors?
14
votes
1answer
2k views

About meddies: what are they? How do they form? How are they maintained?

A "meddy" is usually described as a Mediterranean Water eddy. While many meddies have been observed in recent years, I would want to know what are the common characteristics of such features (...
27
votes
2answers
32k views

Why are there no hurricanes in the southern Atlantic basin?

We see tropical cyclones (going by different names e.g. hurricane, typhoon, cyclone) all over the tropics, but it seems that there are never any storms in the southern Atlantic. See this map of ...
6
votes
1answer
97 views

How does the meridional overturning circulation affect sedimentation rates in the North Atlantic?

There's a lot of downwelling in the region. Does this increase sedimentation rates?