This discrepancy is explained by the fact that a positive NAO index drives augmented westerly winds across the North Atlantic during winter, causing relatively warm and moist maritime air to move over Europe. Meanwhile, stronger northerly winds over the northwest Atlantic, carry cold air southward over Greenland and north eastern Canada, decreasing land and sea surface temperatures.
The pressure gradient causes objects to move outwards while the Coriolis force causes objects to move left or right depending on the northern or southern hemisphere. As an effect of these forces acting against each other, winds of high pressure and low pressure often diverge or converge with one another causing the imbalance in heat transfer. 3a. Cyclonic activity occurs 5-30 degrees away from the equator in the ITCZ and between the northern and southern Hadley cells. Cyclonic activity is also located between the subtropic high.
4. Places downwind of a large body of water generally have milder seasons than places farther inland at the same latitude.
Atmospheric circulation is actually caused by the unbalanced heating of the earth 's surface by the sun and changes with temperature and precipitation. In addition, it 's affected by the rotation of the earth on its axis, since year after year the earth undergoes seasonal phases of the weather, for instance, the rotation will either be towards or away from the sun. Unlike most seasons, summer is when the ozone levels are high because the ultraviolet
It is not only the weather that the air masses bring that affects the climate of the UK, but also, the complex interactions between the air masses. Most importantly, the interactions between the Polar Maritime and Tropical maritime air masses can lead to the formation of areas of significantly low pressure called depressions. These depressions usually form in the Atlantic Ocean at the boundary between PM and TM air, and bring characteristic cloudy, wet and windy conditions. These depressions are what are responsible for many of the winter storms. They are regular occurrences and so contribute to the overall pattern of weather over a long period i.e. the climate of the British Isles. The interaction between continental air masses often leads to anticyclones which are the opposite of depressions – areas of significantly high pressure. They bring settled weather, with clear skies and light winds. In the summer they can be responsible for temperatures of over 30⁰C. Many say it is the pattern of depressions and anticyclones passing over Britain that is responsible for its
These air masses also have massive differences depending on their region in North America. For reference, the northernmost part of North America is known as the arctic region because it has year-round low temperature and pressure, and has fairly low precipitation other than snow, and this is referred to as an Arctic air mass. When you decrease in latitude towards the equator the next type of air mass you would encounter is not quite as cold as an Arctic air mass but it does have higher precipitation, and it is known as a Polar air mass. These air masses typically form over Canada and the Northern United States. The warmest of the main three air masses is the Tropical air mass which form in the southernmost parts of North America and typically over the ocean, these types of air masses that form over water are known as maritime air masses are typically the most wet and contain much more precipitation than air masses that form over the land. Air masses that form over a body of land are known as continental air masses and are usually dry with little moisture but, can be transformed into a maritime air mass if it happens to travel over an ocean or large body of water long enough because it will collect moisture from said water source. Maritime air masses are also affected by the temperature of the water that they formed over, because of the rate of evaporation that occurs at 14 degrees centigrade is much different than the amount of evaporation that takes place at 25 degrees centigrade. Therefore during the warmer months like June, July, and August, moist maritime air masses form more frequently because the water is obviously warmer. For comparison the average sea surface temperature during the winter months of December, January, and February is about 10 degrees centigrade whereas the average sea surface temperature during the summer month that were previously
Easterly Trade Winds over the equatorial Pacific Ocean are partially to blame for both occurrences. For La Niña, the Easterly Trade Winds substantiate her atmospheric conditions. The Winds blow added warm water west, which causes very cold water below the ocean's surface to rise upward toward the surface replacing the warm water, and this occurs near the South American coast. During an El Niño, the opposite occurs. The Easterly Trade Winds become weaker causing a lessened, to no impact, at all. The Winds can even reverse direction. The warm Pacific Ocean becomes nearly stationary or flows eastward and as it does, it gains heat because there is little or no circulation of air. Not only does El Niño affect weather, it is also responsible for
Temperature contrast between the equator and the Arctic region is greatest in the winter. Temperatures near or at the equator only change a few degrees between winter and summer while the Arctic region changes drastically up to 40 degrees between the seasons.
In recent months, scientists have been taking notice to record cool temperatures observed in the North Atlantic Ocean, while the rest of the world is experiencing record warmth. They believe this cooling of the water to be due to the accelerated melting of the Greenland ice
and summer. (Mowat 1965) Fortunately for the Vikings, shifting patterns in ocean thermohaline circulation during the Medieval Warm Period increased surface temperatures by 1.5 °C in the North Atlantic. (Sharpe 1991) The resulting reduction in drift ice and stormy weather by 800 CE ultimately facilitated fast and reliable passage across the North Sea. Clearer weather conditions and better visibility also improved navigation by sight that Scandinavian seafarers relied upon for judging the speed, direction, and location of their ships in relation to distant landmasses when calculating their projected course. (Mowat 1965) Furthermore, the weakened polar vortex altered prevailing winds so that spring easterlies and autumnal westerlies perfectly
For many years now, scientists have believed that our climate is changing. This climate change has caused water currents up north, near Antarctica to shift leading to warm waters taking the place of the usual cold arctic waters. Warm water melts the glaciers and causes the top of the glaciers to float off into the sea, allowing the warm water to melt even more glaciers. The extra glacier melting into our sea has caused the sea levels to raise and the
El Niño refers to the wide ranging ocean-atmosphere climate interchange linked to a cyclical warming in ocean surface temperatures across the central and east-central Equatorial Pacific. Distinctive El Niño effects will potentially manifest over North America during the approaching winter season. They involve warmer-than-average temperatures over western and central Canada, and over the western and northern United States. Wetter-than-average conditions are probable over parts of the U.S. Gulf Coast and Florida, and drier-than-average conditions can be expected in the Ohio Valley and the Pacific Northwest. The presence of El Niño can significantly influence weather patterns, ocean conditions, and marine fisheries across large portions of the
The Netherlands has a temperate maritime climate due to a long coast with the Atlantic Ocean.1 The Atlantic Ocean influences the climate by giving the Netherlands cool summers along with moderate winters; much milder when compared to Ontario’s continental climate.2 The daytime temperatures range from 2°C-6°C in the winter and 17°C-20°C in the summer.3 The Netherlands also experiences wet weather year-round with little snowfall during the winter. Rain is predominant during the winter and fall and less frequent during spring and summer.4 Extreme cold is a rare occurrence
Despite having some of the hottest weather we have ever had on Earth, one place in particular is having the coldest weather on Earth. Scientist are calling it the Atlantic Blob. The Atlantic Blob is a large area in the North Atlantic which is some locations is record cold. Over the past few years there has been a cooling of the Atlantic and a warming of the Pacific. There is also a Pacific blob which is a spot which gets really warm and has an above average season for hurricanes and typhoons. The Atlantic Blob is found by Greenland which is basically a big sheet of ice. 99% of Earth’s freshwater is found in Greenland and Antarctica and scientists believe this melting ice is causing this dip in temperatures. The ice melting in Greenland is affecting
Summary: The film Nada Más was set in Havana Cuba in 2001. It centers around a Cuban woman named Carla Pérez who works at the post office. At the beginning of the film, Carla accidently spills coffee on one of the letters she is supposed to stamp. In an attempt to salvage the letter so she won’t be punished, Carla starts to rewrite it in the sender’s handwriting. The way she rewrites the letter, though, is not the original words or message that the sender intended. Carla embellishes the letter and makes it beautiful, dramatic, and loving. This specific letter was written from a student who was in love with her professor and Carla’s rewrite brings them together. She is enthralled with other people’s lives because her own is so uneventful. Carla then begins to steal more letters from the post office, read them, then rewrite them in an attempt to help people. Subsequently, she sneaks them back into the post office and sends them to the original recipient. Carla receives letters of her own from her mother in Miami. She is trying to get Carla on the list to get a visa, but the lottery is very hard to win because so many people want to leave Cuba. Her mom calls her from Miami to talk about how Carla is and that her mom has hope that she will receive the visa, unlike Carla. After the phone call, Carla goes to work and asks the mail carrier, Cesar, if he ever wonders what the letters say, and to her disappointment he claims that he’s not interested. Immediately following questioning
The Arctic Ocean is of little depth. It is the smallest ocean compared to the world's 5 major oceans. Although, we consider it as an ocean, some oceanographers would simply state it as a sea. Since The Arctic Ocean is small and shallow you would understand why some would recognize it more as a sea instead of an ocean. Its is obviously cold, freezing if you would prefer to describe it that way. It is moderately covered by sea ice throughout the year. In winter it is almost completely filled with sea ice. Did you know the Arctic ocean surrounds the North Pole.