Monday, September 1, 2008

Weather & Climate - 9/1/08

What are some reasons that the humid-continental climate is not found in the Southern Hemisphere? (Use your Chapter 3 reading & the map of The World's Climate Regions on page 28 & 29 in your textbook to guide your answer).

46 comments:

Priya Vij, per 1 said...

Ms Kiser-I read the paragraph about the humid-continental climate like 20 times and i can't seem to find the answer to this blog question. Im really confused. -Priya

Andy Waldo, p.1 said...

I couldn't find it in the book either so I looked it up on the internet. According to the Online encyclopedia of Britannica landmasses are absent at the significant latitudes (30°-60°S)in the Southern Hemisphere. This area in the Northern Hemisphere(30°-60°N) has a lot of land mass. Thats why the humid continental climate is only found in the northern Hemisphere and not the Southern Hemisphere.

Brandon Pd 1 said...

I believe the question for this week stated that pages 28 and pages 29 should guide your answer.

There are many distinct reasons why the humid continental climate is not found in the southern hemisphere of Earth. The first reason for such a climate is the major world ocean currents. As we can observe cool currents drop from the northern polar ice cap. Likewise warm tropical currents rise from areas near or close by the equator. These currents collide near the uppermost regions in the northern hemisphere. When these two currents combine, the tropical air rises and then forms precipitation in varying amounts.

Another reason is the distance between the region and oceans and other bodies of water. The humid continental climate occurs in interiors of most continents, because the ocean can affect temperature. If the region is close to a body of water like an ocean the temperature rises. If a region is further from a body of water the temperature drops. A good example is the temperature of New York City during the winter. New York City, which is close to an ocean, has an average winter temperature of 29F. In Detroit, which is farther away from the ocean, then New York City can reach temperatures as low as –22F.

As you can probably see already air flow and ocean currents relate to many of the characteristics and weather patterns an area may have.

Priya Vij, per 1 said...

After much further research on the internet, I concluded that the humid continental climate is not found in the Southern hemisphere because of the air flow and the ocean currents.I also found that this climate is "known for its variable weather patterns due to its location in the mid-latitudes and year round influence of the polar front." So infering from this piece of information one could say that this climate isn't found in the SOuthern hemisphere because the polar front isn't close enough to the Southern hemisphere to really be able to affect it. The human continental climate receives a lor of precipitation because the polar and tropical type air masses collide with each other causing rain. One could also rephrase this sentence and say that the Humid Continental Climate ISNT found in the Southern hemisphere because these two different air masses don't collide. There are many other reasons and it is important to realize that these are just two of them.

Anonymous said...

I think the reason humid continental climate is not found in the southern hemisphere is because of ocean currents and wind patterns. Furthermore humid continental climates are usually found in the interiors of continents, and the southern hemisphere does not have enough land mass for this type of climate. There are more warm currents than cold in the northern hemisphere so perhaps humid continental needs some specific weather system caused by warm and cold currents colliding to form.

Anonymous said...

Responding to what Priya said, I overlooked the distance of the poles and airflow. The distance of the south pole to the continents is much larger than the distance of the north pole to the nearest continent so cold air moving from the south pole would have longer to go to actually hit a continent. Warm air doesn't usually go to the south pole so the cold air would not be able to collide with warm air, creating the weather systems needed to support a continental climate.

Rick Per. 1 said...

I think that the reason that the humid-continental climate is not found in the Southern Hemisphere is that that it is much hotter down there because the Earth's bottom half is tilted towords the sun, making it much less humid.

Priya Vij, per 1 said...

Responding to Frank. I really appreciate how well thought out your opinion is. It makes lots of logical sense. I also think that the human continental climate doesn't exist in the SOuthern hemisphere is because the Southern hemisphere doesn't have the characteristics to support a climate that involves so many extremes-such as a lot hot and cold air. It also makes sense that since the Poles are so much farther away from the Southern hemisphere than the Northern hemisphere. that would complicate the cold wind reaching the Southern hemisphere from the poles.

Anonymous said...

Responding to what Rick said. I don't believe it is because of the earth's tilt that the southern hemisphere has no humid continental climate.You see the earth's tilt isn't it moves depending on the time so sometimes the southern hemisphere is exposed to more sun. The last time a major tilt occurred was 3,000 years ago and that transformed the sahara desrt from a lush forest into the desert it is now. It is also one of the reasons the poles are covered in ice, as they used to be tropical forest in prehistoric ages. I know you'll argue that these things are gradual, but the sahara desert took a mere 100 years to turn into a wasteland maybe even in a person's lifetime, so no I don't believe the earth's tilt is why the southern hemisphere has no humid continental climate.

Rick Per. 1 said...

In response to Frank, I did overlook the fact that the Earth's rotation sometimes gives the souhern hemisphere more sun and sometimes it doesn't. I do agree with you that the cause of the Southern hemisoheres lack of humid-continental climate is due to ocean currents and wind patterns

Brandon Pd 1 said...

In response to Rick, both the northern and southern hemisphere's are equally exposed during different times of the year. That explains the reason why we have two solaces. When the Northern hemisphere is closer to the sun it is summer. When the Southern hemisphere is farther it is winter. A good example is Australia, its winter in August.

aaryn p1 said...

One reason that the humid-subtropical climate is not found in the Southern Hemisphere is because warm ocean, and cold ocean currents do not collide nearly as much as they do in the Northern Hemisphere. In the Southern Hemisphere there are not nearly as much warm water currents as there are in the Northern Hemisphere, mostly cold in the south.
Another reason I believe there are no humid-continental climates in the South is because, this climate is only fount between 35 and 60 degrees latitude. There is a lot of land in the Northern Hemisphere between these two latitude lines, but in the Southern Hemisphere there is nearly none. And the little bit of land that is there (in South America) is much more coastal (than inland). Which i think greatly affects the climate.

Brandon Pd 1 said...

In response to Aaryn's most recent comment I would have to disagree. Land masses do not play a factor in the formation of humid-continental climates. A quick search on the internet shows the eastern coast of China as having a humid-continental climate. The climates are dependent on the ocean and air currents.

Priya Vij, per 1 said...

In response to Brandon, I don't disagree with you but I think that there is more to the Human Continental climate than just the ocean and air flow. Take a look at New York and the areas surrounding it-they are all a part of the human continental climate. Now if you take the latitude and longitude that this is located at and reflect it over the equator into the Southern Hemisphere there is no large land mass there. A Large land mass in necessary to support the humid continental climate, Hens the name Human CONTINENTAL climate, if there is no large land mass such as a continent that would be the simple answer as to why they humid continental climate doesn't exist in the Southern hemisphere-because there are no large land masses where there are in the Northern hemisphere.

Also, I would like to add that like the biosphere question blog, there is not just one definite correct answer to this question about the humid continental climate. There are many factors as to why this climate doesn't exist in the Southern Hemisphere and I'm sure in the future many more reasons will be discovered.

Tommy said...

The humid continental climate is generally found in upper-middle latitudes. One of the main reasons why this climate is not found in the southern hemisphere is because there is not enough land in this area for this climate to be present. Furthermore, it is often found in the interior of larger land masses, so any land that is located in this area of the southern hemisphere is not large enough to have an "interior."
However, Australia is a large, yet often overlooked land mass. While this is not classified as Humid Continental climate, it is classified as Humid Subtropical, which is similar in many ways except that it has higher winter temperatures. However, I have a friend in south-western Australia, and I know that it can get quite cool there. However, there is not a large enough area with a low enough to denote the Humid Continental climate.

Tommy said...

Responding to Frank's first comment...
I did not think about the ocean currents or winds. You bring up a good point. However, could you be more specific about how those affect the climate?
Also, you said that "the southern hemisphere does not have enough land mass for this type of climate." Are you aware that Australia is about 2 million square miles, and the United States is 3 million square miles? If you do not consider Australia to be a large land mass, then very few countries are worthy of that title. Also, South America is also very large. However, neither of these continents have the right conditions to be labeled as Humid Continental climate. I just wanted to make sure you understood what you were calling "not enough land mass."

Rick Per. 1 said...

In response to Brandon, I agree with you in the fact that the Northern and Southern hemispheres get equal amounts of sunlight, but the point I an making is that due to the tilt, the Southern Hemisphere gets it more directly because of the fact that the tilt points the Southern Hemisphere more towords the sun.

Rachel Pd. 1 said...

The reason that humid continental climate is not found in the southern hemisphere is because of the fact that there is much more land mass mass in the northern hemisphere between bodies of water. IN the southern hemisphere there is large open expanses of water with nothing in them.

Also the wind currents affect the fact that there is no humid continental climate. The polar winds are not close enough to affect the amount of rainfall the land-masses receive. Humid continental climate has a lot of precipitation; so without the colliding warm and cold fronts there is no rain.

This is why there is no Humid Continental climate in the southern hemisphere

Rachel Pd. 1 said...

Responding to what Rick said. The distance between the continents to the polar regions in the northern hemisphere is a lot less than what it is in the southern hemisphere.

Tommy said...

Responding to Rick's latest comment...
Both hemispheres receive equal amount of light throughout the year. During our winter, the southern hemisphere is tilted towards the sun and experiences summer. However, in our summer, the southern hemisphere is tilted away from the sun. They do not receive more direct sunlight. However, most of the continents are further away from the poles, as Rachel said, so the majority of land does receive more direct sunlight. However, this is caused by land positions, not Earth's tilt.

Ajay said...

Humid continental climates are generally located over large land masses, and are influenced by continental polar and tropical air masses. These air masses are created by warm and cold currents in the ocean.

Therefore, because the southern hemisphere lacks large land masses, the influential ocean currents, and the influential air masses, humid continental climates cannot be found there.

Ajay said...

@Tommy: You are correct that the southern hemisphere does have large land masses. However, it doesn't have large land masses in the right places. In order for a humid continental climate to exist, large land masses must exist between 30° and 60° (N or S).

Ajay said...

@Brandon: Although I agree that air currents do play a large role in determining the climate, I disagree with your view that land doesn't affect the climate.

Humid continental climates form specifically above the interior of large land masses, where it is far from the influence of the ocean. This is what allows for the climate to form.

Lauren Bacon- period 1 said...

It is evident that the humid-continental climate is not found in the Southern Hemisphere for several reasons (as many have already stated above). To begin with, large landmasses are absent in the Southern Hemisphere. This is significant due to the fact that broad landmasses are needed to produce freezing temperatures during the extreme winters and warm summers. In addition, in the Northern Hemisphere, a conflict exists between tropical air masses and polar air masses. This collision (or front), which is present in the middle-latitudes, causes diverse weather conditions, assorted amounts of precipitation, as well as variations in temperature (these are characteristics of the humid-continental climate). Finally, though this fact is obvious, the westerlies move weather patterns across the middle-latitudes, which cause storms and other weather conditions that fit the description of this particular climate. As a result, the Southern Hemisphere would not be able to support the humid-continental climate.

Lauren Bacon- period 1 said...

Responding to Rick’s first comment. I disagree with your statement as to why the humid continental climate is not found in the Southern Hemisphere. Two factors that point to why this climate is not located in this hemisphere are the ocean currents and the collision of air masses. The Earth’s rotation, gravitation of our moon, and wind affect the ocean currents; however, the Earth’s tilt does not seem to affect them. In conclusion, the air masses (affected by the ocean currents) that produce variations in weather (a main trait of the humid-continental climate) are not affected by the Earth’s tilt. As a result, I do not agree with your explanation as to why this specific climate is not found in the Southern Hemisphere (sorry).

Rachel Pd. 1 said...

@Lauren: I agree with you. The lack of land mass in the southern hemisphere is a very good reason that there is no humid continental climate. Without more land mass there are no incredibly obvious temperature changes. Of course there are seasons; its just that they are not as prominent as in the northern hemisphere.

bailee period 1 said...

i think the main reasons for no humid continental in the south hemisphere is the ocean currents(shown on 28 & 29) and air currents. also i think that the way the land is helps because humid continental is on the inside of a continent and there inst much land mass so that is why there is no humid continental

bailee period 1 said...

In response to ricks first comment the south does not point towards the sun more than the north they recieve equal over the year period so this is not a reason for there being no humid continental.

Anonymous said...

Some of the main reasons why the humid-continental climate is not found in the southern hemisphere is because of the earth's air flow and the ocean currents. Another reason is because there are not many large land forms in the southern hemisphere. You usually find the humid-continental climate found towards the middle of a continent, which most of the larger land masses are found in the northern hemisphere.

Anonymous said...

Responding to Rick's first comment- I disagree with your reasoning behind why the humid-continental climate is not found in the southern hemisphere. There is many more reasons than "that it is much hotter down there." The southern hemisphere gets the same amount of sunlight as the northern, making it around the same amount of heat.

Ross period.1 said...

I believe that the reason why humid-continental weather is not in the southern hempishere is because that there is not as much land mass down the south. It also has to do with the flow of the air flow.

Lauren Bacon- period 1 said...

Responding to Bailee’s first comment. I definitely agree with your reasoning behind why the humid-continental climate is not found in the Southern Hemisphere. The ocean currents, air currents, and absence of large landmasses are without a doubt the main explanations. Yes, the humid-continental climate is usually located on the interior of a landform, but it has to be large for this climate to occupy that space. In my opinion, you have it absolutely correct.

Ross period.1 said...

In response to ricks first cooment. I agree completely with you that the earth does not get as much sun down there. A lot of it also has to do with the wind and ocean currents also.

Hannah S. Period 1 said...

Humid-continental climate is not found in the Souther Hemisphere because there is not enough land mass in this location. In addition, it is found in the Middle Latitudes of the Earth, which is clearly not where the Southern Hemisphere is located. Plus, the Southern Hemisphere is mostly warm the entire year while tbe Middle Latitudes vary from mild summers to harsh winters and humid-continental climates cannot occur in those conditions.

Hannah S. Period 1 said...

In response to Rick's first comment- I agree with your comment about the Southern Hemisphere being warmer due to the fact that the bottom half of the Earth tilts toward the sun. It makes a lot of sense that the closer you are to the sun, the warmer it will be. Plus, it has become very evident that dry heat (like the heat in the Southern Hemisphere) does not cause humidity, therefore a humid-continental climate would not be lcoated there.

Andy Waldo, p.1 said...

In response to Ajay's second comment, I completely agree with you. Land mass is absent in the areas needed to for a humid continental climate. In the southern hemisphere the three continents the are in the areas needed to form the humid continental climate (30º-60º) don't have much land the width side but are very tall. They aren't very wide at all compared to Asia or North America.

Andy Waldo, p.1 said...
This comment has been removed by the author.
aaryn p1 said...

Hannah-
I agree completely with your comment of how there is not enought land mass in the Southern Hemishphere. And that the southern hemisphere is offten warm becasue of the tilt of the sun.

Andy Waldo, p.1 said...

In response to Hannah's second comment, I agree that the southern hemisphere is very dry. Areas that are dry don't get much humidity which is needed for the humid continental climate.

Ross period.1 said...

Andy in response to first statement: I believe that there is no humid continetal climate because of the land mass. If there was more land mass it would probabl be there.

Hannah S. Period 1 said...

Mackenzie :]

In response to your first comment, I agree with your statement about there not being very many large land forms in the Southern Hemisphere. In order for there to be a humid-continental climate more land forms are needed.

Eric O. p.1 said...

I also could not find the answere to this in my book but with a little internet research i found that the reason that this climate does not exsist in the area is because the land mass is small and the ocean surrounding it keeps the continent cool and not very humid.

Eric O. p.1 said...

In response to franks original comment: I completely agree with you except for the bit about the ocean currents and wind patterns. I personaly do not see how the ocean current can effect the weather on land. And the wind patterns i do not bealive have much of an effect either. all you need it wind to blow air from the ocean onto land. it doesnt much matter what direction its coming from.

aaryn p1 said...

Eric-
I agree with you about how there is not enough land for it to be humid continental. ALso how it is to near the ocean, which means that it is not "continental". However it may be humid.

Anonymous said...

Responding to Hannahs comment-
I agree with you on this one. The reason is that there is not enough land mass, so I totally agree with you. I also agree with you on the tempatures, it depends on the tepatures where the humid-continetal climate is found.

bailee period 1 said...

Eric-
i agree with you there is not enough land mass and the oceans dont make it very humid