Factors affecting global Factors affecting global temperaturestemperatures

As can be seen from the graph to

the left, temperatures decrease with

increasing latitude. Why?

Latitude

Angle with which the sun’s rays hit the Earth

World Mean sea-level temperatures in January in Degrees Celcius

World Mean sea-level temperatures in July in Degrees Celcius

Effect of the seasonal

movement of the direct ray

on temperatures.

Distance from the Sea

This map shows the effects of distance from the ocean on the differences between summer and winter temperatures. Note Asia!

Prevailing winds

Ocean currentsOcean currents

One example is the Gulf Stream (shown in red on the map

Altitude

In general, temperatures drop 1°C for every 100 metres climbed in dry air (0.6°C for every 100 metres climbed in moist air).

The right hand slope is facing the sun, keeping it free of snow for longer. This slope is in the United Kingdom, and therefore is facing south.

Aspect

TASK: NWW page 211 – Answer Q1d page 227

True or falseTrue or false…‘Generally speaking… to feel warmer, …‘Generally speaking… to feel warmer, you should….’you should….’

1 Go uphill1 Go uphill

2 In winter, head to the coast 2 In winter, head to the coast

3 Go towards the equator3 Go towards the equator

4 In winter, go to a place where the prevailing wind is 4 In winter, go to a place where the prevailing wind is coming from over a sea/oceancoming from over a sea/ocean

5 Go somewhere where the ocean current is moving 5 Go somewhere where the ocean current is moving towards the equatortowards the equator

6 In winter, especially at night time, go where there is 6 In winter, especially at night time, go where there is some cloud coversome cloud cover

7 Be in the south stand when at a sports stadium7 Be in the south stand when at a sports stadium

Video questions – e.g. tape 55 form 2:13:12 to 2:23:00 (or tape 89?)Video questions – e.g. tape 55 form 2:13:12 to 2:23:00 (or tape 89?)

1)1) At what latitude does a beam of At what latitude does a beam of sunlight cover twicesunlight cover twice as much land as one on the equator… as much land as one on the equator… 40, 60 or 8040, 60 or 80 degrees latitude?degrees latitude?

2)2) When it’s sunny there is always When it’s sunny there is always shadows in Europe – shadows in Europe – true or falsetrue or false ? ?

3)3) Which Which aspectaspect receives more sunlight – receives more sunlight – north or southnorth or south facing?facing?

4)4) The temperature drops by The temperature drops by 11 in every in every 100 / 150 / 200100 / 150 / 200 metres as you increase in metres as you increase in altitudealtitude..

5)5) During the During the dayday which which heats up fasterheats up faster – – land or sealand or sea??

6)6) Which Which coolscools down down faster at nightfaster at night – – land or sealand or sea??

7)7) Which Which changeschanges temperature temperature less throughless through the the year year – – sea or landsea or land??

8)8) The The North Atlantic Drift startsNorth Atlantic Drift starts in which in which seasea ? ?9)9) It keeps which It keeps which areas of Europe warmer in areas of Europe warmer in

winterwinter ? ? 10)10)What’s the name of the What’s the name of the cold currentcold current going going

down the down the east coast of N. America in wintereast coast of N. America in winter – – Labrador, Wolfhound or SausageLabrador, Wolfhound or Sausage? ?

11)11)Which is Which is colder in winter – E of N. America colder in winter – E of N. America or W. of Europeor W. of Europe ? ?

12)12)As you go As you go inland in Europeinland in Europe, going , going easteast, do , do winter tempswinter temps get get colder or warmercolder or warmer ? ?

13)13)What effect do What effect do cloudsclouds have have at night timeat night time… … hot water bottle, blanket or cough mixture hot water bottle, blanket or cough mixture effecteffect ? ?