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START Warm air blows . START Warm air blows . From the west Off the Atlantic Ocean. Carrying a lot of moisture The warm air is forced. START Warm air blows. From the west Off the Atlantic Ocean. Carrying a lot of moisture The warm air is forced.

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Presentation Transcript
slide1

START

Warm air blows

slide2

START

Warm air blows

From the west

Off the Atlantic Ocean

slide3

Carrying a lot of moisture

The warm air is forced

START

Warm air blows

From the west

Off the Atlantic Ocean

slide4

Carrying a lot of moisture

The warm air is forced

To rise over the Atlas Mountains of Morocco

And in so doing the air cools.

START

Warm air blows

From the west

Off the Atlantic Ocean

slide5

The cooling causes moisture in the air

To condense

Carrying a lot of moisture

The warm air is forced

To rise over the Atlas Mountains of Morocco

And in so doing the air cools.

START

Warm air blows

From the west

Off the Atlantic Ocean

slide6

The cooling causes moisture in the air

To condense

Giving clouds

As the air rises higher

Carrying a lot of moisture

The warm air is forced

To rise over the Atlas Mountains of Morocco

And in so doing the air cools.

START

Warm air blows

From the west

Off the Atlantic Ocean

slide7

There is heavy rain over the Atlas Mountains

And even snow

The cooling causes moisture in the air

To condense

Giving clouds

As the air rises higher

Carrying a lot of moisture

The warm air is forced

To rise over the Atlas Mountains of Morocco

And in so doing the air cools.

START

Warm air blows

From the west

Off the Atlantic Ocean

slide8

There is heavy rain over the Atlas Mountains

And even snow

In winter

This is called RELIEF RAINFALL

The cooling causes moisture in the air

To condense

Giving clouds

As the air rises higher

Carrying a lot of moisture

The warm air is forced

To rise over the Atlas Mountains of Morocco

And in so doing the air cools.

START

Warm air blows

From the west

Off the Atlantic Ocean

slide9

There is heavy rain over the Atlas Mountains

And even snow

In winter

This is called RELIEF RAINFALL

Relief Rainfall

The cooling causes moisture in the air

To condense

Giving clouds

As the air rises higher

Carrying a lot of moisture

The warm air is forced

To rise over the Atlas Mountains of Morocco

And in so doing the air cools.

START

Warm air blows

From the west

Off the Atlantic Ocean

slide10

But then the air sinks

After passing the mountains

slide11

But then the air sinks

After passing the mountains

And as the air sinks it warms

So any moisture in the air

slide12

But then the air sinks

After passing the mountains

And as the air sinks it warms

So any moisture in the air

Evaporates

Making the clouds disappear

slide13

But then the air sinks

After passing the mountains

And as the air sinks it warms

So any moisture in the air

Evaporates

Making the clouds disappear

Leaving clear blue skies

And permanently dry weather

slide14

But then the air sinks

After passing the mountains

And as the air sinks it warms

So any moisture in the air

Evaporates

Making the clouds disappear

Leaving clear blue skies

And permanently dry weather

In the arid Sahara Desert.

This area in Libya and Algeria

slide15

But then the air sinks

After passing the mountains

And as the air sinks it warms

So any moisture in the air

Evaporates

Making the clouds disappear

Leaving clear blue skies

And permanently dry weather

In the arid Sahara Desert.

This area in Libya and Algeria

Of really dry conditions

On the leeward side

slide16

But then the air sinks

After passing the mountains

And as the air sinks it warms

So any moisture in the air

Evaporates

Making the clouds disappear

Leaving clear blue skies

And permanently dry weather

In the arid Sahara Desert.

This area in Libya and Algeria

Of really dry conditions

On the leeward side

(Or sheltered side) of the mountains

Is called a RAIN SHADOW area

slide17

But then the air sinks

After passing the mountains

And as the air sinks it warms

So any moisture in the air

Evaporates

Making the clouds disappear

Leaving clear blue skies

And permanently dry weather

In the arid Sahara Desert.

This area in Libya and Algeria

Of really dry conditions

On the leeward side

(Or sheltered side) of the mountains

Is called a RAIN SHADOW area

Rain Shadow