Warm Sector 1Radar Palette Home Click Doppler

Ahead of WCB within the Warm Sector

These conceptual models will be virtually identical to those associated with the three locations north of the warm front with the exceptions that:

• There will be and cannot be any evidence of the cold conveyor belt

• The veering and backing with height signatures will be less pronounced

• The reduced extent of warm sector precipitation will be an issue

• Gulls are found in the warm sector, more so than eagles… Click for the Conceptual Model and Explanation

Warm Sector 2Radar Palette Home Click Doppler

WCB

CCB

Cross-section along Central Branch of the Warm Conveyor Belt (WCB) totally

within the WCB

Content under development

Mixing Zone

SurfaceWarm Front

Increasing CCB Moistening

WCB oriented for

maximum frontal lift

Virga Precipitation

Lower

Hydrometeor

Density

A

B

A B

PrecipitationAt Surface

Warm Sector 3Radar Palette Home Click Doppler

Right of the WCB in the Warm Sector

o

C

Within the WCB:•East of radar veering, warm advection•West of radar nil VWS

Within the PBL:•Probable Ekman spiral near surface resulting in slight veering with range

The Headless Right Wing Stoop CM

The headless gull’s right wing is folded in as if it is about to swoop down.The left wing is still fully extended to catch the lift of the WCB.

Right W

ing

Left

Wing

Signature ofEkman Spiral

Warm Sector 4Radar Palette Home Click Doppler

The Headless Right Wing Stoop CMThis slide is reserved for an actual radar example.

o Right W

ing

Left

Wing

Warm Sector 5Radar Palette Home Click Doppler

Warm Sector 6Radar Palette Home Click Doppler

Warm Sector 7Radar Palette Home Click Doppler

Warm Sector 8Radar Palette Home Click Doppler

Warm Sector 9Radar Palette Home Click Doppler

Warm Sector 10Radar Palette Home Click Doppler

Warm Sector 11Radar Palette Home Click Doppler

Under WCB

• This is totally within the warm sector• Only the WCB is sensed• Cloud and precipitation streets will be sensed

Click for the Conceptual Model and Explanation

Warm Sector 12Radar Palette Home Click Doppler

WCB

CCB

Cross-section along Central Branch of the Warm Conveyor Belt (WCB) totally

within the WCB

Content under development

Mixing Zone

SurfaceWarm Front

Increasing CCB Moistening

WCB oriented for

maximum frontal lift

Virga Precipitation

Lower

Hydrometeor

Density

A

B

A B

PrecipitationAt Surface

Warm Sector 13Radar Palette Home Click Doppler

Within the WCB:•East of radar veering, weak warm advection – veering winds possible•West of radar backing, cold advection – backing winds possible

Under the WCB in the Warm Sector

o

Within the PBL:•Probable Ekman spiral near surface resulting in slight veering with range

The Headless Gull CM

Both wings are fully extended to catch the lift of the WCB. This is a straight line uniform wind field but could be a slightly divergent signature.

Right WingLeft Wing

Note that headless gulls can’t scream…The advections in the warm sector do not warrant this being called an eagle pattern.

Warm Sector 14Radar Palette Home Click Doppler

The Headless Gull CMThe southwesterly WCB is essentially a straight flow but there are hints of the upper level divergence depicted in the conceptual model. o Right WingLeft W

ing

Warm Sector 15Radar Palette Home Click Doppler

A

B

C

D

E

F

G

The Headless Gull CMThe southwesterly WCB is essentially a straight flow but there are hints of the upper level divergence depicted in the conceptual model.

o Right WingLeft Wing

•A and B and the black lines joining the inflexion points represent the top of the veering partly due to the Eckman spiral and perhaps some residual warm air advection. Note the A line is “sharper “ looking than B.•C to D represents a low level jet max. •Notice that outward from A and B and the inflexions the lines of constant radial velocity are nearly parallel( except for some slight backing from B to G) to the radials indicating constant wind direction. •We see a higher level jet max from E to F.

Warm Sector 16Radar Palette Home Click Doppler

Warm Sector 17Radar Palette Home Click Doppler

Warm Sector 18Radar Palette Home Click Doppler

Warm Sector 19Radar Palette Home Click Doppler

Warm Sector 20Radar Palette Home Click Doppler

Warm Sector 21Radar Palette Home Click Doppler

Behind WCB in the Warm Sector

Click for the Conceptual Model and Explanation

Warm Sector 22Radar Palette Home Click Doppler

WCB

Cross-section along Central Branch of the Warm Conveyor Belt (WCB) totally

within the WCB

Content under development

SurfaceWarm Front

A

B

A B

CCB

Mixing ZoneIncreasing CCB

Moistening

Virga Precipitation

Lower

Hydrometeor

Density

B

PrecipitationAt Surface

Warm Sector 23Radar Palette Home Click Doppler

Left of the WCB in the Warm Sector

Within the WCB:•West of radar backing, cold advection•East of radar nil VWS

Within the PBL:•Probable Ekman spiral near surface resulting in slight veering with range o

The Headless Left Wing Stoop CM

The headless gull’s left wing is folded in as if it is about to swoop down.The right wing is still fully extended to catch the lift of the WCB.

Right Wing

Left

Win

g

C

Warm Sector 24Radar Palette Home Click Doppler

The Headless Left Wing Stoop CMThis slide is reserved for an actual radar example. o

Right Wing

Left

Win

g

Warm Sector 25Radar Palette Home Click Doppler

Behind WCB pre Cold Front

Warm Sector 26Radar Palette Home Click Doppler

Behind WCB

Warm Sector 27Radar Palette Home Click Doppler

Behind WCB

Warm Sector 28Radar Palette Home Click Doppler

Behind WCB

Warm Sector 29Radar Palette Home Click Doppler

Behind WCB

Warm Sector 30Radar Palette Home Click Doppler

Behind WCB

Warm Sector 31Radar Palette Home Click Doppler

This must be and remain as Slide 31.

• The links to the three sections of the airflows that comprise each of the conveyor belts are located at Slide 1,11 and 21.

• Slide 11 is always the central, col limited circulation.

• This leaves 10 PowerPoint slides for the development of the training material which should be more than adequate.