## What does a Stüve diagram show?

A Stüve diagram is one of four thermodynamic diagrams commonly used in weather analysis and forecasting. Wind barbs are often plotted at the side of the diagram to indicate the winds at different heights they are used to save space with symbols to help in charts.

What data are plotted on a sounding or Stüve diagram?

A Stüve diagram with sounding data contains: Temperature sounding data – black jagged line to right. The temperature scale is given in degrees Celsius along the bottom from -80 C to +40 C. Dewpoint sounding data – black jagged line to left.

### What does the dashed red line on the sounding represent?

The red line shows how the air temperature varies with altitude. The dashed black line shows how the temperature of the dew point changes with altitude. If one knows the dewpoint and pressure of an air parcel, then one can tell how much water vapor the air actually contains. This is the actual mixing ratio.

What does the tropopause do?

The tropopause is an important boundary layer in Earth’s atmosphere dividing the lowermost atmospheric layer, the troposphere, from the stratosphere.

#### How do you read an aerological diagram?

The time the weather balloon was released is shown at the bottom of the diagram in red. The previous sounding time/date is in blue. Along the right hand side of the diagram are wind speed and direction barbs. They point towards the way the wind is heading but are referred to by the direction the wind is coming from.

How do you calculate lifted index?

The lifted index (LI) is calculated as the difference between the observed temperature at 500 hPa and the temperature of an air parcel lifted to 500 hPa from near the surface. The more unstable the environment, the more negative the LI. These threshold values are valid for the eastern 2/3 of the United States.

## Which is called the tropopause limit?

The tropopause is traditionally defined by meteorologists as the lowest level at which the rate of decrease of temperature with respect to height (normally about 6 K km−1 in the troposphere) decreases to 2 K km−1, and the average from this level to any level within the next 2 km does not exceed 2 K km−1.

What are 5 facts about the troposphere?

Fact Sheet

• The troposphere contains 75% of the atmosphere’s total mass.
• In either space or time the troposphere is not constant.
• Weather occurs in the troposphere.
• The troposphere is 10 miles from the equator.
• The troposphere is 5-7 miles above the poles.
• Does not contain ozone.

What does a Stüve diagram show? A Stüve diagram is one of four thermodynamic diagrams commonly used in weather analysis and forecasting. Wind barbs are often plotted at the side of the diagram to indicate the winds at different heights they are used to save space with symbols to help in charts. What data are…