How do you find the potential temperature of a Tephigram?

From the temperature at 700 hPa, follow a dry adiabat dry adiabat down to 1000 hPa, where the value of the isotherm is 18°C = 291K = potential temperature (theta).

How do you read a Tephigram?

The principal axes of a tephigram are temperature and potential temperature; these are straight and perpendicular to each other, but rotated through about 45º anticlockwise so that lines of constant temperature run from bottom left to top right on the diagram.

How do you calculate equivalent potential temperature?

1. = equivalent temperature.
2. = specific gas constant for air (287.04 J/(kg·K))

How do you find the wet bulb potential temperature of a skew-T?

Wet bulb temperature can be found by the following sequence:

1. Pick a pressure level.
2. Find LCL from that pressure level.
3. From LCL go back down the sounding at the wet adiabatic lapse rate to the original pressure.
4. This temperature is the wet bulb temperature.

How is wet bulb temperature used in meteorology?

Meteorology – forecasters use wet-bulb temperature to predict rain, snow, or freezing rain. Wet-Bulb Globe Temperature is a kind of an apparent temperature – the temperature perceived by humans – used to estimate the effect of temperature, humidity, wind speed, and sunlight on humans.

What are the principal quantities in a tephigram?

A blank tephigram is shown in figure 1; there are five principal quantities indicated by constant value lines: pressure, temperature, potential temperature (θ), saturation mixing ratio, and equivalent potential temperature (θ e) for saturated air.

How to find the wet bulb temperature in skew-T?

Skew-T Derived Parameters 1 Pick a pressure level 2 Find LCL from that pressure level 3 From LCL go back down the sounding at the wet adiabatic lapse rate to the original pressure 4 This temperature is the wet bulb temperature

How is the stability of the atmosphere determined by tephigram?

Regions where the temperature and dew point temperature are equal indicate where the radiosonde passed through saturated air – cloud (Figure 2(b)). The stability of the atmosphere can be determined from the temperature profile on a tephigram, along with the approximate vertical extent of any convective lifting and of consequent cloud formation.