TOC Back Forward Primer for Skew-T Diagram Use In Atmospheric Thermodynamics.

TOC Back Forward Table of Contents Location of Chart Lines Saturation Point

TOC Back Forward The Skew-T diagram contains multiple parameters to calculate thermodynamic variables. They include: Pressure - p (mb)

TOC Back Forward The Skew-T diagram contains multiple parameters to calculate thermodynamic variables. They include: Pressure - p (mb) Temperature - T

TOC Back Forward The Skew-T diagram contains multiple parameters to calculate thermodynamic variables. They include: Pressure - p (mb) Temperature - T Saturation Mxing Ratio - r v

TOC Back Forward The Skew-T diagram contains multiple parameters to calculate thermodynamic variables. They include: Pressure - p (mb) Temperature - T Saturation Ratio - r v Saturated Adiabats -  e

TOC Back Forward The Skew-T diagram contains multiple parameters to calculate thermodynamic variables. They include: Pressure - p (mb) Temperature - T Saturation Ratio - r v Moist Adiabats -  e Dry Adiabats - 

TOC Back Forward Saturation Point Given T and dew point (T d ) at a specific pressure, locate the saturation point

TOC Back Forward Saturation Point Given T and dew point (T d ) at a specific pressure, locate the saturation point. Inputs: a) Temperature at p T

TOC Back Forward Saturation Point Given T and dew point (T d ) at a specific pressure, locate the saturation point. a)Temperature at p 0 b)Dewpoint temperature at p T TdTd

TOC Back Forward Saturation Point Given T and dew point (T d ) at a specific pressure, locate the saturation point. Draw a line from T, parallel to the dry adiabat… T TdTd

TOC Back Forward Saturation Point Given T and dew point (T d ) at a specific pressure, locate the saturation point. Draw a line from T, parallel to the dry adiabat, and a line from T d, parallel to r vs … T TdTd

TOC Back Forward Saturation Point Given T and dew point (T d ) at a specific pressure, locate the saturation point. Draw a line from T, parallel to the dry adiabat, and a line from T d, parallel r v. The intersection is the saturation point T TdTd Saturation point

TOC Back Forward Saturation Point Given T and dew point (T d ) at a specific pressure, locate the saturation point. Saturation pressure at T and T d can be determined p sp