PDF document discussing the gradient wind equation from the perspective of nondimensionalization. The result is a highly intuitive understanding of the gradient wind equation.

## Lognormal Distributions

A discussion of the mathematics of lognormal distributions and some calculations that are relevant for atmospheric physics.

## Solid Angle

A lecture on solid angle from a remote sensing class I taught at Rutgers University.

## Snake Lemma

A complete proof of the snake lemma. This will only be relevant to you if you care about commutative algebra.

## Unit Circle

This is a nice looking unit circle, complete with the x and y values for some common angles.

## Limits

A lecture on limits for a first year calculus course I taught at Purdue University.

## Dice

A program for rolling arbitrary-sided dice.

## Area Weighting

This program allows you to generate area weighting for regularly spaced grids. This comes up a lot in dealing with climate model output.

This is a very simple model that can calculate the radiative equilibrium temperature at an arbitrary number of levels.

## Frost Point

This program can calculate the frost point at a given pressure for given mass mixing ratios of water OR can calculate the saturation mixing ratio over water and ice for a given pressure and temperature.

## Insolation

This program calculates the daily average insolation received for any specified Milankovitch parameters.

## Lognormal Distribution

This program will calculate a lognormal distribution for a variety of potential inputs.

## Solar Zenith Angle

This program calculates the solar zenith angle as a function of hour, day, latitude, and (optional) Milankovitch parameters.