The cloud height, more commonly known as cloud thickness or depth, is the distance between the cloud base and the cloud top. This calculator is designed to give an approximate but calculated altitude for the base of cumulus clouds, based on entered data. Multiply the … Here’s how to calculate a cloud base: Find the difference between the temperature at the surface and the dew point. Building on a previous algorithm, CBH is estimated by combining measurements from CloudSat/CALIPSO and MODIS based on the International Satellite Cloud Climatology Project (ISCCP) cloud-type classification and a weighted distance algorithm. The formula for calculating the approximate base of the formed clouds is Cloud Base Altitude = ((((temperature - dew point) / 4.5) * 1000) + measure station altitude). Divide the difference between 2.5. Cloud base height (CBH) is an important cloud macro parameter that plays a key role in global radiation balance and aviation flight. All you need to calculate an estimate for cloud height is the surface temperature and dew point temperature in degrees °C.