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The Mahoney Tables (Evans, 1999; Evans, 2001) proposed a climate analysis sequence that starts with the basic and widely available monthly climatic data of temperature, humidity and rainfall, such as that found in HMSO (1958) and Pearce and Smith (1990), or data published by national meteorological services, for example SMN (1995).
The representation is made on a temperature-relative humidity, instead of a standard psychrometric chart. The comfort zone in blue represents the 90% of acceptability, which means the conditions between -0.5 and +0.5 PMV, or PPD < 10%.
Climate charts provide an overview of the climate in a particular place. The letters in the top row stand for months: January, February, etc. The bars and numbers convey the following information: The blue bars represent the average amount of precipitation (rain, snow etc.) that falls in each month. The blue numbers are the amount of ...
While temperature is typically visualized using a line, some climographs opt to visualize the data using a bar. This method's advantage allows the climograph to display the average range in temperature (average minimum and average maximum temperatures) rather than a simple monthly average.
The humidity adjustment approximately amounts to one Fahrenheit degree for every millibar by which the partial pressure of water in the atmosphere exceeds 10 millibars (10 hPa). At the time the humidex was originally developed in 1965, Canada was still on the Fahrenheit scale , and thus the humidex was originally based on that.
The rainfall distribution by month in Cairns, Australia. The wet season (sometimes called the rainy season or monsoon season) is the time of year when most of a region's average annual rainfall occurs. [1] Generally, the season lasts at least one month. [2] The term green season is also sometimes used as a euphemism by tourist authorities. [3]
Psychrometric charts [16] are available in SI (metric) and IP (U.S./Imperial) units. They are also available in low and high temperature ranges and for different pressures. Determining relative humidity: The percent relative humidity can be located at the intersection of the vertical dry bulb and diagonally down sloping wet bulb temperature lines.
Mean monthly sunshine hours: 213 234 269 291 324 357 363 351 311 292 248 198 3,451 Percent possible sunshine: 66 75 73 75 77 85 84 86 84 82 78 62 77 Average ultraviolet index: 4 5 7 9 10 11.5 11.5 11 9 7 5 3 7.8 Source 1: NOAA (humidity, dew point, records 1961–1990) [1] [2]