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Specific humidity (or moisture content) is the ratio of the mass of water vapor to the total mass of the air parcel. [15] Specific humidity is approximately equal to the mixing ratio, which is defined as the ratio of the mass of water vapor in an air parcel to the mass of dry air for the same parcel.
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The MMS functioned as usual during World War II and the Japanese occupation of Singapore in 1942–45. However, the Japanese destroyed the MMS's records and equipment prior to surrendering in 1945; full service was restored only in 1947. [3] Consequently, Singapore's climate records are missing temperature data from 1942–47. [4]
The dry-bulb temperature (DBT) is the temperature of air measured by a thermometer freely exposed to the air, but shielded from radiation. [1] The dry-bulb temperature is the temperature that is usually thought of as air temperature, and it is the true thermodynamic temperature.
This notation leads to the modern signs for degrees, minutes, and seconds. The same minute and second nomenclature is also used for units of time, and the modern notation for time with hours, minutes, and seconds written in decimal and separated from each other by colons may be interpreted as a form of sexagesimal notation.
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.
Singapore has a tropical rainforest climate (Köppen: Af) with no distinctive seasons, uniform temperature and pressure, high humidity, and abundant rainfall. [310] [311] Temperatures usually range from 23 to 32 °C (73 to 90 °F). While temperature does not vary greatly throughout the year, there is a wetter monsoon season from November to ...
Because of the structure of the SYNOP code, a maximum of three cloud symbols can be plotted for each reporting station that appears on the weather map. All cloud types are coded and transmitted by trained observers then plotted on maps as low, middle, or high-étage using special symbols for each major cloud type.