The climate ID is a 7 digit number assigned by the Meteorological Service of Canada to a site where official weather observations are taken, and serves as a permanent, unique identifier. It differs from weather, which is concerned with short term or instantaneous variations in the state of the atmosphere at a specific time. Climatology, or the study of climate, includes climatic data, the analysis of the causes of the differences in climate, and the application of climatic data to the solution of specific design or operational problems. Statistics are generally drawn over several decades. The historical record and description of average daily and in seasonal weather events that help describe a region.

To convert from degrees Celsius to degrees Fahrenheit, ( C * 9/5) + 32 Climate In 1948, the Ninth General Conference on Weights and Measures replaced 'degree centigrade' with 'degree Celsius.' Commonly used in countries that observe the metric system of measurement. CelsiusĪ temperature scale where water at sea level has a freezing point of 0 ☌ (Celsius) and a boiling point of +100 ☌. Top of Page C CalmĪn absence of wind flow or any other air motion. Snow particles violently stirred up by wind to sufficient heights above the ground to reduce visibility to 10 km or less. Visibility at eye level may be reduced to 1 km. Top of Page B Blowing Dustĭust that is raised by the wind, to moderate heights above the ground. Measurement units for pressure are called hectopascals (hPa). It is equal to the weight of a vertical column of air of a unit area, extending from a given elevation or level to the outer limit of the atmosphere. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A Atmospheric Pressure/Barometric PressureĪtmospheric Pressure, also called barometric pressure, is the force per unit area exerted by the atmosphere as a consequence of its weight.

What does t minus 3 days mean