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Earth rainfall climatology Is the study of rainfall, a sub-field of meteorology. Formally, a wider study includes water falling as ice crystals, i.e. hail, sleet, snow (parts of the hydrological cycle known as precipitation ). The aim of rainfall climatology is to measure, understand and predict rain distribution across different regions of ...
Probability of precipitation ( PoP) is a commonly used term referring to the likelihood of precipitation falling in a particular area over a defined period of time, which is commonly a day, half day, or hour. The PoP measure is meaningless unless it is associated with an interval of time. Forecasts commonly use PoP defined over 12-hour periods ...
Over the contiguous United States, total annual precipitation increased at an average rate of 6.1 percent per century since 1900, with the greatest increases within the East North Central climate region (11.6 percent per century) and the South (11.1 percent). Hawaii was the only region to show a decrease (−9.25 percent). [ 89]
An intensity-duration-frequency curve ( IDF curve) is a mathematical function that relates the intensity of an event (e.g. rainfall) with its duration and frequency of occurrence. [ 1] Frequency is the inverse of the probability of occurrence. These curves are commonly used in hydrology for flood forecasting and civil engineering for urban ...
Runoff curve number. The runoff curve number (also called a curve number or simply CN) is an empirical parameter used in hydrology for predicting direct runoff or infiltration from rainfall excess. [ 1] The curve number method was developed by the USDA Natural Resources Conservation Service, which was formerly called the Soil Conservation ...
August 8, 2024 at 11:30 AM. Five stations in Effingham County receive double-digit inches of rainfall from Tropical Storm Debby during a four-day span, the National Weather Services revealed ...
Delhi features a monsoon influenced humid subtropical climate ( Köppen Cwa) bordering a hot semi-arid climate ( Köppen BSh ), with high variation between summer and winter temperatures and precipitation. Delhi's version of a humid subtropical climate is markedly different from many other humid subtropical cities such as São Paulo, Houston ...
Hyetograph. A hyetograph is a graphical representation of the distribution of rainfall intensity over time. For instance, in the 24-hour rainfall distributions as developed by the Soil Conservation Service (now the NRCS or National Resources Conservation Service ), rainfall intensity progressively increases until it reaches a maximum and then ...
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