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Season creep was included in the 9th edition of the Collins English Dictionary published in London June 4, 2007. [38] [39] The term was popularized in the media after the report titled "Season Creep: How Global Warming Is Already Affecting The World Around Us" was published by the American environmental organization Clear the Air on March 21, 2006. [40]
A rather new hypothesis is a link between residence time of water and seasonal stratification in monomictic lakes leading to eutrophication. Increased residence time leads to longer periods of stratification, reduced water mixing, and increased eutrophication in the epilimnion.
When nights are short, an excess amount of Pfr remains in the day time and during long nights, most of the Pfr is reverted to Pr. In 1920, W. W. Garner and H. A. Allard published their discoveries on photoperiodism and felt it was the length of daylight that was critical, [ 1 ] [ 2 ] but it was later discovered that the length of the night was ...
There is a seasonal cycle of thermal stratification with two periods of mixing in spring and fall. Such lakes are termed "dimictic'. During summer there is a strong thermal stratification, while there is a weaker inverse stratification in winter.
While a seasonal pattern occurs when a time series is affected by the season or the time of the year, such as annual, semiannual, quarterly, etc. A cyclic pattern , or simply a cycle , occurs when the data exhibit rises and falls in other periods, i.e., much longer (e.g., decadal ) or much shorter (e.g., weekly ) than seasonal.
A seasonal pattern exists when a time series is influenced by seasonal factors. Seasonality occurs over a fixed and known period (e.g., the quarter of the year, the month, or day of the week). [1], the irregular component (or "noise") at time t, which describes random, irregular influences. It represents the residuals or remainder of the time ...
Ocean stratification is the natural separation of an ocean's water into horizontal layers by density. This is generally stable stratification , because warm water floats on top of cold water, and heating is mostly from the sun, which reinforces that arrangement.
For example, several studies have reported a correlation between earlier spring bloom onset and temperature increases over time. [3] Furthermore, in Long Island Sound and the Gulf of Maine, blooms begin later in the year, are more productive, and last longer during colder years, while years that are warmer exhibit earlier, shorter blooms of ...