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An example of the reports available is this chart that shows the average surface temperature anomaly for the continental US for the period January 2005 to October 2023. [11] In this context anomaly is defined as a deviation from a trend established from historical observations of temperature. For this chart, the trend is expressed as zero ...
Temperature anomaly is the difference, positive or negative, of a temperature from a base or reference value, normally chosen as an average of temperatures over a certain reference or base period. In atmospheric sciences , the average temperature is commonly calculated over a period of at least 30 years over a homogeneous geographic region, or ...
AMOC-Index since 900 CE with pronounced slowdown since ~1850; Rahmstorf et al. (2015) [5] Climate scientists Michael Mann of Penn State and Stefan Rahmstorf from the Potsdam Institute for Climate Impact Research suggested that the observed cold pattern during years of temperature records is a sign that the Atlantic Ocean's Meridional overturning circulation (AMOC) may be weakening.
Data are provided as temperature anomalies against the seasonal average over a past basis period, as well as in absolute temperature values. The baseline period for the published temperature anomalies was changed in January 2021 from 1981-2010 to 1991-2020. [4] All the data products can be downloaded from the UAH server. [5]
The Blob is an anomalous body having sea surface temperature much above normal, seen here in a graphic of April 2014 by the NOAA.. The Blob is a large mass of relatively warm water in the Pacific Ocean off the coast of North America that was first detected in late 2013 and continued to spread throughout 2014 and 2015.
On January 5, Toronto broke a 59-year-old record with a morning low temperature of −23 °C (−9 °F) at the Pearson International Airport weather station. [ 18 ] On January 6, Raleigh–Durham International Airport in North Carolina set a record for the longest time spent below 32 °F (0 °C), 159 hours according to WTVD .
NOAA has released its seasonal outlook for the 2024-25 winter months, ... Maps show NOAA's winter outlook. Nikki Nolan, Elias Lopez ... Below-average temperatures are most likely in southern ...
For example, a commonly used baseline period is 1951-1980. Therefore, if the average temperature for that time period was 15 °C, and the currently measured temperature is 17 °C, then the temperature anomaly is +2 °C. Temperature anomalies are useful for deriving average surface temperatures because they tend to be highly correlated over ...