Long memory, seasonality and time trends in the average monthly temperatures in Alaska

Gil-Alana, Luís A.

doi:10.1007/s00704-011-0539-0

Cited by 24 publications

(16 citation statements)

References 59 publications

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“…At a local scale, there exist various studies addressing the effects of the climate variability taking into account the long-memory properties of time series. This is the case of Gil-Alana (2003), for the study of the monthly Central England Temperature (CET) series; Caballero et al (2002), for the multidecadal daily time series from CET, Chicago and Los Angeles; Gil-Alana (2010), for the monthly mean, maximum and minimum temperatures in specific locations in Spain and Portugal;Franzke (2012), for the daily temperatures from four stations: central England, Stockholm (Sweden), Faraday-Vernadsky (Antarctic Peninsula) and Alert (Canada), Percival et al (2001) and Gil-Alana (2012), for monthly temperatures in Alaska; Kane and Usman (2013) for the Sokoto metropolits in Nigeria, or Franzke (2010), Bunde et al (2014), andLudescher et al (2016), for monthly temperatures of different stations of Antarctica.…”

Section: Introductionmentioning

confidence: 99%

US temperatures: Time trends and persistence

Gil-Alana

Sauci

2019

Intl Journal of Climatology

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This paper investigates the time trend coefficients in the temperatures in 48 US states using monthly data from January 1895 to December 2017, as well as in their anomalies with respect to the base period 1901–2000. For this purpose, we use techniques based on fractional integration, which is a more general approach than the standard methods used in the literature based on integer differentiation. The results indicate that with the exception of 10 states, in the remaining 38, the temperature anomalies have increased across time, with the increase being higher than the one expected under the other more standard approaches. The highest increases correspond to New Jersey and Rhode Island, with an increase of approximately 2.9°C over the last 100 years.

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Section: Introductionmentioning

confidence: 99%

US temperatures: Time trends and persistence

Gil-Alana

Sauci

2019

Intl Journal of Climatology

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“…More recently Gil-Alana [7] discussed memory, seasonality and trends based on monthly mean temperatures of Alaska.…”

Section: Introductionmentioning

confidence: 99%

The First Decade of the New Century: A Cooling Trend for Most of Alaska

Wendler¹,

Chen²,

Moore³

2012

TOASCJ

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During the first decade of the 21st century most of Alaska experienced a cooling shift, modifying the long-term warming trend, which has been about twice the global change up to this time. All of Alaska cooled with the exception of Northern Regions. This trend was caused by a change in sign of the Pacific Decadal Oscillation (PDO), which became dominantly negative, weakening the Aleutian Low. This weakening results in less relatively warm air being advected from the Northern Pacific. This transport is especially important in winter when the solar radiation is weak. It is during this period that the strongest cooling was observed. In addition, the cooling was especially pronounced in Western Alaska, closest to the area of the center of the Aleutian Low. The changes seen in the reanalyzed data were confirmed from surface observations, both in the decrease of the North-South atmospheric pressure gradient, as well as the decrease in the mean wind speeds for stations located in the Bering Sea area.

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“…Many publications document an increase in air temperature at many weather stations in Alaska and for many different periods of time starting in the early twentieth century (Stafford et al 2000;Wendler and Shulski 2009;Wendler et al 2010a;Gil-Alana 2012;Bieniek et al 2014;Wendler et al 2016). Bieniek et al (2014) estimated that a statewide average warming of about 1°C occurred in the years 1920-2012; however, tendencies varied in sign and magnitude depending on the climate division, time of year, and particular 30-year sub-periods.…”

Section: Introductionmentioning

confidence: 99%

Temperature extremes in Alaska: temporal variability and circulation background

Sulikowska

Walawender

2018

Theor Appl Climatol

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The aims of this study are to characterize the spatial and temporal variability of extremely warm days (WDs) and warm spells (WSs) in summer as well as extremely cold days (CDs) and cold spells (CSs) in winter in Alaska in the years 1951-2015 and to determine the role of atmospheric circulation in their occurrence. The analysis is performed using daily temperature maxima (T MAX ) and minima (T MIN ) measured at 10 weather stations in Alaska as well as mean daily values of sea level pressure and wind direction at the 850 hPa isobaric level.WD (CD) is defined as a day with T MAX above the 95th (T MIN below the 5th) percentile of a probability density function calculated from observations, and WS (CS) equals at least three consecutive WDs (CDs). Frequency of the occurrence and severity of warm and cold extremes as well as duration of WSs and CSs is analyzed. In order to characterize synoptic conditions during temperature extremes, the objective classification scheme of advection types considering jointly the direction of the air influx and type of pressure system is employed.The results show that the general trend is towards the warmer temperatures, and the warming is greater in the winter than summer and for T MAX as opposed to T MIN . This is reflected in changes in the frequency of occurrence and intensity of temperature extremes which are much more pronounced in the case of winter cold extremes (decreasing tendencies) than summer warm extremes (increasing tendencies).The occurrence of temperature extremes is generally favored by anticyclonic weather with advection direction indicating air mass flows from the interior of the North American continent as well as the south (warm extremes in summer) and north (cold extremes in winter).

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Long memory, seasonality and time trends in the average monthly temperatures in Alaska

Cited by 24 publications

References 59 publications

US temperatures: Time trends and persistence

US temperatures: Time trends and persistence

The First Decade of the New Century: A Cooling Trend for Most of Alaska

Temperature extremes in Alaska: temporal variability and circulation background

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