Analysis of diurnal air temperature range change in the continental United States

Qu, Michael; Wan, Joe; Hao, Xianjun

doi:10.1016/j.wace.2014.05.002

Cited by 95 publications

(52 citation statements)

References 13 publications

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“…There is a good consistency in the DTR trends over Europe and Asia, but there is a big discrepancy over the continental US. The ERA Interim data shows a general increase in DTR over this period, whereas CRU has some increasing, but mostly decreasing trends in the DTR over the US, which is consistent with recent analysis of the DTR trends using an alternative observation dataset (Qu et al, ). However, the two datasets show a much greater agreement in the diurnal‐mean temperature.…”

Section: Datasets and Methodssupporting

confidence: 89%

Diurnal asymmetry to the observed global warming

et al. 2016

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ABSTRACT:The observed warming of the surface air temperature (SAT) over the last 50 years has not been homogenous. There are strong differences in the temperature changes both geographically and on different time frames. Here, we review the observed diurnal asymmetry in the global warming trend: the night-time temperatures have increased more rapidly than day-time temperatures. Several explanations for this asymmetric warming have been offered in the literature. These generally relate differences in the temperature trends to regionalized feedback effects, such as changes to cloud cover, precipitation or soil moisture. Here, we discuss a complementary mechanism through which the planetary boundary layer (PBL) modulates the SAT response to changes in the surface energy balance. This reciprocal relationship between boundary-layer depth and temperature response can explain a part of why the night-time has warmed more rapidly than the daytime. We used a multi-linear regression model to compare the effect of the PBL, cloud cover, precipitation and soil moisture on the SAT. From this, we demonstrate that it is the boundary-layer depth which is the strongest predictor of the strength of temperature trends in the boreal annual cycle, and in all seasons except the summer.

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Section: Datasets and Methodssupporting

confidence: 89%

Diurnal asymmetry to the observed global warming

et al. 2016

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“…Analogous fl uctuations have been established in other parts of the world as statistics are available, permitting more global analyses (Shahid, Harun & Ayob, 2012;Qua, Wan & Hao, 2014). However, in some zones the design has been different.…”

Section: Annual Temperature Discussionmentioning

confidence: 92%

Trends in mean maximum temperature, mean minimum temperature and mean relative humidity for Lautoka, Fiji during 2003–2013

Ghani

Iqubal²,

Prasad

et al. 2017

Przegląd Naukowy Inżynieria I Kształtowanie Środowiska

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The current work observes the trends in Lautoka’s temperature and relative humidity during the period 2003–2013, which were analyzed using the recently updated data obtained from Fiji Meteorological Services (FMS). Four elements, mean maximum temperature, mean minimum temperature along with diurnal temperature range (DTR) and mean relative humidity are investigated. From 2003–2013, the annual mean temperature has been enhanced between 0.02 and 0.080C. The heating is more in minimum temperature than in maximum temperature, resulting in a decrease of diurnal temperature range. The statistically significant increase was mostly seen during the summer months of December and January. Mean Relative Humidity has also increased from 3% to 8%. The bases of abnormal climate conditions are also studied. These bases were defined with temperature or humidity anomalies in their appropriate time sequences. These established the observed findings and exhibited that climate has been becoming gradually damper and heater throughout Lautoka during this period. While we are only at an initial phase in the probable inclinations of temperature changes, ecological reactions to recent climate change are already evidently noticeable. So it is proposed that it would be easier to identify climate alteration in a small island nation like Fiji.

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“…Also, some trends are decreasing while the others are increasing, for the different stations. This could be explained by the fact that fluctuations of the minimum temperature in mild-temperate climates during the year are mostly affected by the radiative characteristics of the underlying surface and cloudiness (Milosavljević 1990;Qu et al 2014 and references herein), i.e., depending on the location. The other important factor that influences the minimum temperature is the advection of the cold air, and in that sense, the results also confirm the conclusions from the IPCC 4 assessment report that Bit is Year Fig.…”

Section: Resultsmentioning

confidence: 99%

Complexity analysis of the air temperature and the precipitation time series in Serbia

Mimić

Mihailoviĉ

Kapor

2015

Theor Appl Climatol

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In this paper, we have analyzed the time series of daily values for three meteorological elements, two continuous and a discontinuous one, i.e., the maximum and minimum air temperature and the precipitation. The analysis was done based on the observations from seven stations in Serbia from the period 1951-2010. The main aim of this paper was to quantify the complexity of the annual values for the mentioned time series and to calculate the rate of its change. For that purpose, we have used the sample entropy and the Kolmogorov complexity as the measures which can indicate the variability and irregularity of a given time series. Results obtained show that the maximum temperature has increasing trends in the given period which points out a warming, ranged in the interval 1-2°C. The increasing temperature indicates the higher internal energy of the atmosphere, changing the weather patterns, manifested in the time series. The Kolmogorov complexity of the maximum temperature time series has statistically significant increasing trends, while the sample entropy has increasing but statistically insignificant trend. The trends of complexity measures for the minimum temperature depend on the location. Both complexity measures for the precipitation time series have decreasing trends.

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Analysis of diurnal air temperature range change in the continental United States

Cited by 95 publications

References 13 publications

Diurnal asymmetry to the observed global warming

Diurnal asymmetry to the observed global warming

Trends in mean maximum temperature, mean minimum temperature and mean relative humidity for Lautoka, Fiji during 2003–2013

Complexity analysis of the air temperature and the precipitation time series in Serbia

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