scholarly journals Changes in Daily and Monthly Surface Air Temperature Variability by Multi-Model Global Warming Experiments

2009 ◽  
Vol 87 (3) ◽  
pp. 513-524 ◽  
Author(s):  
Akio KITOH ◽  
Tomohiko MUKANO
Keyword(s):  
Global Warming ◽  
Air Temperature ◽  
Surface Air Temperature ◽  
Temperature Variability

scholarly journals Impact of Subsurface Temperature Variability on Surface Air Temperature Variability: An AGCM Study

2008 ◽  
Vol 9 (4) ◽  
pp. 804-815 ◽  
Author(s):  
Sarith P. P. Mahanama ◽  
Randal D. Koster ◽  
Rolf H. Reichle ◽  
Max J. Suarez
Keyword(s):  
Surface Temperature ◽  
Soil Temperature ◽  
Air Temperature ◽  
Seasonal Cycle ◽  
Surface Air Temperature ◽  
Temperature Variability ◽  
Climate System ◽  
Boreal Summer ◽  
Temperature Anomalies ◽  
Subsurface Soil

Abstract Anomalous atmospheric conditions can lead to surface temperature anomalies, which in turn can lead to temperature anomalies in the subsurface soil. The subsurface soil temperature (and the associated ground heat content) has significant memory—the dissipation of a temperature anomaly may take weeks to months—and thus subsurface soil temperature may contribute to the low-frequency variability of energy and water variables elsewhere in the system. The memory may even provide some skill to subseasonal and seasonal forecasts. This study uses three long-term AGCM experiments to isolate the contribution of subsurface soil temperature variability to variability elsewhere in the climate system. The first experiment consists of a standard ensemble of Atmospheric Model Intercomparison Project (AMIP)-type simulations in which the subsurface soil temperature variable is allowed to interact with the rest of the system. In the second experiment, the coupling of the subsurface soil temperature to the rest of the climate system is disabled; that is, at each grid cell, the local climatological seasonal cycle of subsurface soil temperature (as determined from the first experiment) is prescribed. Finally, a climatological seasonal cycle of sea surface temperature (SST) is prescribed in the third experiment. Together, the three experiments allow the isolation of the contributions of variable SSTs, interactive subsurface soil temperature, and chaotic atmospheric dynamics to meteorological variability. The results show that allowing an interactive subsurface soil temperature does, indeed, significantly increase surface air temperature variability and memory in most regions. In many regions, however, the impact is negligible, particularly during boreal summer.

scholarly journals The changes of precipitation in Podgorica for period 1951-2010

2011 ◽  
Vol 91 (2) ◽  
pp. 51-70
Author(s):  
Vladan Ducic ◽  
Dragan Buric ◽  
Jelena Lukovic ◽  
Gorica Stanojevic
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Air Temperature ◽  
Temperature Variability ◽  
Interannual Variations ◽  
Temperature And Precipitation ◽  
Precipitation Changes ◽  
Climatic Elements

The global warming and climate change are the actual and challenging topics. Recently there is one question, frequently asked: whether today's climate is changing? The studies of this issues are mainly related to the two the most important climatic elements - air temperature and precipitation amounts. We have done research about temperature variability for Montenegro and the main aim of this paper is analysis precipitation changes for station Podgorica (Montenegro) in the period of sistematic observation - are there changes, to what extent and whether they are significant. According to the results, acumulated precipitation do not show significant changes for annual and seasonal values in the period 1951-2010. The interannual variations of the precipitation (which are characterictic for this climate element) do not show increases in recent times. The component trend shows some changes, but statisticaly insignigficant. The previous results for precipitation conditions in Podgorica are not in accordance with the concept of Intergovermental Panel on Climate Change (IPCC) which predicted a general decerease in precipitation and increase variability on this area.

scholarly journals Spatially coherent late Holocene Antarctic Peninsula surface air temperature variability

Geology ◽  
2018 ◽  
Vol 46 (12) ◽  
pp. 1071-1074 ◽  
Author(s):  
Dan J. Charman ◽  
Matthew J. Amesbury ◽  
Thomas P. Roland ◽  
Jessica Royles ◽  
Dominic A. Hodgson ◽  
...  
Keyword(s):  
Air Temperature ◽  
Antarctic Peninsula ◽  
Late Holocene ◽  
Surface Air Temperature ◽  
Temperature Variability

scholarly journals Time scales of the European surface air temperature variability: The role of the 7–8 year cycle

2016 ◽  
Vol 43 (2) ◽  
pp. 902-909 ◽  
Author(s):  
Nikola Jajcay ◽  
Jaroslav Hlinka ◽  
Sergey Kravtsov ◽  
Anastasios A. Tsonis ◽  
Milan Paluš
Keyword(s):  
Time Scales ◽  
Air Temperature ◽  
Surface Air Temperature ◽  
Temperature Variability

scholarly journals Non-Stationary Frequency Analysis and Uncertainty of Heat Wave Events

2021 ◽  
Vol 21 (1) ◽  
pp. 301-310
Author(s):  
Jiyu Seo ◽  
Jeongeun Won ◽  
Jeonghyeon Choi ◽  
Okjeong Lee ◽  
Sangdan Kim
Keyword(s):  
Public Health ◽  
Climate Change ◽  
Global Warming ◽  
Energy Management ◽  
Heat Wave ◽  
Air Temperature ◽  
Frequency Analysis ◽  
Heat Waves ◽  
Surface Air Temperature ◽  
Return Periods

Due to global warming, there is an increasing concern regarding persistent and severe heat waves. The maximum daily surface air temperature observations show strong non-stationary features, and the increased intensity and persistence of heat wave events have been observed in many regions. The heat wave persistence day frequency (HPF) curve, which correlates the intensity of a heat wave persistence event for days with return periods, can be a useful tool to analyze the frequency of heat wave events. In this study, non-stationary HPF curves are developed to explain the trend in the increase of the surface air temperature due to climate change, and their uncertainty is analyzed. The non-stationary HPF model can be used in climate change adaptation management such as public health, public safety, and energy management.

Sign in / Sign up

Export Citation Format

Share Document