Search Results

You are looking at 21 - 30 of 22,019 items for :

  • Seasonal effects x
  • All content x
Clear All
Micah J. Hewer and William A. Gough

the past. These impacts corresponded to a temporal climate analog for the 2020s, 2050s, or 2080s, depending on a range of potential climate change impacts (RCP4.5–RCP8.5). Furthermore, the statistical significance of these historical effects and therefore the meaningfulness of potential future impacts were also presented by means of the P values associated with the tests of significant differences. 3. Results a. The effect of seasonal climatic anomalies 1) Winter Figure 2 presents the time

Open access
Scott D. Rudlosky and Henry E. Fuelberg

1. Introduction Cloud-to-ground (CG) lightning distributions are strongly influenced by seasonal and regional variations in atmospheric conditions. Thus, analysis of CG characteristics and their relation to specific changes in atmospheric conditions can help to better define the CG threat. Many studies have described CG variability on both the seasonal and regional scales; however, ambiguity still remains in the relationships between atmospheric conditions, storm-scale processes, and CG

Full access
Clara Deser, Robert Tomas, Michael Alexander, and David Lawrence

response to projected Arctic sea ice loss at the end of the twenty-first century than earlier studies, including aspects not previously addressed in detail such as seasonal dependence and vertical structure. For example, we document the full seasonal cycle of the three-dimensional circulation response to future Arctic sea ice loss. Another focus of our study is the terrestrial climate response to future Arctic sea ice loss, including effects on air temperature, precipitation, and snow depth. We also

Full access
Jian Li, Rucong Yu, and Tianjun Zhou

of different kinds of precipitation. Influenced by the East Asian monsoon, there are significant contrasts in the prevailing wind and water vapor supply between warm and cold seasons, in addition to the seasonal variation of solar radiation. Specific analysis and a comparison of the diurnal cycle in different seasons can offer clues for understanding the precipitation processes. In this study, the diurnal cycle of precipitation over southern contiguous China in all of the seasons are investigated

Full access
Katrina Grantz, Balaji Rajagopalan, Martyn Clark, and Edith Zagona

. Clark , and J. Pitlick , 2005 : Seasonal cycle shifts in hydroclimatology over the western United States. J. Climate , 18 , 372 – 384 . Reiter , E. R. , and M. Tang , 1984 : Plateau effects on diurnal circulation patterns. Mon. Wea. Rev. , 112 , 638 – 651 . Ropelewski , C. F. , and M. S. Halpert , 1986 : North American precipitation and temperature patterns associated with El Niño/Southern Oscillation (ENSO). Mon. Wea. Rev. , 114 , 2352 – 2362 . Sheppard , P. R. , A. C

Full access
Zhuo Wang, C-P. Chang, and Bin Wang

anomalies. Other possible sources of nonlinearity include the nonlinear topographic effects and nonlinear wave–wave interactions. The former play a role in maintaining the extratropical low-frequency patterns ( Hoerling and Ting 1994 ; Ting et al. 1996 , 2001 ; Ting and Yu 1998 ), and the latter modify the structure and location of the atmospheric response ( Kang and Held 1986 ; Hall and Derome 2000 ). In this study, we examine the impacts of ENSO on the U.S. climate during Northern summer. The El

Full access
J. Nalau, S. Becken, S. Noakes, and B. Mackey

(e.g., informed stocking of food and water), and lower costs for staff (optimized staffing schedules). Slightly longer-term forecasts (e.g., seasonal) assist in developing weather-adjusted product portfolios, diversification activities, and marketing. Issues, however, remain about the quality and type of weather and climate information and how it is communicated and distributed to and between different user groups ( de Freitas; 2003 ; Rutty and Andrey 2014 ; Wilson 2011 ; Zabini et al. 2015

Full access
G. R. McGregor, M. Cox, Y. Cui, Z. Cui, M. K. Davey, R. F. Graham, and A. Brookshaw

-range predictions are to be used as the basis for issuing early warnings about impending harsh winters and their related health effects, then, to be effective, a requirement of such warning systems will be availability of a well-designed and well-integrated set of implementable intervention measures ( Ebi et al. 2004 ). Without these measures, well-intentioned winter climate/health warnings will be rendered ineffective and the reduction of the burden of disease attributable to intraseasonal to seasonal climate

Full access
Caroline M. Dunning, Emily Black, and Richard P. Allan

1. Introduction Africa is acutely vulnerable to the effects of climate change. The large proportion of the population dependent upon rain-fed agriculture for their source of income and subsistence means that future changes in rainfall over Africa have high potential for detrimental socioeconomic consequences. In particular, the timing of the seasonal cycle determines the length of the growing season and agricultural yields ( Vizy et al. 2015 ) and affects the transmission period of a number of

Open access
Matthew G. Slocum, William J. Platt, Brian Beckage, Steve L. Orzell, and Wayne Taylor

. 2007a ; Slocum et al. 2007 ). Superimposed on these seasonal cycles are cycles of longer periodicity generated by climatic teleconnections. One of the most important teleconnections for fire is El Niño–Southern Oscillation (ENSO), whose effects on wildfires are conveyed by accentuating or diminishing the effects of seasonal climate ( Williams and Karoly 1999 ; Chu et al. 2002 ; Le Page et al. 2008 ). In south Florida, for example, the cool La Niña phase of ENSO intensifies drought during the dry

Full access