Results 71 to 80 of about 66,400 (301)

U.S. East Coast Trough Indices at 500 hPa and New England Winter Climate Variability [PDF]

, 2002
Using monthly gridded 500-hPa data, two synoptic indices are defined to better understand the principle mechanisms controlling intraseasonal to multiannual winter climate variability in NewEngland (NE).
Bradbury, James A, Keim, Barry D, Wake, Cameron P   +2 more
core   +2 more sources

The North Atlantic Oscillation and European vegetation dynamics [PDF]

International Journal of Climatology, 2008
AbstractThe relationship between vegetation greenness and the North Atlantic Oscillation (NAO) is assessed over Europe. The study covers the 21‐year period from 1982 to 2002 and is based on monthly composites of the Normalised Difference Vegetation Index (NDVI) and Brightness Temperature from the Global Inventory Monitoring and Modelling System (GIMMS)
Gouveia, Célia, Trigo, Ricardo M., Camara, Carlos C., Libonati, Renata, Pereira, J.M.C.   +4 more
openaire   +2 more sources

Seasonal Predictions and Their Applications in the Mediterranean Region: Part I—Sources of Predictability and Prediction Skill

International Journal of Climatology, EarlyView.
The ability to predict climate fluctuations at seasonal timescales offers significant socio‐economic benefits. However, limited understanding of predictability mechanisms and model errors hinders forecast quality. Recent research has improved forecasting systems and data quality.
Gualdi Silvio, Javier García‐Serrano, Constantin Ardilouze, Silvia Terzago, Veronica Torralba, Wafae Badi, Lauriane Batté, Fatima Driouech, Kristina Fröhlich, Ernesto Rodriguez Camino, Esteban Rodriguez Guisado, Massimiliano Pasqui, Andrea Toreti   +12 more
wiley   +1 more source

Scaling Analysis and Evolution Equation of the North Atlantic Oscillation Index Fluctuations [PDF]

, 2004
The North Atlantic Oscillation (NAO) monthly index is studied from 1825 till 2002 in order to identify the scaling ranges of its fluctuations upon different delay times and to find out whether or not it can be regarded as a Markov process.
Hurst H. E., Kolmogorov A. N., Kolmogorov A. N., Mandelbrot B. B., Parisi G., Pecseli H. L., Turcotte D. L., Wallace J. M.   +7 more
core   +1 more source

The North Atlantic Oscillation: Past, present, and future [PDF]

Proceedings of the National Academy of Sciences, 2001
The climate of the Atlantic sector exhibits considerable variability on a wide range of time scales. A substantial portion is associated with the North Atlantic Oscillation (NAO), a hemispheric meridional oscillation in atmospheric mass with centers of action near Iceland and over the subtropical Atlantic.
M H, Visbeck, J W, Hurrell, L, Polvani, H M, Cullen   +3 more
openaire   +2 more sources

Heat and Cold Waves in Brazil: An ERA5‐Based Analysis of Trends and Seasonality (1980–2024)

International Journal of Climatology, EarlyView.
This study uses ERA5 reanalysis data to assess changes in extreme heat and cold events across Brazil from 1980 to 2024. Results reveal a sharp increase in heatwave frequency and a general decline in coldwave occurrences, though regional variations are substantial.
Alindomar Lacerda Silva, Scott Sheridan
wiley   +1 more source

A multivariate probabilistic framework for tracking the regional tropical edges: analysis of inter-annual variations and long-term trends

Environmental Research Letters
In the present study, a multivariate probabilistic framework is used to identify the meridional positions of regional tropical edges (RTEs), which are based on two variables: sea level pressure and precipitation minus evaporation. This new defined metric
Xinxian Feng, Weichen Tao, Gang Huang, Yongyun Hu, William K M Lau, Xia Qu, Kaiming Hu, Ya Wang   +7 more
doaj   +1 more source

Ocean impact on decadal Atlantic climate variability revealed by sea-level observations [PDF]

, 2015
Decadal variability is a notable feature of the Atlantic Ocean and the climate of the regions it influences. Prominently, this is manifested in the Atlantic Multidecadal Oscillation (AMO) in sea surface temperatures. Positive (negative) phases of the AMO
AH Sallenger Jr, BB Booth, C Wunsch, CO Iselin, CS Bretherton, CS Meinen, DA Smeed, DL Hodson, GD McCarthy, HL Bryden, J Marshall, J Robson, J Yin, JD Boon, JP Grist, P Thompson, R Montgomery, R Zhang, RJ Bingham, RT Sutton, S Gulev, S Häkkinen, S Østerhus, SB Goldenberg, T Ezer, T Kanzow, TL Delworth, W Ebisuzaki, W Sturges, WE Johns, X Chen   +30 more
core   +3 more sources

Seasonal Variability of Precipitating Systems in Four Radar Domains of Northeast Brazil

International Journal of Climatology, EarlyView.
This study analyzes the climatology and evaluates how the physical aspects of precipitating systems are influenced by the dry and wet seasons in Northeast Brazil, highlighting seasonal variations in the frequency, size, intensity, and duration of these systems in the regions of Natal, Maceió, Petrolina, and Salvador.
Amanda Carolina da Silva Queiroz, Thiago Souza Biscaro   +1 more
wiley   +1 more source

A nonstationary ENSO-NAO relationship due to AMO modulation [PDF]

, 2019
Many previous studies have demonstrated a high uncertainty in the relationship between the El Niño-Southern Oscillation (ENSO) and North Atlantic Oscillation (NAO). In the present work, decadal modulation by the Atlantic Multidecadal Oscillation (AMO) is
Geng, Xin, Jin, Fei-Fei, Mei, Xuebin, Turner, Andrew G., Zhang, Wenjun   +4 more
core   +1 more source