Journal of Climate

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The Early 1990s Change in ENSO–PSA–SAM Relationships and Its Impact on Southern Hemisphere Climate
Journal of Climate - Tập 28 Số 23 - Trang 9393-9408 - 2015
Jin‐Yi Yu, Houk Paek, E. S. Saltzman, Tong Lee
Abstract This study uncovers an early 1990s change in the relationships between El Niño–Southern Oscillation (ENSO) and two leading modes of the Southern Hemisphere (SH) atmospheric variability: the southern annular mode (SAM) and the Pacific–South American (PSA) pattern. During austral spring, while the PSA maintained a strong correlation with ENSO ...... hiện toàn bộ
A New Method for Temperature Spatial Interpolation Based on Sparse Historical Stations
Journal of Climate - Tập 31 Số 5 - Trang 1757-1770 - 2018
Chengdong Xu, Jinfeng Wang, Qingxiang Li
Long-term grid historical temperature datasets are the foundation of climate change research. Datasets developed by traditional interpolation methods usually contain data for a period of less than 50 yr, with a relatively low spatial resolution owing to the sparse distribution of stations in the historical period. In this study, the point interpolation based on Biased Sentinel Hospitals Ar...... hiện toàn bộ
Sea Ice Loss and Arctic Cyclone Activity from 1979 to 2014
Journal of Climate - Tập 30 Số 12 - Trang 4735-4754 - 2017
Tomoko Koyama, Julienne Strœve, John J. Cassano, Alex D. Crawford
Extensive summer sea ice loss has occurred within the Beaufort, Chukchi, East Siberian, and Laptev Seas over the last decade. Associated anomalies in sensible and latent heat fluxes in autumn have increased Arctic atmospheric precipitable water and air temperatures, with the potential to impact autumn and winter cyclone activity. To examine if a connection exists between recent Arctic sea...... hiện toàn bộ
Large-Scale Dynamics of the Meiyu-Baiu Rainband: Environmental Forcing by the Westerly Jet*
Journal of Climate - Tập 23 Số 1 - Trang 113-134 - 2010
Takeaki Sampe, Shang‐Ping Xie
Abstract Meiyu-baiu is the major rainy season from central China to Japan brought by a zonally elongated rainband from June to mid-July. Large-scale characteristics and environmental forcing of this important phenomenon are investigated based on a reanalysis dataset. The meiyu-baiu rainband is accompanied by a trough of sea level pressure, horizontal...... hiện toàn bộ
Northern Westerlies during the Last Glacial Maximum: Results from CMIP5 Simulations
Journal of Climate - Tập 31 Số 3 - Trang 1135-1153 - 2018
Na Wang, Dabang Jiang, Xianmei Lang
Abstract Based upon simulations from phase 5 of the Coupled Model Intercomparison Project (CMIP5), the vertical and regional characteristics of the northern westerlies during the Last Glacial Maximum (LGM) are investigated in this study. At the Northern Hemispheric scale, all nine available models simulate a poleward shift of the 200-hPa jet, and eig...... hiện toàn bộ
Multisource Estimation of Long-Term Terrestrial Water Budget for Major Global River Basins
Journal of Climate - Tập 25 Số 9 - Trang 3191-3206 - 2012
Ming Pan, Alok K. Sahoo, Tara J. Troy, R. K. Vinukollu, Justin Sheffield, Eric F. Wood
A systematic method is proposed to optimally combine estimates of the terrestrial water budget from different data sources and to enforce the water balance constraint using data assimilation techniques. The method is applied to create global long-term records of the terrestrial water budget by merging a number of global datasets including in situ observations, remote sensing retrievals, l...... hiện toàn bộ
Long-Range Niño-3.4 Predictions Using Pairwise Dynamic Combinations of Multiple Models
Journal of Climate - Tập 22 Số 3 - Trang 793-805 - 2009
Shahadat Chowdhury, Ashish Sharma
Abstract The interest in climate prediction has seen a rise in the number of modeling alternatives in recent years. One way to reduce the predictive uncertainty from any such modeling procedure is to combine or average the modeled outputs. Multiple model results can be combined such that the combination weights may either be static or vary over time....... hiện toàn bộ
Global Sea Surface Temperature Forecasts Using an Improved Multimodel Approach
Journal of Climate - Tập 27 Số 10 - Trang 3505-3515 - 2014
Zaved Khan, R. Mehrotra, Ashish Sharma, A. Sankarasubramanian
AbstractWith the availability of hindcasts or real-time forecasts from a number of coupled climate models, multimodel ensemble forecasting systems have gained popularity in recent years. However, many models share similar physics or modeling processes, which may lead to similar (or strongly correlated) forecasts. Assigning equal weights to each model in space and t...... hiện toàn bộ
Global Sea Surface Temperature Forecasts Using a Pairwise Dynamic Combination Approach
Journal of Climate - Tập 24 Số 7 - Trang 1869-1877 - 2011
Shahadat Chowdhury, Ashish Sharma
Abstract This paper dynamically combined three multivariate forecasts where spatially and temporally variant combination weights are estimated using a nearest-neighbor approach. The case study presented combines forecasts from three climate models for the period 1958–2001. The variables of interest here are the monthly global sea surface temperature ...... hiện toàn bộ
The Effect of Diurnal Sea Surface Temperature Warming on Climatological Air–Sea Fluxes
Journal of Climate - Tập 26 Số 8 - Trang 2546-2556 - 2013
Carol Anne Clayson, Alec S. Bogdanoff
Abstract Diurnal sea surface warming affects the fluxes of latent heat, sensible heat, and upwelling longwave radiation. Diurnal warming most typically reaches maximum values of 3°C, although very localized events may reach 7°–8°C. An analysis of multiple years of diurnal warming over the global ice-free oceans indicates that heat fluxes determined b...... hiện toàn bộ
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