Northern Hemispheric Interannual Teleconnection Patterns and Their Changes Due to the Greenhouse Effect

Liang, Xin; Wang, Wei Chyung; Dudek, Michael P.

doi:10.1175/1520-0442(1996)009<0465:nhitpa>2.0.co;2

Cited by 16 publications

(8 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At this time, coupled models are associated with a large uncertainty in projecting future regional climate change, particularly when using one realization instead of multimodel and multiscenario ensemble. For instance, Campbell et al (1995) detected a western shift of the Azores high, Liang et al (1996) showed a general weakening of the NAO, Huth (1997) revealed a southward shift of the winter pattern of the NAO, and Paeth et al (1999) suggested a significant influence of the increase of CO 2 concentrations on the simulated NAO variability on time‐scales of 60 yr and longer. Therefore, further investigation using simulations with different models and scenarios is necessary for reducing the uncertainty of projected climate change in the North Atlantic.…”

Section: Summary and Discussionmentioning

confidence: 99%

The intensification and shift of the annual North Atlantic Oscillation in a global warming scenario simulation

Hu¹,

Wu²

2004

Tellus A

View full text Add to dashboard Cite

The impact of global warming on the annual North Atlantic Oscillation (NAO) is investigated with a global warming scenario simulation of the ECHAM4/OPYC3 coupled general circulation model. It is shown that the annual meridional pressure gradient over the North Atlantic is significantly strengthened, and the two centers of action of the NAO, the Icelandic low and the Azores high, are intensified and shifted northeastward by 10° to 20° in latitude and 30° to 40° in longitude in the global warming scenario. The shift of the centers of action leads to a failure in capturing the NAO change with the traditional definition of the NAO index. A modified index is introduced that allows for this shift, and exhibits a tendency toward the positive phase and an enhancement of its intensity. The intensification of Icelandic low is tied up with zonal mean state change, and the strengthened Azores high is related to the stationary wave change. The shift of the centers of action of the NAO is associated with the stationary wave change.

show abstract

Section: Summary and Discussionmentioning

confidence: 99%

The intensification and shift of the annual North Atlantic Oscillation in a global warming scenario simulation

Hu¹,

Wu²

2004

Tellus A

View full text Add to dashboard Cite

show abstract

“…The presented work uses a novel constraint of performance with respect to natural variability using 'frequency scaling'. However, the methodology for identification of natural clusters is based on previous work (Corti et al 1999;Liang et al 1996) with some modifications and is subject to further scrutiny. The monsoon standardized streamflow index (SSFI-4) used is assumed to be representative of drought and wet conditions since it depicts water supply availability.…”

Section: Discussionmentioning

confidence: 99%

Hydrologic Impacts of Climate Change: Quantification of Uncertainties

Raje¹,

Ghosh²,

Mujumdar³

2013

Climate Change Modeling, Mitigation, and Adaptation

View full text Add to dashboard Cite

Impacts of climate change on hydrology have been widely studied in recent literature. Of large relevance in hydrology is the quantification of uncertainties involved in hydrologic projections. It is also acknowledged that hydrologic analyses and designs using assumptions of stationarity are no longer valid because of nonstationarities introduced by climate change. In this chapter, a broad overview of uncertainty modeling and methodologies for uncertainty quantification in assessment of hydrologic impacts of climate change is provided. Various sources of uncertainties arising in the impact assessment process are presented. Case studies of quantification, combination and propagation of uncertainty in impact assessment are discussed.

show abstract

“…Similar cross correlations between the sites and the rest of the satellite record for the entire globe include positive and negative significantly correlated areas covering as much as 15% of the area of the globe. The areas of high positive correlation are found both contiguous with the observation site and globally disconnected suggestive of teleconnections [e.g., Wallace and Gutzler , 1981; Liang et al , 1996; Feldstein , 2000] among the atmospheric variables controlling the variations in S . Three different methods of determining the combined spatial representativeness of the five sites are investigated.…”

Section: Introductionmentioning

confidence: 99%

Decadal variations in surface solar irradiance as observed in a globally remote network

et al. 2006

View full text Add to dashboard Cite

[1] Twenty-eight years of surface solar irradiance observations at five remote climate observatories are analyzed for long-term temporal variations and spatial representativeness. Autocorrelated temporal variations are suggested in the annual mean irradiance records at some of the sites and in normalized anomaly records for various combinations of the surface sites. These variations are illustrated by first-, second-, and third-degree polynomials as well as by a sinusoidal fit, all of which are used as data smoothers not necessarily representative of any related physical processes, although some fits yield statistically significant coefficients. In general, there is an indication of a decreasing tendency in the early portion of the records and then an increasing tendency until toward the very end of the record. Variations among field sites are seen, with the one Arctic site showing the most departure from the others, with primarily a downward trend for most of the record. The spatial representativeness of each site's annual mean record is investigated using spatial cross correlation with satellite-derived global estimates of the surface solar irradiance. These cross correlations show significant correlations with relatively large areas both contiguous and noncontiguous with the sites.

show abstract

Northern Hemispheric Interannual Teleconnection Patterns and Their Changes Due to the Greenhouse Effect

Cited by 16 publications

References 23 publications

The intensification and shift of the annual North Atlantic Oscillation in a global warming scenario simulation

The intensification and shift of the annual North Atlantic Oscillation in a global warming scenario simulation

Hydrologic Impacts of Climate Change: Quantification of Uncertainties

Decadal variations in surface solar irradiance as observed in a globally remote network

Contact Info

Product

Resources

About