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Interpreting SSTA Results with Correlation [chapter]

Zeqin Wu, Philippe Maurine, Nadine Azemard, Gille Ducharme
2010 Lecture Notes in Computer Science  
With the help of this gate-to-gate delay correlation, differences between results of SSTA and those of Worst-case Timing Analysis (WTA) are interpreted.  ...  One of those arguments against the use is that results of SSTA are difficult to make use of for circuit design.  ...  What is more, with the help of this statistical dependency "gate-level correlation", differences between results of SSTA and those of WTA can be reasonably interpreted.  ... 
doi:10.1007/978-3-642-11802-9_6 fatcat:dd5ey5hcofebpbspiryns6p4jy

Adaptive Neuro–Fuzzy Inference System for Drought Forecasting in the Cai River Basin in Vietnam

Luong Bang Nguyen, Qiong Fang Li, Trieu Anh Ngoc, Kazuaki Hiramatsu
2015 Journal of the Faculty of Agriculture Kyushu University  
Furthermore, the ANFIS method with input variables constituting SSTA events can be successfully applied in order to establish accurate and reliable drought forecasting models.  ...  This paper presents the correlations between sea surface temperature anomalies (SSTA) and both the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI  ...  The correlation matrix results between SSTA and SPI/SPEI presented in Fig. 2 show that the correlation between SSTA and SPI is greater than the correlation between SSTA and SPEI.  ... 
doi:10.5109/1543403 fatcat:zsytu75x7ncn5p6igr3ae2ps3e

The Modulating Influence of Indian Ocean Sea Surface Temperatures on Australian Region Seasonal Tropical Cyclone Counts

H. A. Ramsay, M. B. Richman, L. M. Leslie
2017 Journal of Climate  
results consistent with observed TCC modulation.  ...  Overall, TIOD outperforms Niño-4 SSTA as a TCC predictor (46% skill increase since about 1998), when used individually or with Niño-4.  ...  The Niño-4 SSTA is correlated with Pacific RPC 2 at jrj 5 0.67 ( p , 0.01) (Fig. 4b) , and the time series of RPC 3 is correlated with the Niño-3.4 SSTA at jrj 5 0.62 (p , 0.01) (Fig. 4c) .  ... 
doi:10.1175/jcli-d-16-0631.1 fatcat:dydcbjupkzd7fnq7xealye5i6a

Cross-correlation Analysis Between Sea Surface Temperature Anomalies and Several Climate Elements in The Indian Ocean

Fanny Oktaviani, Miftahuddin, Ichsan Setiawan
2021 Parameter: Journal of Statistics  
The results showed that using the Pearson correlation, the highest relationship was SSTA and the air temperature was 0.45. Meanwhile, the lowest relationship was SSTA and the rainfall was -0.05.  ...  One of the methods used to look at SSTA's relationship with some climate elements is the Cross-Correlation method. The climate data used in this study was a daily time series data.  ...  Figure 3 . 3 Cross-correlation (a) SSTA and Temperature, (b) SSTA and Air Rainfall, (c) SSTA and Wind Speed, (d) SSTA and ShortWaver Solar Radiation, (e) SSTA and Relative Humidity 2016, resulting in a  ... 
doi:10.22487/27765660.2021.v1.i1.15354 fatcat:kjx3doqyc5firevkio6j6n5rdu

Bimodality and regime behavior in atmosphere–ocean interactions during the recent climate change

Bijan Fallah, Sahar Sodoudi
2015 Dynamics of atmospheres and oceans (Print)  
Furthermore, we suggest that Isomap, compared with MCA, provides more information about the behavior and predictability of the inter-seasonal atmosphere-ocean interactions.  ...  Strengthening of trade winds over Pacific was coincident with the cold phase of east equatorial Pacific. This pattern was reversed during the warm phase of east equatorial Pacific.  ...  The advantage of MCA, compared with coupled EOF analysis, is that this method captures those modes of variations which are highly coupled. Thus, the interpretation of the results are easier.  ... 
doi:10.1016/j.dynatmoce.2015.02.002 fatcat:ijkev4optjbxdh44jlp2reoove

Detecting the relationship between summer rainfall anomalies in eastern china and the SSTA in the global domain with a new significance test method

Chuhan Lu, Zhaoyong Guan, Panxing Wang, Mingkeng Duan
2009 Journal of Ocean University of China  
Our results demonstrate that the contemporaneous correlations of summer R in CHRV with the SSTA are larger than those in NC.  ...  Significant correlations of SSTA with CHRV R are found to be in some warm SST regions in the tropics, whereas those of SSTA with NC R, which are opposite in sign as compared to the SSTA-CHRV R correlations  ...  The results suggest that 1) NC and CHRV summer R are significantly/contemporaneously correlated with global SSTA, and the correlation for CHRV is stronger than that for NC.  ... 
doi:10.1007/s11802-009-0015-y fatcat:no4uf4jagza53m2nyufummnroa

Tropical Atmosphere–Ocean Interactions in a Conceptual Framework

Malte F. Jansen, Dietmar Dommenget, Noel Keenlyside
2009 Journal of Climate  
Results also show that Indian Ocean interaction with ENSO tends to damp the ENSO oscillation and is responsible for a frequency shift to shorter periods.  ...  Equatorial Atlantic variability is well described by the recharge oscillator model, with an oscillatory mixed ocean dynamics-sea surface temperature (SST) mode present in boreal spring and summer.  ...  The somewhat negative result for the Indian Ocean may raise some questions on how this should be interpreted.  ... 
doi:10.1175/2008jcli2243.1 fatcat:es7kwqnqszchbbacqzuclvws2i

Sensitivity of seasonal climate forecasts to persisted SST anomalies

Goddard L., Mason S.
2002 Climate Dynamics  
Thus, it is argued that seasonal-to-interannual forecasts using AGCMs should be interpreted relative to historical runs that were subject to the same strategy of boundary forcing used in the current forecast  ...  Most estimates of the skill of atmospheric general circulation models (AGCMs) for forecasting seasonal climate anomalies have been based on simulations with actual observed sea surface temperatures (SSTs  ...  This result is consistent with the climatological evolution of SSTA variance patterns ( Fig. 7) .  ... 
doi:10.1007/s00382-002-0251-y fatcat:a2kijgrxnnblbmcy7yg6otkesu

Seasonality of Large-Scale Atmosphere–Ocean Interaction over the North Pacific

Yuan Zhang, Joel R. Norris, John M. Wallace
1998 Journal of Climate  
Yet despite this apparent lack of memory, a well-defined pattern of summertime and autumn SSTAs exhibits significant correlations with the sea level pressure field over the North Pacific a season later  ...  The mixing exposes waters that were last in contact with the surface during the previous spring. Hence, SSTAs at fixed locations exhibit little memory from summer to the next winter.  ...  Namias and Born (1970) interpreted their results as indicating that SST anomaly patterns are more persistent during winter than during summer, but what they actually examined was the persistence of SSTAs  ... 
doi:10.1175/1520-0442(1998)011<2473:solsao>;2 fatcat:jxnrt7xgorchtececqtiqa5lgq

Sea surface temperature inter-hemispheric dipole and its relation to tropical precipitation

Cheng Sun, Jianping Li, Fei-Fei Jin, Ruiqiang Ding
2013 Environmental Research Letters  
The observed SSTID and its relation to the tropical rainfall are realistically reproduced in a control simulation with the UKMO-HadCM3 climate model.  ...  Results from the UKMO-HadCM3 simulation suggest that the SSTID is related to the variability of the global ocean northward cross-equatorial heat transport.  ...  with negative SH SSTA and vice versa.  ... 
doi:10.1088/1748-9326/8/4/044006 fatcat:cqsxfbqh45ffbnb4cn2u5cevne

Page 140 of Journal of Climate Vol. 20, Issue 1 [page]

2007 Journal of Climate  
(a) Correlation between Nifio-3 and Atlantic3 SSTAs for the different calendar months. (b) Cross correlation between Nino-3 and Atlantic3 averaged SSTA.  ...  The results presented here should provided a basis for interpreting the Pacif- ic-Atlantic interactions. In particular, the strong sea-  ... 

Interannual SST variability in the Japan/East Sea and relationship with environmental variables

Sunghyea Park, Peter C. Chu
2006 Journal of Oceanography  
The correlation map is therefore appropriate to interpret the relationship of one variable (n-th mode SSTA) to the others arranged with background fields geographically.  ...  Such an eastward reduction pattern of SSTA standard deviation agrees with Park and Oh's (2000) results on the first EOF mode of filtered SSTA.  ... 
doi:10.1007/s10872-006-0038-6 fatcat:cgb4myqxlbfvfadonkipvcwxhq

An Upper Limit to Seasonal Rainfall Predictability?

Seth Westra, Ashish Sharma
2010 Journal of Climate  
The asymptotic predictability of global land surface precipitation is estimated empirically at the seasonal time scale with lead times from 0 to 12 months.  ...  This estimate was derived based on concurrent SSTA-precipitation relationships and therefore constitutes the maximum skill achievable assuming perfect forecasts of the evolution of the SSTA field.  ...  Correlation coefficients, rather than eigenvectors, are presented because of the ease of interpretation and the direct relationship between correlation coefficients and the variance accounted for by each  ... 
doi:10.1175/2010jcli3212.1 fatcat:k23lv32wtff6zeggwx5a7lrzkm

Contrasting the termination of moderate and extreme El Niño events in coupled general circulation models

Matthieu Lengaigne, Gabriel A. Vecchi
2009 Climate Dynamics  
Interpreting these propagation changes as evidence of changes in the underlying dynamical feedbacks behind El Niño could therefore be misleading, given the strong influence of a single extreme event.  ...  Further, due to their unusual termination, extreme El Niño events exhibit an apparent eastward propagation of their SSTA, which can strongly influence estimates of the apparent propagation of ENSO over  ...  Fig. 9 9 Eight-month lagged correlation of the Trans-Niño Index (TNI) with the normalized Niño34 SSTA over 1940-1995 period.  ... 
doi:10.1007/s00382-009-0562-3 fatcat:pjgpr53t65ebxnmyic72j6d5ym

Local Coupled Equatorial Variability versus Remote ENSO Forcing in an Intermediate Coupled Model of the Tropical Atlantic

Serena Illig, Boris Dewitte
2006 Journal of Climate  
The results of coupled experiments with or without Pacific ENSO forcing and with or without explicit air-sea interactions in the equatorial Atlantic indicate that the background energy in the equatorial  ...  Seasonal phase locking in boreal summer is also the result of the local coupling.  ...  The authors are particularly indebted to fruitful discussions with Dr. S. E. Zebiak at the early stage of this study and to the thoughtful review of the manuscript by Dr. D. Neelin.  ... 
doi:10.1175/jcli3922.1 fatcat:5ohnt5yblvcmzknhgouoxkjdpy
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