Changes in the metastability of the Southern Hemisphere 500-hPa circulation are examined using both cluster analysis techniques and split-flow blocking indices. The cluster methodology is a purely data-driven approach for parameterization whereby a multiscale approximation to nonstationary dynamical processes is achieved through optimal sequences of locally stationary fast vector autoregressive factor (VARX) processes and some slow (or persistent) hidden process switching between them. Comparison is made with blocking indices commonly used in weather forecasting and climate analysis to identify dynamically relevant metastable regimes in the 500-hPa circulation in both reanalysis and Atmospheric Model Intercomparison Project (AMIP) datasets. The analysis characterizes the metastable regime in both reanalysis and model datasets prior to 1978 as positive and negative phases of a hemispheric midlatitude blocking state with the southern annular mode (SAM) associated with a transition state. Post-1978, the SAM emerges as a true metastable state replacing the negative phase of the hemispheric blocking pattern. The hidden state frequency of occurrences exhibits strong trends. The blocking pattern dominates in the early 1980s, and then gradually decreases. There is a corresponding increase in the SAM frequency of occurrence. This trend is largely evident in the reanalysis summer and spring but was not evident in the AMIP dataset. Further comparison with the split-flow blocking indices reveals a superficial correspondence between the cluster hidden state frequency of occurrences and split-flow indices. Examination of composite states shows that the blocking indices capture splitting of the zonal flow whereas the cluster composites reflect coherent block formation. Differences in blocking climatologies from the respective methods are discussed.
recently a well-known hostess Ying Cao once announced to participate in the variety show "the second time" in the interview, Ying Cao blew not regret to quit, may also consider the second child in the future.
1 5 afternoon, Ying Cao in an interview revealed that he is considering "two children", and even joked "for a prince to Tim children before the age of 50". For everyone hot to leave CCTV switch to Hunan and other initiatives, Ying Cao said he did not regret.
Privacy exposure of the child is also hesitant
for together with their children on the show, a lot of people have concerns, worried about their children early exposure would lack of privacy. Especially as a public figure of the child, whether good or bad are easy to be over enlarged, will not worry about the impact of the child’s growth?. "At the beginning, I did not allow the children to be on the show, but with the advent of a lot of programs, I thought we wanted more. Children can participate in the program is more than a growth experience, in fact, is a good thing."
as entertainment rare low-key couple, Ying Cao and Ban Wang from love to children has not announced a high-profile, even marriage are not for the ceremony, to participate in the "second time" was the first to show their family life. Why so low? When talking about this issue, Ying Cao explained that he is "the sun’s sun baby spree, just a couple characters are relatively indifferent, do not attach much importance to many ceremony.
"did a lot of people have said we are too low-key, in fact, two of us actually not intentionally, we can only say two characters are relatively indifferent. There had been no wedding, in fact is playing too much, I both ‘in the opera "marriage several times, Chinese and western have, if the reality also do the ceremony or feel old in acting, but one family together to eat a meal, travel together, let us feel more like is’ married’, so naturally there has been no big."