Effects of 4-dimension variational data assimi-lation (4DVAR) with multifold observed data on the typhoontrack forecast are studied, by using the MM5V3 model, theRTTOVS-5 model and their adjoint models. The data usedf...Effects of 4-dimension variational data assimi-lation (4DVAR) with multifold observed data on the typhoontrack forecast are studied, by using the MM5V3 model, theRTTOVS-5 model and their adjoint models. The data usedfor assimilation include large-scale background fields data,bogus data, cloud-derived wind data, satellite inverse data,and high resolution infrared radiation sounder data (HIRS).There are 5 typhoon cases are used to perform the numericalexperiments and assimilation experiments. The numericalresults show that with 4DVAR the initial fields can be greatlyimproved and the initial typhoon structure can be clearlydescribed.展开更多
Summary of main observation and conclusion There are active debates on whether the concept of aromaticity should be exte nded bey ond carb on based organic systems. One argument against such extension is that the prop...Summary of main observation and conclusion There are active debates on whether the concept of aromaticity should be exte nded bey ond carb on based organic systems. One argument against such extension is that the proposed new aromatic species are not bottleable. We present herein in-depth chemical bonding analyses of a synthetic, core-shell, intermetalloid [Pd3Sn8Bi6]^4-.cluster. The computational data unravel unprecedented five-fold (π and σ) aromaticity, in cludi ng d-orbital aromaticity. Delocalized electr on clouds in this all-metal system cover the Pd3 core, trigonal pyramid Sn4 caps, peripheral Bi6 ring, and roof-like Sn2Bi2 walls, each following the (4n+2) Huckel rule. The present finding is beyond imagination, providing a compelling example that all-metal aromaticity not only exists in bulk compounds, but also can be in multifold π/σ fashion.展开更多
文摘Effects of 4-dimension variational data assimi-lation (4DVAR) with multifold observed data on the typhoontrack forecast are studied, by using the MM5V3 model, theRTTOVS-5 model and their adjoint models. The data usedfor assimilation include large-scale background fields data,bogus data, cloud-derived wind data, satellite inverse data,and high resolution infrared radiation sounder data (HIRS).There are 5 typhoon cases are used to perform the numericalexperiments and assimilation experiments. The numericalresults show that with 4DVAR the initial fields can be greatlyimproved and the initial typhoon structure can be clearlydescribed.
基金the National Natural Science Foundation of China (Nos. 21873058, 21573138)the Sanjin Scholar Distinguished Professors Program.
文摘Summary of main observation and conclusion There are active debates on whether the concept of aromaticity should be exte nded bey ond carb on based organic systems. One argument against such extension is that the proposed new aromatic species are not bottleable. We present herein in-depth chemical bonding analyses of a synthetic, core-shell, intermetalloid [Pd3Sn8Bi6]^4-.cluster. The computational data unravel unprecedented five-fold (π and σ) aromaticity, in cludi ng d-orbital aromaticity. Delocalized electr on clouds in this all-metal system cover the Pd3 core, trigonal pyramid Sn4 caps, peripheral Bi6 ring, and roof-like Sn2Bi2 walls, each following the (4n+2) Huckel rule. The present finding is beyond imagination, providing a compelling example that all-metal aromaticity not only exists in bulk compounds, but also can be in multifold π/σ fashion.
