In this study, the ability of dynamical downscaling for reduction of artificial climate trends in global reanalysis is tested in China. Dynamical downscaling is performed using a 60-km horizontal resolution Regional I...In this study, the ability of dynamical downscaling for reduction of artificial climate trends in global reanalysis is tested in China. Dynamical downscaling is performed using a 60-km horizontal resolution Regional Integrated Environmental Model System （RIEMS） forced by the NCEP-Department of Energy （DOE） reanalysis II （NCEP-2）. The results show that this regional climate model （RCM） can not only produce dynamically consis- tent fine scale fields of atmosphere and land surface in the regional domain, but it also has the ability to minimize artificial climate trends existing in the global reanalysis to a certain extent. As compared to the observed 2-meter temperature anomaly averaged across China, our model can simulate the observed inter-annual variation and variability as well as reduce artificial climate trends in the reanalysis by approximately 0.10℃ decade-1 from 1980 to 2007. The RIEMS can effectively reduce artificial trends in global reanalysis for areas in western China, especially for regions with high altitude mountains and deserts, as well as introduce some new spurious changes in other local regions. The model simulations overesti- mated observed winter trends for most areas in eastern China with the exception of the Tibetan Plateau, and it greatly overestimated observed summer trends in the Si- chuan Basin located in southwest China. This implies that the dynamical downscaling of RCM for long-term trends has certain seasonal and regional dependencies due to imperfect physical processes and parameterizations.展开更多
This work aims to verify how the Web portals of Universities Hospital located in the northeast of Brazil are contributing to the expansion of knowledge of its users from the analysis of interactive features associated...This work aims to verify how the Web portals of Universities Hospital located in the northeast of Brazil are contributing to the expansion of knowledge of its users from the analysis of interactive features associated with the three mechanisms of knowledge management： knowledge access （KA）, knowledge creation （KC）, and knowledge transfer （KT）. The study is exploratory, descriptive, and qualitative type, such as a survey, developed through an adaptation of a relevant research, which involves the standardization of data collection instruments （questionnaires and interviews） applied directly to persons of a specific population, to assess knowledge management tools present in the University Hospital portals in the northeast region of Brazil. The results indicated that the resources from knowledge access were more prevalent than the others, ratifying the results found in research developed in Asian and North American Hospital portals.展开更多
基金supported by the Knowledge Innovation Program of the Chinese Academy of Sciences(Grant No. KGCX2-YW-356)the R & D Special Fund for Public Welfare Industry (Meteorology) (Grant No. GYHY201006023)the National Natural Science Foundation of China (Grant No.40805032)
文摘In this study, the ability of dynamical downscaling for reduction of artificial climate trends in global reanalysis is tested in China. Dynamical downscaling is performed using a 60-km horizontal resolution Regional Integrated Environmental Model System （RIEMS） forced by the NCEP-Department of Energy （DOE） reanalysis II （NCEP-2）. The results show that this regional climate model （RCM） can not only produce dynamically consis- tent fine scale fields of atmosphere and land surface in the regional domain, but it also has the ability to minimize artificial climate trends existing in the global reanalysis to a certain extent. As compared to the observed 2-meter temperature anomaly averaged across China, our model can simulate the observed inter-annual variation and variability as well as reduce artificial climate trends in the reanalysis by approximately 0.10℃ decade-1 from 1980 to 2007. The RIEMS can effectively reduce artificial trends in global reanalysis for areas in western China, especially for regions with high altitude mountains and deserts, as well as introduce some new spurious changes in other local regions. The model simulations overesti- mated observed winter trends for most areas in eastern China with the exception of the Tibetan Plateau, and it greatly overestimated observed summer trends in the Si- chuan Basin located in southwest China. This implies that the dynamical downscaling of RCM for long-term trends has certain seasonal and regional dependencies due to imperfect physical processes and parameterizations.
文摘This work aims to verify how the Web portals of Universities Hospital located in the northeast of Brazil are contributing to the expansion of knowledge of its users from the analysis of interactive features associated with the three mechanisms of knowledge management： knowledge access （KA）, knowledge creation （KC）, and knowledge transfer （KT）. The study is exploratory, descriptive, and qualitative type, such as a survey, developed through an adaptation of a relevant research, which involves the standardization of data collection instruments （questionnaires and interviews） applied directly to persons of a specific population, to assess knowledge management tools present in the University Hospital portals in the northeast region of Brazil. The results indicated that the resources from knowledge access were more prevalent than the others, ratifying the results found in research developed in Asian and North American Hospital portals.
