Seventeen models participating in the Coupled Model Intercomparison Project phase 5（CMIP5） activity are compared on their historical simulation of the South China Sea（SCS） ocean heat content（OHC） in the upper 30...Seventeen models participating in the Coupled Model Intercomparison Project phase 5（CMIP5） activity are compared on their historical simulation of the South China Sea（SCS） ocean heat content（OHC） in the upper 300 m. Ishii＇s temperature data, based on the World Ocean Database 2005（WOD05） and World Ocean Atlas 2005（WOA05）, is used to assess the model performance by comparing the spatial patterns of seasonal OHC anomaly（OHCa） climatology, OHC climatology, monthly OHCa climatology, and interannual variability of OHCa. The spatial patterns in Ishii＇s data set show that the seasonal SCS OHCa climatology, both in winter and summer, is strongly affected by the wind stress and the current circulations in the SCS and its neighboring areas. However, the CMIP5 models present rather different spatial patterns and only a few models properly capture the dominant features in Ishii＇s pattern. Among them, GFDL-ESM2 G is of the best performance. The SCS OHC climatology in the upper 300 m varies greatly in different models. Most of them are much greater than those calculated from Ishii＇s data. However, the monthly OHCa climatology in each of the 17 CMIP5 models yields similar variation and magnitude as that in Ishii＇s. As for the interannual variability, the standard deviations of the OHCa time series in most of the models are somewhat larger than those in Ishii＇s. The correlation between the interannual time series of Ishii＇s OHCa and that from each of the 17 models is not satisfactory. Among them, BCC-CSM1.1 has the highest correlation to Ishii＇s, with a coefficient of about 0.6.展开更多
碳酸盐含量检测是填海项目质量控制的重要指标,填料中的碳酸盐含量超标会影响填海后土地的强度和稳定性以及建筑物的耐久性。本次研发依托境外某大型填海工程的大量测试任务,研发了通过测量酸-盐反应后产生二氧化碳气体的体积而测定碳...碳酸盐含量检测是填海项目质量控制的重要指标,填料中的碳酸盐含量超标会影响填海后土地的强度和稳定性以及建筑物的耐久性。本次研发依托境外某大型填海工程的大量测试任务,研发了通过测量酸-盐反应后产生二氧化碳气体的体积而测定碳酸盐含量的高效五联碳酸盐含量测试仪,包括其工作原理、设计思路、性能指标、仪器测试步骤、数据计算及质量控制等。通过对填料的测试结果分析,研发的五联碳酸盐含量测试仪达到了适用英国标准BS EN IOS 10693:2014的测试标准,测试适用范围广,结果精确度高,单组测试所需时间减少30%~50%,测试效率高的目的,并取得了良好的实用效果。展开更多
基金The National Basic Research Program(973 Program)of China under contract No.2011CB403502the Major National Scientific Research Projects of China under contract No.2012CB957803+2 种基金the National Natural Science Foundation of China under contract Nos 41006018 and 41476024the Foundation for Outstanding Young and Middle-aged Scientists in Shandong Province of China under contract No.BS2011HZ019the UNESCO-IOC/WESTPAC Project"Response of marine hazards to climate change in the Western Pacific"
文摘Seventeen models participating in the Coupled Model Intercomparison Project phase 5（CMIP5） activity are compared on their historical simulation of the South China Sea（SCS） ocean heat content（OHC） in the upper 300 m. Ishii＇s temperature data, based on the World Ocean Database 2005（WOD05） and World Ocean Atlas 2005（WOA05）, is used to assess the model performance by comparing the spatial patterns of seasonal OHC anomaly（OHCa） climatology, OHC climatology, monthly OHCa climatology, and interannual variability of OHCa. The spatial patterns in Ishii＇s data set show that the seasonal SCS OHCa climatology, both in winter and summer, is strongly affected by the wind stress and the current circulations in the SCS and its neighboring areas. However, the CMIP5 models present rather different spatial patterns and only a few models properly capture the dominant features in Ishii＇s pattern. Among them, GFDL-ESM2 G is of the best performance. The SCS OHC climatology in the upper 300 m varies greatly in different models. Most of them are much greater than those calculated from Ishii＇s data. However, the monthly OHCa climatology in each of the 17 CMIP5 models yields similar variation and magnitude as that in Ishii＇s. As for the interannual variability, the standard deviations of the OHCa time series in most of the models are somewhat larger than those in Ishii＇s. The correlation between the interannual time series of Ishii＇s OHCa and that from each of the 17 models is not satisfactory. Among them, BCC-CSM1.1 has the highest correlation to Ishii＇s, with a coefficient of about 0.6.
文摘碳酸盐含量检测是填海项目质量控制的重要指标,填料中的碳酸盐含量超标会影响填海后土地的强度和稳定性以及建筑物的耐久性。本次研发依托境外某大型填海工程的大量测试任务,研发了通过测量酸-盐反应后产生二氧化碳气体的体积而测定碳酸盐含量的高效五联碳酸盐含量测试仪,包括其工作原理、设计思路、性能指标、仪器测试步骤、数据计算及质量控制等。通过对填料的测试结果分析,研发的五联碳酸盐含量测试仪达到了适用英国标准BS EN IOS 10693:2014的测试标准,测试适用范围广,结果精确度高,单组测试所需时间减少30%~50%,测试效率高的目的,并取得了良好的实用效果。
