Global mean sea level budget is rigorously adjusted during the period 2005-2015.The emphasis is to provide the best estimates for the linear rates of changes(trends)of the global mean sea level budget components durin...Global mean sea level budget is rigorously adjusted during the period 2005-2015.The emphasis is to provide the best estimates for the linear rates of changes(trends)of the global mean sea level budget components during this period subject to the constraint:Earth’s hydrosphere conserves water.The newly simultaneously adjusted trends of the budget components suggest a larger correction for the global mean sea level trend implicated by the other budget components’trends under the budget constraint.The simultaneous estimation of the linear trends of the budget components subject to the constraint for closure improves their uncertainties and enables a holistic assessment of the global mean sea budget,which has implications for future sea level science studies,including the future Intergovernmental Panel on Climate Change(IPCC)Assessment Reports,and the US Climate Assessment Reports.展开更多
Tidal data from Weizhou, Zhapo, and Shanwei stations between 1969 and 2010 and from five gauging stations in the western Pacific Ocean provided by PSMSL, and the global mean sea level data recorded between December 19...Tidal data from Weizhou, Zhapo, and Shanwei stations between 1969 and 2010 and from five gauging stations in the western Pacific Ocean provided by PSMSL, and the global mean sea level data recorded between December 1992 and December 2010 by TOPEX and Jason satellites were compiled and analyzed. The results show that the perennial mean sea level near Weizhou Island is 211.7 cm(relative to the water gauge zero), and the relative mean sea level rising rate is 2.2 mm yr-1 from 1969 to 2010, which is consistent with the relative mean sea level rising rate recorded at other gauging stations in the western Pacific regions and with the global mean sea level rising rate. The absolute mean sea level rising rate at Weizhou Island is 3.0 mm yr-1 from 1993 to 2010, also conforming with the global mean sea level rising rate(3.1±0.4 mm yr-1) during the same time period. The highest annual tide level at Weizhou Island has a rising rate of 4.6 mm yr-1 and shows a 20-year quasi-periodic variation from 1966 to 2010. The primary cause of the mean sea level rising is global warming.展开更多
Subject Code:D06A collaborative study partly sponsored by the National Natural Science Foundation of China indicates that the global mean sea level is still accelerated rising,with much of the increase from the accele...Subject Code:D06A collaborative study partly sponsored by the National Natural Science Foundation of China indicates that the global mean sea level is still accelerated rising,with much of the increase from the accelerated Greenland ice sheet melting during 1993—2014.The work is coauthored by Prof.Chen Xianyao(陈显尧)展开更多
The Flux-Anomaly-Forced Model Intercomparison Project(FAFMIP)is an endorsed Model Intercomparison Project in phase 6 of the Coupled Model Intercomparison Project(CMIP6).The goal of FAFMIP is to investigate the spread ...The Flux-Anomaly-Forced Model Intercomparison Project(FAFMIP)is an endorsed Model Intercomparison Project in phase 6 of the Coupled Model Intercomparison Project(CMIP6).The goal of FAFMIP is to investigate the spread in the atmosphere–ocean general circulation model projections of ocean climate change forced by increased CO2,including the uncertainties in the simulations of ocean heat uptake,global mean sea level rise due to ocean thermal expansion and dynamic sea level change due to ocean circulation and density changes.The FAFMIP experiments have already been conducted with the Flexible Global Ocean–Atmosphere–Land System Model,gridpoint version 3.0(FGOALS-g3).The model datasets have been submitted to the Earth System Grid Federation(ESGF)node.Here,the details of the experiments,the output variables and some baseline results are presented.Compared with the preliminary results of other models,the evolutions of global mean variables can be reproduced well by FGOALS-g3.The simulations of spatial patterns are also consistent with those of other models in most regions except the North Atlantic and the Southern Ocean,indicating large uncertainties in the regional sea level projections of these two regions.展开更多
Inconsistencies between datasets are examined with reference to flood tidal elevations in the Tamar River estuary, Tasmania Australia. Errors in a 30-year-old commonly cited dataset have been perpetuated in subsequent...Inconsistencies between datasets are examined with reference to flood tidal elevations in the Tamar River estuary, Tasmania Australia. Errors in a 30-year-old commonly cited dataset have been perpetuated in subsequent publications and datasets, and a clarification is herein provided. Elevation of the flood tidal wave as it propagates the estuary is evident in mean tide level and mean sea level, although the analysis is compromised by the temporal differences of the datasets. As sea levels rise due to global warming, the importance of accurate on-going sea level data in any estuary will become more acute.展开更多
The near future of coastal life is threated by the claim of global warming alarmist that sea levels will rise by one to seven metres by 2100,destroying many coastal cities and habitats.This paper shows that sea levels...The near future of coastal life is threated by the claim of global warming alarmist that sea levels will rise by one to seven metres by 2100,destroying many coastal cities and habitats.This paper shows that sea levels will more likely rise no more than just a few centimetres during this century as the Earth defrosts from the Little Ice Age 500 years ago with a mild warming.展开更多
基金partially supported by the Natural Science Foundation of China(Grant No.41974040)。
文摘Global mean sea level budget is rigorously adjusted during the period 2005-2015.The emphasis is to provide the best estimates for the linear rates of changes(trends)of the global mean sea level budget components during this period subject to the constraint:Earth’s hydrosphere conserves water.The newly simultaneously adjusted trends of the budget components suggest a larger correction for the global mean sea level trend implicated by the other budget components’trends under the budget constraint.The simultaneous estimation of the linear trends of the budget components subject to the constraint for closure improves their uncertainties and enables a holistic assessment of the global mean sea budget,which has implications for future sea level science studies,including the future Intergovernmental Panel on Climate Change(IPCC)Assessment Reports,and the US Climate Assessment Reports.
基金supported by the Youth Ocean Science Foundation of SOA, China (2010208)the National Natural Science Foundation of China (41030856)
文摘Tidal data from Weizhou, Zhapo, and Shanwei stations between 1969 and 2010 and from five gauging stations in the western Pacific Ocean provided by PSMSL, and the global mean sea level data recorded between December 1992 and December 2010 by TOPEX and Jason satellites were compiled and analyzed. The results show that the perennial mean sea level near Weizhou Island is 211.7 cm(relative to the water gauge zero), and the relative mean sea level rising rate is 2.2 mm yr-1 from 1969 to 2010, which is consistent with the relative mean sea level rising rate recorded at other gauging stations in the western Pacific regions and with the global mean sea level rising rate. The absolute mean sea level rising rate at Weizhou Island is 3.0 mm yr-1 from 1993 to 2010, also conforming with the global mean sea level rising rate(3.1±0.4 mm yr-1) during the same time period. The highest annual tide level at Weizhou Island has a rising rate of 4.6 mm yr-1 and shows a 20-year quasi-periodic variation from 1966 to 2010. The primary cause of the mean sea level rising is global warming.
文摘Subject Code:D06A collaborative study partly sponsored by the National Natural Science Foundation of China indicates that the global mean sea level is still accelerated rising,with much of the increase from the accelerated Greenland ice sheet melting during 1993—2014.The work is coauthored by Prof.Chen Xianyao(陈显尧)
基金This study was supported by National Key R&D Program for Developing Basic Sciences(2018YFA0605703)the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB42010404)the National Natural Science Foundation of China(Grants 41976026,41776030 and 41931183,41931182)。
文摘The Flux-Anomaly-Forced Model Intercomparison Project(FAFMIP)is an endorsed Model Intercomparison Project in phase 6 of the Coupled Model Intercomparison Project(CMIP6).The goal of FAFMIP is to investigate the spread in the atmosphere–ocean general circulation model projections of ocean climate change forced by increased CO2,including the uncertainties in the simulations of ocean heat uptake,global mean sea level rise due to ocean thermal expansion and dynamic sea level change due to ocean circulation and density changes.The FAFMIP experiments have already been conducted with the Flexible Global Ocean–Atmosphere–Land System Model,gridpoint version 3.0(FGOALS-g3).The model datasets have been submitted to the Earth System Grid Federation(ESGF)node.Here,the details of the experiments,the output variables and some baseline results are presented.Compared with the preliminary results of other models,the evolutions of global mean variables can be reproduced well by FGOALS-g3.The simulations of spatial patterns are also consistent with those of other models in most regions except the North Atlantic and the Southern Ocean,indicating large uncertainties in the regional sea level projections of these two regions.
文摘Inconsistencies between datasets are examined with reference to flood tidal elevations in the Tamar River estuary, Tasmania Australia. Errors in a 30-year-old commonly cited dataset have been perpetuated in subsequent publications and datasets, and a clarification is herein provided. Elevation of the flood tidal wave as it propagates the estuary is evident in mean tide level and mean sea level, although the analysis is compromised by the temporal differences of the datasets. As sea levels rise due to global warming, the importance of accurate on-going sea level data in any estuary will become more acute.
文摘The near future of coastal life is threated by the claim of global warming alarmist that sea levels will rise by one to seven metres by 2100,destroying many coastal cities and habitats.This paper shows that sea levels will more likely rise no more than just a few centimetres during this century as the Earth defrosts from the Little Ice Age 500 years ago with a mild warming.
