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| Climate variability of the ocean-atsmophere energy exchanges during the last 170 years from ship observations | |
| 项目编号 | 20-17-00139 |
| Gulev Sergey | |
| 项目主持机构 | P.P.Shirshov Institute of Оceanology of Russian Academy of Science, |
| 开始日期 | 2020 |
| 结束日期 | 2022 |
| 英文摘要 | The project aims on the problem of a reliable quantitative description of the long-term dynamics of the processes of interaction between the ocean and the atmosphere at the scales of decades and a century, and to assess the mechanisms of the influence of the long-period variability of the World Ocean on climate dynamics. We intend to use all available ship observations on the surface of the oceans to build a reliable reconstruction of measurements of heat fluxes on the surface for the period from 1850 to the present. This will make it possible for the first time to estimate, according to observational data, changes in ocean-atmosphere energy fluxes over long time scales, to obtain estimates of the variability of energy exchange consistent with long-term ocean level measurements, and to quantitatively characterize the mechanisms of the ocean's effect on climate. The lack of long-term estimates of ocean-atmosphere energy fluxes today holds back the understanding of the role of the ocean in shaping climate variability over decades. It is the solution to this problem that our project aims at. The main objective of the project is the creation of a high-precision global climatology of energy flows at the ocean-atmosphere interface from 1850 to the present and a reliable assessment of changes in energy flows on the ocean surface at time scales from decades to centuries, consistent with measurements of heat content and sea level. To achieve this goal, we will create an integrated long-term database of ship observations of driving meteorological characteristics for the period 1850-2020, develop a methodology for constructing a global long-period climatology of all components of the thermal balance of the World Ocean and build a global long-term climatology of all components of energy and mass transfer on the ocean-atmosphere border from 1850 to the present. This will make it possible to obtain estimates of the long-term climatic changes of all components of heat and mass fluxes on the surface of the oceans at scales from several decades to 170 years and a joint analysis of the inter-decade variability of heat and mass fluxes on the surface of the oceans and measurements of the level of the oceans, heat content, meridional heat transfers and fresh water. The novelty of the project tasks follows from the existing uncertainty in the closure of the balances of heat and mass of the World Ocean according to observations, which prevents the obtaining of mutually verified estimates of changes in ocean temperature, heat content of its upper layer, changes in the level and volume of evaporation, global meridional circulation, rates of surface water transformation, as well as quantity heat and moisture coming from the ocean to the atmosphere, making it extremely uncertain to estimate the role of the ocean in climate change. Within the framework of the project, for the first time, we will use the most comprehensive database of ship observations; correct all observations for the entire period since 1850, which will make it possible to obtain homogeneous series for the further calculation of all components of ocean-atmosphere energy fluxes over the past 170 years. The adaptation of existing parameterizations of turbulent and radiation flows will be carried out for the first time and new simplified parameterizations will be constructed for use with a limited number of parameters on a scale of more than a century. To build long-term series of flows and their integration, analytical distribution functions will be used, which will allow obtaining reliable and homogeneous (in the sense of representativeness) series of flows for the period from 1850 to the present. The project work plan includes the creation of an integrated long-term database of ship observations of driving meteorological characteristics for the period 1850-2020, the development of a methodology for constructing a global long-period climatology of all components of the World Ocean's heat and mass budget, including turbulent and radiation heat fluxes and a joint analysis of the inter-decade variability of heat and mass fluxes on the ocean surface and measurements of the level of the World Ocean, heat content, meridional heat transfer and fresh water and global imbalance of the Earth’s energy balance in order to assess the consistency of the observed measurements of energy flows with the dynamics of the main climate-forming characteristics of the oceans. The team of applicants has extensive experience in key areas for the implementation of the project that guarantees the successful implementation of the project. We have access to all the data archives mentioned above, as well as all the computer codes necessary for their analysis. In addition, applicants have significant scientific results in the claimed field of research, confirmed by publications in leading scientific journals |
| 英文关键词 | World ocean;ocean-amosphere energy exchanges;ship observations;heat balance;climate variability |
| 学科分类 | 08 - 地球科学 |
| 资助机构 | RU-RSF |
| 国家 | RU |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/191723 |
| 推荐引用方式 GB/T 7714 | Gulev Sergey.Climate variability of the ocean-atsmophere energy exchanges during the last 170 years from ship observations.2020. |
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