求是海洋学术论坛2024年09期（总48期）——Bridging the gap between models and observations: An inverse modeling approach

一、时间：2024年5月28日（周二）9:00

二、方式：

线上：腾讯会议769-351-879

线下：舟山校区海科楼342

三、主讲人：厦门大学 王为磊教授

四、报告题目：Bridging the gap between models and observations: An inverse modeling approach

报告摘要：

Fixed nitrogen (bioavailable nitrogen) is an essential nutrient that limits phytoplankton growth over most of the ocean.  Each year a tremendous amount of fixed nitrogen is lost via denitrification and/or anammox in low oxygen environments.  Compensating for this persistent removal of fixed nitrogen, special microorganisms known as diazotrophs can break up the triple-bond of N2 gas to fix nitrogen and thus render it biologically available.  An open question in oceanography is whether negative feedbacks couple denitrification and nitrogen fixation to prevent large swings in the ocean’s inventory of biologically available nitrogen.

When models and data disagree the strong modeler seeks to revise the model whereas the strong experimentalist seeks to improve the dataset. The inverse modeler on the other hand recognizes that there is wisdom in both points of view and seeks the truth in the gap between models and observations. In this talk, I will demonstrate how to combine observations with models to estimate global-scale marine nitrogen fixation rates.

主讲人简介：

王为磊，厦门大学海洋与地球学院教授，主要从事海洋碳、氮的生物地球化学循环和逆向模式开发等方向的研究。担任西北太平洋环流与气候计划（NPOCE）科学指导委员会委员和中国海洋研究科学委员会（SCOR）会员。近5年以第一或通讯作者在Nature（2篇）、Nature Communications等期刊发表学术论文20篇，成果入选“2023年度中国海洋与湖沼十大科技进展”和“2023年度中国海洋科技十大进展”。