基于卫星观测数据计算的1/4 °涡致经向热通量（EHF）和涡致经向热输运（EHT）数据集（1993-2016年）

基于MITgcm高分辨率资料得到的南大洋多年平均的涡致经向热通量（EHF）和涡致经向热输送（EHT）的时间序列数据集。对海表面地转速度以及海表面温度数据进行150天高通滤波的中尺度处理，依据计算公式得到，EHF=rho*Cp*v`*theta`其中，rho是海水密度，Cp是海水比热容，v;和theta`分别表示水平速度矢量和温度的中尺度异常。EHF作为矢量，可以用亥姆霍兹分解将其分解为发散分量和旋转分量。在本研究中，主要关注的经向发散分量，也就是EHF。之后对EHF进行纬向积分得到EHT。

A time-series dataset of multi-year averaged eddy-induced meridional heat flux (EHF) and eddy-induced meridional heat transport (EHT) in the Southern Ocean, derived from high-resolution MITgcm outputs. The dataset is calculated using the formula $EHF =
ho cdot C_p cdot v' cdot heta'$, after applying mesoscale processing via a 150-day high-pass filter to sea surface geostrophic velocity and sea surface temperature data. Here, $
ho$ denotes seawater density, $C_p$ represents the specific heat capacity of seawater, while $v'$ and $ heta'$ refer to the mesoscale anomalies of the horizontal velocity vector and temperature, respectively. As a vector quantity, EHF can be decomposed into divergent and rotational components through Helmholtz decomposition. In this study, our primary focus is on the meridional divergent component of EHF. Subsequently, EHT is obtained by performing zonal integration on EHF.

搜集汇总

背景与挑战

背景概述

该数据集提供了1993-2016年南大洋的涡致经向热通量（EHF）和涡致经向热输运（EHT）的多年平均时间序列数据，基于卫星观测数据和高分辨率资料计算得出，适用于海洋科学研究。