Data and Matlab scripts used in D. H. Rothman, Slow Closure of Earth's Carbon Cycle, PNAS

This code and associated data files replicate all figures andresults contained in D. H. Rothman, Slow Closure of Earth's Carbon Cycle, PNAS, January 2024.<br>----------------------------------Data Tables----------------------------------All data contained in the data tables has either been previouslypublished explicitly or displayed in previously publications.Detailed references are given in the manuscript.<br>A list of tables follows.<br>degtable.csvContains the degradation database of 23 sediment cores originallystudied by Rothman and Forney (2007). See the header within thisfile for more information.<br>T*.csvWithin these tables, the units of measurement are as follows:age [sediment age, Myr]depth [sediment depth, m]n [cells per cubic cm]org [wt % total organic carbon]<br>There is some overlap in the content of these tables.A summary follows:<br>Tn.csv contains cell counts as a function of site, age, and depth inproductive regions.<br>Torg.csv contains Corg concentrations as a function of site, age, anddepth in productive regions.<br>Tspgeqpac0.csv contains cell counts as a function of site, age, anddepth in the South Pacific Gyre and Pacific Equatorial Transect.<br>Tspgeqpac.csv contains cell counts as a function of site, age, anddepth in the South Pacific Gyre and Pacific Equatorial Transect onlyfor ages greater than t*=1.5 Myr.<br>Tspgeqpacorg0.csv contains Corg concentrations as a function of site,age, and depth in the South Pacific Gyre and Pacific EquatorialTransect.<br>Tspgorg.csv contains Corg concentrations as a function of site, age,and depth in the South Pacific Gyre<br><br>----------------------------------Recreate Figures----------------------------------<br>recreate_figures.m makes all figures in the manuscript.See comments within this file for the specific scriptscorresponding to each figure.<br>All scripts have been successfully run using Matlab R2022aunder the Linux-based OS Ubuntu 18.04.1.

本代码及配套数据文件可复现D. H. Rothman于2024年1月发表于《美国国家科学院院刊（Proceedings of the National Academy of Sciences，PNAS）》的论文《地球碳循环的缓慢闭合（Slow Closure of Earth's Carbon Cycle）》中的全部图表与研究结果。
----------------------------------数据表格----------------------------------
所有数据表格中的内容均已在既往研究中正式发表，或曾公开展示于已出版文献中，详细参考文献信息见手稿正文。
以下为数据集表格清单：
degtable.csv：包含Rothman与Forney（2007）最初研究的23个沉积物岩芯的降解数据库，更多细节请参见该文件内部的表头注释。
T*.csv：下述表格的测量单位如下：
age [沉积年龄，百万年（Myr）]
depth [沉积物深度，米（m）]
n [每立方厘米细胞数]
org [总有机碳质量百分比（wt %）]
各表格内容存在一定重叠，具体汇总如下：
Tn.csv：包含高生产力区域内，以采样位点、沉积年龄及沉积物深度为变量的细胞计数数据。
Torg.csv：包含高生产力区域内，以采样位点、沉积年龄及沉积物深度为变量的总有机碳（Corg）浓度数据。
Tspgeqpac0.csv：包含南太平洋环流区与太平洋赤道样带内，以采样位点、沉积年龄及沉积物深度为变量的细胞计数数据。
Tspgeqpac.csv：仅针对沉积年龄大于t*=1.5 Myr的样本，包含南太平洋环流区与太平洋赤道样带内，以采样位点、沉积年龄及沉积物深度为变量的细胞计数数据。
Tspgeqpacorg0.csv：包含南太平洋环流区与太平洋赤道样带内，以采样位点、沉积年龄及沉积物深度为变量的总有机碳（Corg）浓度数据。
Tspgorg.csv：包含南太平洋环流区内，以采样位点、沉积年龄及沉积物深度为变量的总有机碳（Corg）浓度数据。

----------------------------------图表复现----------------------------------
recreate_figures.m：可生成手稿中的全部图表，各图表对应的具体脚本信息请参见该文件内部的注释说明。
所有脚本均已在基于Linux的Ubuntu 18.04.1操作系统下，使用Matlab R2022a成功运行。