Air mass exposure to chlorophyll a (AEC) over the eastern China seas during 2009 to 2020

<p>This dataset contains (1) air mass exposure to chlorophyll <em>a</em> (AEC) values, (2) air mass retention ratio over the land (<em>R_L</em>), (3) marine air mss retention ratio within the boundary layer (<em>R_MBL</em>), and (4) harmonic means of boundary layer height along the air mass trajectory (BLH_traj) over the eastern China seas spanning from 2009 to 2020. The domain (23&minus;37&deg; N, 117&minus;130&deg; E) includes the south Yellow Sea (YS), the East China Sea (ECS), and part of Northwest Pacific, which is divided into 145 grids with a spatial resolution of 1&deg; &times; 1&deg;. The time period is 1 January 2009 &minus; 31 December 2020, and the time resolution is 6 hours. The tracking time of initial trajectory is 72 hours.</p> <p>The Matlab scripts for calculating the abovementioned indices are also given. The main code includes &quot;AEC_Cal_Multi.m&quot;, &quot;AirmasstoChla.m&quot;, and &quot;BLH_traj_multi.m&quot;.</p>