PM 2.5 unit conversion from kg/m3 to kg/m2

[dinesh_5497]

I have data from merra 2 for sea salt mass concentration, the unit is kg/m3 , i need it in kg/m2 for my application. I like value for length scale which needs to multipled to it. How to find a length scale for specific location.

[mgreene]

Hello,

A MERRA-2 subject matter expert will respond soon.

Regards,

[mbosilov]

I have data from merra 2 for sea salt mass concentration, the unit is kg/m3 , i need it in kg/m2 for my application. I like value for length scale which needs to multipled to it. How to find a length scale for specific location.

[mbosilov]

I have data from merra 2 for sea salt mass concentration, the unit is kg/m3 , i need it in kg/m2 for my application. I like value for length scale which needs to multipled to it. How to find a length scale for specific location.

Hi, I am assuming that you are using a variable SSSMASS25. The surface layer height varies in space and time. You can find HLML (Height of the lowest model layer, units m) in tavg1_2d_flx_Nx (M2T1NXFLX): Surface Flux Diagnostics. I hope that helps.

[dinesh_5497]

Based on your answer, i need to download HLML from tavg1_2d_flx_Nx (M2T1NXFLX) and multiply with the SSSMASS.