DOI: 10.5281/zenodo.14716230
title: Atmospheric boundary layer development over bare soil and forest in the Mediterranean Basin

description: These files include data on the development of the atmospheric boundary layer throughout the day. This data was output for study which aimed at identifying the impact of forestation on the development on the atmosperhic boundary layer in the Mediterranean Basin. A preprint of this study will be available soon. When it becomes available the link will be shared here. This pre-print will give some more detailed information about this data.

The model that was used for these simulations is CLASS  (http://classmodel.github.io/). The simuations are conducted for the months May and June for the years 2013-2022. We used ERA5 data as input for this model with a resolution of 0.25 DEG. This resulted in a total of 2868 grid cells when following the shapefile as introduced by Theeuwen et al. (2024). To minimize computation time, the input data was sampled. We sample over space and time. For each grid cell 20 simulations are conducted. These 20 simulations include 2 simulations per year. The exact day is selected randomly. A full list of the samples is included in file: "samples_zenodo.txt". The corresponding longitudes and latitudes per grid cell are included in file: "index_lon_lat.txt".

After conducting the first two simulations (05_wind5.nc and 15_wind5.nc) we found that some simulations result in unrealistic data. The data were filtered based on realistic variable ranges. The other files only include the output for the samples with realistic output data. The list of samples with realistic output data is included in file:"filtered_combined_samples_150724.txt".

Two files include the boundary layer development for ERA5 soil moisutre conditions. Hence, trhoughout the study region therer is spatial variability in soil moisture. 5 files include the boundary layer developmnt for 5 different soil moisture cases. These 5 soil moisture cases vary linearly from wilting point (WP) to field capacity (FC). Throughout the entire study region the soil moisture content is constant in space. The simulations of the development of the boundary layer for these 5 soil moisture cases have forest as land cover type. The table below gives an overview of the model settings for the different simulations.




Filename
Soil moisture
Land cover


05_wind5.nc (05_CAPE.nc)
ERA5
Bare soil


15_wind5.nc (15_CAPE.nc)
ERA5
Forest


10.nc (10_CAPE.nc)
Wilting point
Forest


11.nc (11_CAPE.nc)
WP+1/4(FC-WP) 
Forest


12.nc (12_CAPE.nc)
WP+1/2(FC-WP) 
Forest


13.nc (13_CAPE.nc)
WP+3/4(FC-WP) 
Forest


14.nc (14_CAPE.nc)
Field capacity
Forest




Coding used in the filenames: 

First number in the filename indicates the land cover type:

Desert = 0Forest = 1

Second number in the filename indicates the soil moisture case:

soil moisture low = 0soil moisture medium-low = 1soil moisture medium = 2soil moisture medium-high = 3soil moisture high = 4ERA5 soil moisture = 5

Example:05.nc => Desert parms. + ERA5 soil moisture

 

References:

Theeuwen, J. J. E., Dekker, S. C., Hamelers, H. V. M., & Staal, A. (2024). Ecohydrological variables underlie local moisture recycling in Mediterranean‐type climates. Journal of Geophysical Research: Biogeosciences, 129(10), e2024JG008286.