Ben K. D. Pearce's repositories
Wet_Dry_Cycling_Pond_Model
Comprehensive sources and sinks numerical pond model to compute biomolecule concentrations under seasonal wet-dry cycles. Biomolecule sources are: 1) meteorites, 2) interplanetary dust, and 3) aqueous production from atmospheric rainout of HCN and H2CO precursors. Biomolecule sinks are: 1) seepage, 2) hydrolysis, and 3) UV photodissociation. Rate data is experimental, based on the lunar cratering record, or from non-equilibrium atmospheric models in the case of HCN and H2CO influxes. Annual wet-dry cycles are computed based on precipitation, evaporation, and seepage with precipiration rate data corresponding to locations on Earth today. For further details, see Pearce et al. (2017), PNAS (10.1073/pnas.1710339114) and Pearce et al. (2021), Nature Astronomy.
1D_Advection_Diffusion
a 1D advection-diffusion code for simulating the mixing of a local concentration of molecules in a pond
1D_Diffusion
a 1D diffusion code for simulating outflow of molecules from a meteorite
Chromatogram_Peak_Integrator
An example peak integration tool developed for chromatogram peak area analysis. In this example, I calculated the average and standard deviation of nucleobase concentrations in organic hazes.