Volatile Organic Compounds Model Intercomparison Project (VOCMIP)

Given the significant role of volatile organic compounds (VOCs) on ozone formation, methane lifetime, atmospheric hydrogen formation, secondary organic aerosol formation, overall atmospheric chemistry, and both indirect and direct health impacts, their accurate representation in global atmospheric chemistry models is crucial. In this context, we introduce the Volatile Organic Compounds Model Intercomparison Project (VOCMIP) and invite atmospheric chemistry modeling groups to participate in this collaborative effort. VOCMIP aims to identify model consistencies and discrepancies, enhance parameterizations, and advance our understanding of VOC-related processes in the atmosphere. Global atmospheric chemistry model output will be compared to satellite data and in situ measurements from surface stations and aircraft campaigns for key VOCs. Special emphasis will be placed on formaldehyde (HCHO), examining its chemical sources and sinks, with a particular focus on its role in the atmospheric production of hydrogen.