AEROMMA Planning



17 May – 5 July 2021 Calendar

AEROMMA will be comprised of approximately 19 science flights, including test and transit flights, and consists of both a West and East coast deployment. West coast operations will be focused on the Los Angeles basin and the coastal Pacific marine environment. East coast operations will characterize emissions from a number of US megacities and conduct several marine survey flights in the North Atlantic.

We anticipate conducting 2-3 flights for the major megacity targets covering weekday/weekend, urban/rural gradients, and diurnal cycles. Depending on meteorological conditions each flight to a megacity can cover other smaller cities or more than one megacity. Two flights in Los Angeles and the Central Valley were already conducted during FIREX-AQ in 2019.

We estimate four flights dedicated to the survey of the marine atmosphere. The east and west coast regions of the US have variable NOx mixing ratios, temperature, background aerosol, and cloud properties that are accessible throughout the flight range of the NOAA WP-3D. This variability provides the necessary statistics for studying the impact of these parameters on the distribution and fate of marine emissions, oxidation chemistry and aerosol abundance and composition.

NOAA Twin Otter

21 June – 3 August 2021 Calendar

175 flight hour and approximately 22 science flights. Flights are anticipated every other day to target coastal dynamics and urban plumes along the Northeast Corridor, and to provide necessary statistics to improve NOAA weather-chemistry model predictions of coastal meteorology and urban plumes of gas-phase species. The Twin Otter will be based in the Northeast US during the field campaign.

Deployment Considerations

Evolution of the dates of occurrence of the highest maximum daily 8 hour ozone design values
Proposed study period is mid-May to mid-July to deconflict with hurricane season and to cover the maximum ozone occurrence, which is shifting earlier into the summer season since the 1970s. This time period also has a high probability of being impacted by the presence of clouds allowing for observations of aqueous oxidation and cloud processing of marine sulfur.
US map overlay
Flight range of the NOAA WP-3D indicated as rings on the map. The aircraft will base in California and New England to access several major coastal and inland cities and two ocean basins for AEROMMA.