DISTRIBUTIONS OF NO, NOX, NOY, AND O-3 TO 12-KM ALTITUDE DURING THE SUMMER MONSOON SEASON OVER NEW-MEXICO

During late July and August 1989, 12 flights of the National Center fo r Atmospheric Research Sabreliner jet aircraft were made over New Mexi co when the region was dominated by either synoptic high pressure or m oist ''monsoon'' flow. In the latter case, sampling was made within an d about deep convective clouds which were sometimes electrically activ e. A summary of the measurements of the species listed in the title an d their ratios are given. These distributions include signatures from deep convection, lightning production of odd nitrogen, aircraft exhaus t emissions, and possible stratospheric input. The averages and range of these distributions are considered to be more representative of typ ical summer conditions over the region compared to flights that are of ten restricted more to fair weather situations. Coherence between the O-3 and the NOy observations is compared to results from other ground- based and aircraft programs and possible contributing factors are disc ussed. Because the measurements were made with then newly developed in strumentation, its capabilities and shortcomings are summarized.