Baumgardner D, Raga G B, Grutter M, Lammel G
Universidad Nacional Autonoma de Mexico, Central de Ciencias de la Atmosfera, Circuito Exterior, Ciudad Universitaria, 04150 Mexico City, Distrito Federal, Mexico.
Sci Total Environ. 2006 Aug 15;367(1):288-301. doi: 10.1016/j.scitotenv.2005.11.013. Epub 2005 Dec 19.
Measurements of aerosol particles in a coastal city in southeast Mexico show that the concentrations and optical properties are strongly linked to land and sea breezes. Maximum concentrations of condensation nuclei (CN), black carbon (BC) and particle bound polycyclic aromatic hydrocarbons (PPAH) occur during land breeze periods and decrease with the sea breeze. The concentrations of particles in air from the ocean, however, remain significantly above background, maritime values as a result of the recirculation of anthropogenic emissions. The mass size distribution is dominated by particles larger than 5 microm when wind speeds exceed 4 m s(-1); otherwise, the uptake of water vapor onto unactivated particles is the process that dominates the growth of particles. Precipitation removes particles larger than 5 microm but CN, BC and PPAH concentrations are minimally affected.
对墨西哥东南部一个沿海城市气溶胶颗粒的测量表明，其浓度和光学特性与海陆风密切相关。在陆风时段，凝结核（CN）、黑碳（BC）和颗粒结合多环芳烃（PPAH）的浓度达到最大值，并随着海风的到来而降低。然而，由于人为排放的再循环，来自海洋的空气中的颗粒浓度仍显著高于背景海洋值。当风速超过4米/秒时，质量粒径分布以大于5微米的颗粒为主；否则，未活化颗粒上的水汽吸附是主导颗粒生长的过程。降水去除了大于5微米的颗粒，但CN、BC和PPAH的浓度受影响最小。
