Abundant Nitrate and Nitric Acid Aerosol in the Upper Troposphere and Lower Stratosphere

The Extratropical Upper Troposphere and Lower Stratosphere

[1] The extratropical upper troposphere and lower stratosphere (Ex‐UTLS) is a transition region between the stratosphere and the troposphere. The Ex‐UTLS includes the tropopause, a strong static stability gradient and dynamic barrier to transport. The barrier is reflected in tracer profiles. This region exhibits complex dynamical, radiative, and chemical characteristics that place stringent spa...

Aerosol measurements in the troposphere and stratosphere.

Light scattering measurements from a searchlight beam were carried out in New Mexico to determine the aerosol properties of the atmosphere. Although data were acquired to an altitude of about 70 km, the results show the aerosol attenuation parameters to be significant to about 35 km. The expression for the aerosol attenuation coefficient is derived based on the field geometry in conjunction wit...

The Circulation of the Upper Troposphere and Lower Stratosphere.

Scionce, a weekly journal, is published each Friday by the American Association for the Advancement of Science at The Business Press, Incorporated, N. Queen St. and McGovern Aye., Lancaster, I'a. Founded in 1880, it has been since 1900 the official publication of the AAAS. Editorial and Advertising Offices, 1515 Massachusetts Avenue, N.W., Washington 5, D. C. Telephone, EXecutive 6060 or 61. Ca...

Total depletion of Hg° in the upper troposphere- lower stratosphere

Simulations of water isotope abundances in the upper troposphere and lower stratosphere and implications for stratosphere troposphere exchange

[1] An analytic model of transport and microphysics in the tropical tropopause layer (TTL) is extended to include stable isotopes of water. The model, running along trajectories, is tested against in situ and satellite observations of HDO and H2 O in the Upper Troposphere and Lower Stratosphere (UT/LS). The model is able to reproduce the range of isotopic depletions observed in the data, and re...