Sampler for Upper Tropospheric Carbon Dioxide

Abstract

A new sampler that has been successfully carried by a F-86-F jet fighter for collection of upper tropospheric carbon dioxide at an altitude up to 35, 000 feet is described. The sampler was designed to make use of the type 4 A molecular sieve (4 × 8 mesh) to absorb the carbon dioxide. The amount of carbon dioxide obtained in 1/2-1 hour of sampling time was 2-4 cc STP per gram of molecular sieve, the content of carbon dioxide absorbed at altitudes other than sampling ones was less than 5 %, being satisfactory for accurate ¹⁴C measurements.