The ozonesonde is an instrument which measures the amounts of ozone directly. A detailed vertical distribution of ozone up to an elevation of about 35 km can be observed using an ozonesonde suspended from a launched balloon. The RS2-KC96 ozonesonde used by JMA at Sapporo and Tsukuba is an electrochemical ozonesonde utilizing the principle of galvanic cells, which measures the oxidation reduction current generated when air containing ozone is injected into a potassium iodide (KI) solution to obtain the ozone concentration. Starting from November 2008 at Naha, and December 2009 at Sapporo and Tsukuba, JMA uses the ECC-type GPS ozonesondes, a combination of ECC-type ozone sensor and GPS radiosonde. The ECC-type ozone sensor is also an electrochemical instrument that uses a KI solution but utilizes the principle of concentration cells to measure oxidation reduction current, which differs from the RS2-KC96 ozonesonde.
|
|
