We have started CFH-ECC special sonde observation at Equatorial Atmosphere Radar Site, Kototabang, Sumatra Island, Indonesia.

This observation aims to grasp the condition of the TTL (Tropical Tropopause Layer) and to understand Stratosphere-Troposphere Interactions during the Pre-YMC campaign.

The right side of photo (Blue box) is a CFH (Cryogenic Frost-point Hygrometer) and the left is an ECC ozone sonde.