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The Soundings of Ozone and Water in the Equatorial Region (SOWER) Pacific Mission has been running on a campaign basis since 1998 at various sites in the tropical eastern, central, and western Pacific. Balloon-borne ozone and water vapor instruments are the primary tool to improve our knowledge on the distribution and variability of ozone and water vapor in the tropical troposphere and stratosphere. The motivations in the beginning were to establish the climatology and zonal and temporal variability in ozone and water vapor and to collect correlative data for satellite data validation. Recent scientific focus is placed on the water vapor controlling processes in the Tropical Tropopause Layer (TTL) particularly over the tropical western Pacific in northern winter season.

Information on SOWER IOP Nov 2016

Information on SOWER IOP Jan 2016

Information on SOWER-CRYO IOP 2015

Information on SOWER IOP 2014