Summit, Greenland Balloon-Borne Ozonesonde Profile Measurment Program
Data transmission from the
ozonesonde back to receiving station.
Ozone Partial Pressure profile.
Location:Weekly balloon-borne ozone profiles are measured at The Greenland Environmental Observatory (GEOSummit, station code SUM) on the summit of the Greenland Ice Sheet: 72.6° North, 38.5° West: 3202 meters above sea level.
Date of Measurements:February 12, 2005 – current.
An ozonesonde consists of a Teflon air pump and electrochemical ozone sensor interfaced to a meteorological radiosonde The small piston pump bubbles ambient air into the sensor cell containing 3 milliliters of 1% potassium iodide solution. The reaction of ozone and iodide generates an electrical signal proportional to the amount of ozone. The radiosonde measures air temperature, pressure, relative humidity and transmits all of the ozone and weather data back to a ground receiving station during the 2 hour weather balloon ascent.
Total column ozone (given in Dobson Units) is calculated by integrating the ozone partial pressure profile up to the balloon burst altitude and adding a residual amount, based on climatological ozone tables to account for ozone above the balloon burst altitude. These polar ozonesonde profiles provide a detailed vertical measurement of ozone that can be made during low sun angle and dark time periods, when satellite ozone observations are limited. However, the cold, dark winter time will reduce the altitude burst elevation of the rubber weather balloons.Data files for the Summit ozonesondes can be found at ftp://ftp.cmdl.noaa.gov/ozwv/ozone/summit/100meter
Ozonesonde Measurement Campaign Participation:
ARCIONS: Arctic Intensive Ozonesonde Network Study
Dates: 2008, April 1-21 & June 25 – July 12 (daily ozonesondes) A North American and Arctic ozonesonde network launched daily ozonesondes in the high-latitudes to look at springtime polar outflow and summertime boreal forest fire impacts on tropospheric ozone budgets.
MATCH: Determination of Stratospheric Polar Ozone Losses
Dates: 2005-2008 (winter and early spring): The MATCH campaigns are coordinated by the Alfred Wegener Institute for Polar and Marine Research. 20-25 Arctic and high latitude sites launched ozonesondes at specific times during the spring to determine downwind chemical ozone loss in the stratosphere.