Sentences with phrase «using ozone measurements»

Not exact matches

From then on, scientists worldwide typically tracked ozone depletion using October measurements of Antarctic ozone.

Researchers are currently making these measurements using the Limb Profiler instrument, part of Ozone Mapping Profiler Suite (OMPS) instrument, currently flying on the joint NASA / National Oceanic and Atmospheric Administration (NOAA)-RRB- / Department of Defense Suomi National Polar - orbiting Partnership (Suomi NPP) satellite, launched in October 2011.

The Polar Environment Atmospheric Research Laboratory (PEARL) in Eureka, Nunavut, which made key measurements last winter used to detect and analyze the largest ozone hole ever detected over the Arctic, will cease year - round operations on April 30.

This method uses consistency between direct normal and diffuse horizontal measurements together with a special regression technique for retrieval of daily time series of column mean aerosol particle size, aerosol optical depth, NO2, ozone and water vapor column amounts together with the instrument's calibration constants.

Dobson measurements suffer from a temperature dependence of the ozone absorption coefficients used in the retrievals which might account for a seasonal variation in the error of ± 0.9 % in the middle latitudes and ± 1.7 % in the Arctic, and for systematic errors of up to 4 % [Bernhard et al., 2005].

The study also found that satellite measurements could be used as an early warning system to alert policy makers to incoming ozone levels one to three days ahead of time.

Published in the journal Geophysical Research Letters on Thursday, the study uses satellite observations to demonstrate that the decline in atmospheric chlorine that resulted from the implementation of the Montreal Protocol, enacted in 1989, has led to «about 20 percent less ozone depletion during the Antarctic winter than there was in 2005 — the first year that measurements of chlorine and ozone during the Antarctic winter were made by NASA's Aura satellite.»