Sentences with phrase «ozone measurements from»

We downloaded from the NASA Goddard Space Flight Center's website all of the available monthly averaged ozone measurements from the NASA Total Ozone Mapping Spectrometer (TOMS) satellite (August 1996 - November 2005).

Ozone measurements from the first week of March already show a region over the North Atlantic with very low ozone levels (< 250 Dobson units, versus minimum values of ~ 300 in the early 1980s).

Ozone measurements from the first week of March already show a region over the North Atlantic with very low ozone levels (< 250 Dobson units, versus minimum values of ~ 300 in the early 1980s).

For the ozone measurements, all the data we take go to an international database where ozone measurements from around the world are kept.

The researchers compared results from a model called GFDL - AM3 to ozone measurements from monitoring stations over the course of the last 35 years, from 1980 to 2014.

Not exact matches

Our products are derived from our core competencies in pressure measurement and control, flow measurement and control, gas and vapor delivery, gas composition analysis, residual gas analysis, leak detection, control and information technology, ozone generation and delivery, RF & DC power, reactive gas generation, vacuum technology, photonics, sub-micron positioning, vibration isolation and optics.

Measurements have shown that ozone depletion starts each year in late August, as Antarctica emerges from its dark winter, and the hole is fully formed by early October.

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

They analyzed ozone measurements taken from weather balloons and satellites, as well as satellite measurements of sulfur dioxide emitted by volcanoes, which can also enhance ozone depletion.

They then compared their yearly September ozone measurements with model simulations that predict ozone levels based on the amount of chlorine that scientists have estimated to be present in the atmosphere from year to year.

Even in the past measurements from the peripheral sections of the now investigated region showed minimal ozone values in the area of the upper troposphere, but not the consistently low values that have now been found across the entire depth of the troposphere.

The ozone concentrations in his measurements remained nearly constantly below the detection limit of approx. 10 ppbv in the entire vertical range from the surface of Earth to an altitude of around 15 kilometres.

Although low values at an altitude of around 15 kilometres were known from earlier measurements in the peripheral area of the tropical West Pacific, the complete absence of ozone at all heights was surprising.

The WMO reports the lowest ever measurements of Antarctic stratospheric ozone — 105 Dobson units — from the South Pole a few weeks ago.

Answer to # 10: Ozone values are *** VERY *** variable: even if there is a mean sinusoidal pattern over Europes latitudes (see http://www.meteo.be/english/pages/OzonEN.html or http://meteo.lcd.lu/dobson05.html) the variations from that mean trend are exceptional great: as such a local measurement of low values is never a hint to a lowering trend (and the opposite is true also...).

``... very little feedback came through to us until a telephone call from the United States embassy to say that Bob Watson was coming across, bringing some satellite pictures of the TOMS maps of ozone measurements, would I like to wander down to the embassy to have a look at them....»

Answer to # 10: Ozone values are *** VERY *** variable: even if there is a mean sinusoidal pattern over Europes latitudes (see http://www.meteo.be/english/pages/OzonEN.html or http://meteo.lcd.lu/dobson05.html) the variations from that mean trend are exceptional great: as such a local measurement of low values is never a hint to a lowering trend (and the opposite is true also...).

The measurements were made from 1979 — 2003 by NASA's Total Ozone Mapping Spectrometer (TOMS) instruments, and from 2004 — present by the Royal Netherlands Meteorological Institute's Ozone Monitoring Instrument (OMI) that flies on NASA's Aura satellite.

In a new development, the ozone profile measurements from seven ESA's and NASA's satellite instruments are merged in a climate data record, which covers more than 30 years, from 1984 to 2016.

Heue, K. - P., Coldewey - Egbers, M., Delcloo, A., Lerot, C., Loyola, D., Valks, P., and van Roozendael, M.: Trends of tropical tropospheric ozone from 20 years of European satellite measurements and perspectives for the Sentinel - 5 Precursor, Atmos.

Ozone data set categories include total column ozone and vertical profile data from lidar measurements, ozonesonde flights, and the Umkehr technOzone data set categories include total column ozone and vertical profile data from lidar measurements, ozonesonde flights, and the Umkehr technozone and vertical profile data from lidar measurements, ozonesonde flights, and the Umkehr technique.

Archived total ozone column measurements from the World Meterological Organization (WMO)- Global Atmosphere Watch (GAW) network routinely deposited at the World Ozone and Ultraviolet Radiation Data Centre (WOUDC) in Toronto, Canada (http://www.woudc.org) are utilized for the ground - based measurements referozone column measurements from the World Meterological Organization (WMO)- Global Atmosphere Watch (GAW) network routinely deposited at the World Ozone and Ultraviolet Radiation Data Centre (WOUDC) in Toronto, Canada (http://www.woudc.org) are utilized for the ground - based measurements referOzone and Ultraviolet Radiation Data Centre (WOUDC) in Toronto, Canada (http://www.woudc.org) are utilized for the ground - based measurements reference.

The second factor is the insulating effect of the atmosphere of which well over 90 % results from atmospheric water in the form of clouds and water vapour with the remaining 10 % due primarily from CO2 and ozone with just a slightly detectable effect from methane and a trivial effect from all the other gases named in tyhe Kyoto Accord that is so small it can't even be detected on measurements of the Earth's radiative spectrum.

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].

Fioletov, V. E., D. W. Tarasick, and I. Petropavlovskikh, Estimating ozone variability and instrument uncertainties from SBUV (/ 2), ozonesonde, Umkehr, and SAGE II measurements: Shortterm variations, J. Geophys.

Randall et al. [1998, 2001] presented evidence from the Polar Ozone and Aerosol Measurement (POAM) II and III instruments for stratospheric O3 reductions caused by the EPP IE, showing depletions of 40 — 45 % in middle stratospheric O3 mixing ratios.

The data basis of observations are total ozone columns measurements from three satellite borne instruments: the European satellite sensors GOME (ERS - 2), SCIAMACHY (ENVISAT), and GOME - 2 (METOP - A) are combined and added up to a continuous time series starting in June 1995.

Our results, simulated with a radiative - photochemical model, are consistent with contemporaneous measurements of ozone from the Aura - MLS satellite, although the short time period makes precise attribution to solar effects difficult.

Satellites and weather balloon measurements show that the stratosphere, the layer from 10 to 50 kilometres above the Earth, is indeed cooling (although this is partly due to the depletion of the ozone layer).

Elimination of OMPS - Limb from NPOESS means that measurements of the complete ozone profile will end upon completion of the Aura mission (launched in 2004 with a 5 - year mission design lifetime).

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.»