nonCciKeyword

EARTH SCIENCE > Atmosphere > Atmospheric Chemistry

20 record(s)

 

Type of resources

Keywords

Topics

INSPIRE themes

Contact for the resource

Provided by

Update frequencies

GEMET keywords

From 1 - 10 / 20
  • Microwave radiometer data at Halley Station, Antarctica, 2013-present

  • This dataset contains mesospheric ozone (O3) data acquired by the ground-based British Antarctic Survey''s Microwave Radiometer at Troll (BAS-MRT) in Antarctica (72 deg S, 2.5 deg E, 1270 amsl). The BAS radiometer has been designed in order to study the effects of energetic particle precipitation on the middle and upper atmosphere, using nitric oxide and ozone measurements, and the dynamical context using CO. This data set contains the O3 measurements. The data set covers the period from February 2008 to January 2010. O3 is measured for approximately 20 hours each day and profiles are retrieved every hour. The retrieved profiles cover the pressure range from 3 to 0.02 hPa (approximately 38 to 72 km), with an altitude resolution that varies from 10 km at 3 hPa (39 km) to 18 km at 0.7 hPa (66~km).

  • Monthly averaged total ozone values measured at Halley station, Antarctica. All measurements are in Dobson Units. These monthly averages are a flat average of any daily average values that exist for each given month; the daily averages are a flat average of the measurements obtained during a particular 24-hour period (UTC). The number of observations may vary from day to day. The Dobson ozone observing season at Halley begins at the end of August and ends in mid April; however, very early and late season observations are made with the Sun at low elevation, and are less accurate than those made during the main observing period of September 6 to April 6. The values for 1956/57 (MacDowall, J., 1962) and 1957-1973 (Farman, J. C. and Hamilton, R. A., 1975) have been approximately corrected from the original using the WMO recommended guidance (Komhyr, W. D., Mateer C. L. and Hudson, R. D., 1993) for the Bass-Paur ozone absorption coefficients. Ozone values from 1973 onwards have been calculated using the Bass-Paur coefficients. The approximation of a US standard atmosphere, which will differ from the Antarctic atmosphere, has been used and the assumed temperature used for the absorption coefficients may be inaccurate.

  • Total peroxy radical (HO2 and RO2) measurements were made during 2005. This work was carried out at Halley Station, as part of the Chemistry of the Antarctic Boundary Layer and the Interface with Snow (CHABLIS) project (2001-2006).

  • Air samples were collected at the Rothera Time-Series (RaTS) site, Marguerite Bay, during the 2008-2009 field season. These were collected in addition to the surface water samples, in order to allow for the calculation of the direction and rate of flux of the bromocarbons across the sea-to-air interface.

  • Condensation particle concentration measurements were collected at Halley Station using a Condensation Particle Counter (Model 3010) between Nov 2004 and Feb 2005. This work was carried out as part of the Chemistry of the Antarctic Boundary Layer and the Interface with Snow (CHABLIS) project (2001-2006).

  • Surface ozone measurements taken using a 2B-Technologies (Model 202) ozone analyzer, at CASLab (the Clean Air Sector Laboratory), Halley Station, between 2004 and 2005. The dataset lists O3 mixing ratios at 1-minute averages of 10 second data. This work was carried out as part of the Chemistry of the Antarctic Boundary Layer and the Interface with Snow (CHABLIS) project (2001-2006).

  • The dataset consists of carbon monoxide (CO) mixing ratios, measured using an Aerolaser fast CO monitor. Measurements were taken between 2004 and 2005 at CASLab (the Clean Air Sector Laboratory) at Halley Station. (See lineage for details on collection.) This work was carried out as part of the Chemistry of the Antarctic Boundary Layer and the Interface with Snow (CHABLIS) project (2001-2006).

  • Measurements were taken using an Aerolaser HCHO monitor at CASLab (the Clean Air Sector Laboratory), Halley Station, between May 2004 and April 2006. The dataset lists HCHO concentrations at 10-minute averaged intervals. This work was carried out as part of the Chemistry of the Antarctic Boundary Layer and the Interface with Snow (CHABLIS) project (2001-2006).

  • Dataset consists of black carbon concentration values. Measurements were gained using an AE16 aethalometer at the Clean Air Sector Laboratory (CASLab), Halley Station, between 27 Feb 2004 and 29 Nov 2005. This work was carried out as part of the Chemistry of the Antarctic Boundary Layer and the Interface with Snow (CHABLIS) project (2001-2006).