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Atmospheric conditions

198 record(s)

 

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From 1 - 10 / 198
  • Nitrous acid (HONO) mixing ratio measurements were made between 2004 and 2005. The dataset give HONO ratios (pptv) at 15 min averaging periods. This work was carried out at the Clean Air Sector Laboratory (CASLab) at Halley Station, as part of the Chemistry of the Antarctic Boundary Layer and the Interface with Snow (CHABLIS) project (2001-2006).

  • The data set comprises time series measurements from offshore pressure gauges mounted on the sea floor. The data holdings are approximately 250 observation months from 100 sites. The data have mainly been collected in the continental shelf seas around the British Isles. Data records contain date/time, total pressure and, occasionally, temperature. The sampling interval is typically 15 minutes or hourly, over deployment periods ranging from 1 to 6 months. Data were collected mainly by the Proudman Oceanographic Laboratory (POL), now the National Oceanography Centre (NOC) at Liverpool, and are managed by the British Oceanographic Data Centre (BODC).

  • NOx measurements were made, using a chemiluminescence analyser, between 2004 and 2005. This work was carried out at the Clean Air Sector Laboratory (CASLab) at Halley Station, Antarctica, as part of the Chemistry of the Antarctic Boundary Layer and the Interface with Snow (CHABLIS) project (2001-2006).

  • Actinic fluxes were measured using the BAS spectroradiometer, between 7 January 2005 and 10 February 2005. Measurements taken mostly relate to down-welling flux, but the spectroradiometer was periodically inverted to record up-welling flux. This work was carried out at the Clean Air Sector Laboratory (CASLab) at Halley Station, Antarctica, as part of the Chemistry of the Antarctic Boundary Layer and the Interface with Snow (CHABLIS) project (2001-2006). The dataset provides ratios given as j-values for jO1D, nitrogen dioxide (jNO2) and nitrous acid (jHONO), at approximate one-minute intervals.

  • Biologically relevant radiation has been recorded since February 1997 using a Bentham spectroradiometer at Rothera. The Bentham spectroradiometer is sited on the roof of the Bonner Laboratory at Rothera. It measures spectral global irradiance between 280 and 600 nm (wavelengths from below UV-B to the middle of the visible range) with a step size of 0.5 nm and a resolution of 1 nm. Scans are recorded at various time intervals depending on the time of day and season peaking at every 30 minutes while the sun is above the horizon from the beginning of September until the end of April. These scans can be used to measure the amount of solar radiation reaching the earth''s surface at Rothera. It provides particularly useful background data for studies on the effects of increased UV-B, due to the ozone hole, on the plants and microbes in regions around Rothera.

  • 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).

  • Airborne and model data collected during the ACCACIA - Aerosol-Cloud Coupling And Climate Interactions in the Arctic project. The dataset comprises airborne in situ measurements of cloud microphysical properties, the vertical structure of the boundary layer and aerosol properties, and the fluxes of solar and infra red radiation above, below, and within cloud. Data was collected on board the Facility for Airborne Atmospheric Measurements (FAAM) BAe-146 aircraft and the British Antarctic Survey (BAS) Masin aircraft. It also contains data from specially configured Met Office Unified Model runs. AMS and SP2 data measured on board the Research Ship James Clark Ross during ACCACIA is also available. This project is part of the NERC Arctic research programme. (NERC Reference: NE/I028858/1).

  • Temperature measurements were made between 2004 and 2005. The work was carried out at the Clean Air Sector Laboratory (Halley, Antarctica) as part of the CHABLIS project (2001-2006).

  • 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).