The Meteorological Research Flight (MRF) was a Met Office facility, which flew a well-instrumented C-130 Hercules aircraft for atmospheric research purposes. This dataset contains airborne atmospheric and chemistry measurements taken on board the Met Office C-130 Hercules aircraft flight A750 for the Atmospheric Chemistry and Transport of Ozone in the upper troposphere-lower stratosphere (UTLS) (ACTO) campaign. The flight was a transit from Boscombe to Prestwick. The main purpose was to reposition the aircraft at Prestwick for the ACTO detachment. The instruments were operated as an additional test. The data was also monitored for evidence of filaments of upper tropospheric / lower stratospheric air that had been forecast on the 3/5/2000. However, the forecast from 4/5/2000 had suggested that the air would have moved too far North. Thus as expected, there was no evidence of very dry, ozone-rich air, during the flight. There were several instrument errors prior to flight and these were not resolved during the flight. The peroxide instrument was not operated. The carbon monoxide was switched on but did not perform sufficiently to give any useful data. The PERCA operator was not happy with the performance of the instrument (low chain length). The PAN GC was operated on one channel only. The ozone instrument worked OK but it was not displayed correctly on HORACE. The instrument operator therefore made investigations towards the end of the flight in order to understand the problem. The remaining chemistry instrumentation (UEA NOxy, MRF NOx box and the UEA formaldehyde, Leeds hydrocarbon GC) all worked well. Meteorology The meteorological situation was dominated by a high pressure system that was centred to the North West of Scotland. A weak warm front was shown on the midnight analysis over the south of England: no rain was forecast on the PGM. Areas of stratocumulus and altocumulus cloud marked the front. No other notable cloud features were found during the flight.

The UK hourly rainfall data describes the rainfall amount (and duration from tilting syphon gauges) during the hour (or hours) ending at the specified time. The data also conatins precipitation amounts, however precipitation measured over 24 hours will not be stored. The data is collected by observation stations across the UK and transmitted within the following message types: NCM, AWSHRLY, DLY3208, SREW, SSER and WAHRAIN. The data spans from 1915 to present.

The global marine meteorological observations data contains marine meteorological values, such as wave heights and periods, wind speed and direction, present weather, and air and sea temperature, measured during the hour ending at the stated date and time. The data is collected by worldwide observation stations and transmitted within the following message types: Ship SYNOP, which is also referred to as FM 13-IX SHIP, FM 18-X BUOY, Light Vessel, Marid, Marine logbooks, NAVY, OWS, PLAT/RIG, and VOF. In this dataset the different message types are all described by the SHIP message name. Data are available from 1854 to present. The data consist of: Offshore wind (speed and direction) Weather (present, past) Cloud (amount, type, base amount, base height) Pressure (mean sea level) Visibility Temperature (air, dew-point, wetbulb, sea) Relative humidity Wave (direction, period, height) Wind-wave (period, height) Swell (direction, -wave period, height) Ship direction and distance Maximum gust speed and period The wind speed is given to the nearest knot, direction to the nearest 10 degrees, and the time of the maximum gust is given to the nearest 0.1 hour. The wind direction from which the wind blows, is measured in Degrees (true). The entry for an east wind is 090, for a south wind it is 180 and so on clockwise. Note that zero values in both wind speed and wind direction fields indicate that there was no wind blowing at the time of observation. The temperature and dew point are given to the nearest 0.1 degree Celsius, the pressure is given to the nearest 0.1 hectopascal, the cloud base height and the visibility are given to the nearest decametre. Cloud amount is reported in oktas. The past weather is recorded as a number between 0-9 which details what the weather has been like in the last 6 hours for observations at 00, 06, 12, 1800 UTC, the last 3 hours for observations at 03, 09, 15, 2100 UTC and the previous hour at any other times. The past weather is only recorded when a manual observation is done at the station. Marine reports are defined by position (latitude and longitude) and by time. Duplicates can exist at a specified position and time, e.g. when ships are alongside for bunkering, so the identifier of the ship or buoy is part of the primary key of the entity. A great many ships do not include a valid call sign in their reports; the call sign may be missing or invalid. When this occurs, Midas will substitute the call sign value “SHIP”.

The Airborne Arctic Stratospheric Expedition (AASE) which was based in Stavanger, Norway during January and February, 1989, was designed to study the production and loss mechanisms of ozone in the north polar stratospheric environment, and the effect on ozone distribution of the Arctic polar vortex and of the cold temperatures associated with the formation of Polar Stratospheric Clouds (PSC). This dataset contains measurements of chemical and dynamical parameters collected onboard the NASA ER-2 (for example, ClO, BrO, HCl, O3, NOx, N2, HNO3 and CH4, whole air samples and aerosol measurements).

CCMVal was a large international effort to improve understanding of Chemistry-Climate Models (CCMs) and their underlying GCMs (General Circulation Models) through process-oriented evaluation, along with discussion and coordinated analysis of science results. The first round of CCMVal (CCMVal-1) evaluated only a limited set of key processes in the CCMs, focusing mainly on dynamics and transport. This dataset contains CMAM model output from the WMO 2006 REF1 experiment run by the Canadian Ensemble Forecasts (MSC), University of Toronto and York University, Canada.

The Airborne Arctic Stratospheric Expedition (AASE) which was based in Stavanger, Norway during January and February, 1989, was designed to study the production and loss mechanisms of ozone in the north polar stratospheric environment, and the effect on ozone distribution of the Arctic polar vortex and of the cold temperatures associated with the formation of Polar Stratospheric Clouds (PSC). This dataset contains measurements from the meteorological meteorological measurement system on the NASA ER-2 Aircraft.

CCMVal was a large international effort to improve understanding of Chemistry-Climate Models (CCMs) and their underlying GCMs (General Circulation Models) through process-oriented evaluation, along with discussion and coordinated analysis of science results. The first round of CCMVal (CCMVal-1) evaluated only a limited set of key processes in the CCMs, focusing mainly on dynamics and transport. This dataset contains WACCM model output from the WMO 2006 REF2 experiment run by the National Center for Atmospheric Research (NCAR).

The Met Office deployed a Vaisala Radian LAP3000 915 MHz wind profiler at the Natural Environment Research Council's (NERC) Mesophere-Stratosphere-Troposphere (MST) Radar Facility site at Capel Dewi, near Absersywyth, Wales, from November 1999 to March 2002. This deployment was to co-locate this UHF boundary layer wind profiler with the NERC MST VHF wind profiling radar - giving a combined coverage between the two instruments from around 300m to 20 km. At the time the Met Office's 915 Mhz wind profiler was an integral part of the Met Office's UK "Operational Upper Air Network", providing high resolution wind information from just above the surface (around 300m) up to a maximum of 8 km, depending on the atmospheric conditions. The Capel Dewi site is located at 52.42 N, 4.01 W and a height of 92 m above mean sea-level. The site has a WMO id of 03501. The instrument's hight resolution is 60/200 m depending on the operational mode. It has a beam angle of 15.0 degrees and is operated with an averaging period of 30 minutes. This instrument was subsequently deployed at South Uist and then at its present location on the Isle of Man. This dataset contains vertical wind profiles from the Vaisala Radian LAP3000 915MHz wind profiler located at Capel Dewi.

The UK soil temperature data describes daily and hourly values of soil temperatures at depths of 5, 10, 20, 30, 50, and 100 centimetres. The measurements are recorded by observation stations across the UK and transmitted within NCM or DLY3208 messages. The data spans from 1900 to present.

This is a copy of The Berlin Stratospheric Data Series provided to the BADC by K. Labitzke and her collaborators (2002) as a CD from the Meteorological Institute, Free University Berlin. This data set contains temperature and geopotential height data on the 100, 50, 30, 10 mb pressure surfaces on a 5 to 5 degree horizontal resolution, produced at the Meteorological Institute, Free University of Berlin.