The Atmospheric Chemistry Studies in the Oceanic Environment (ACSOE) OXIdising Capacity of the Ocean Atmosphere (OXICOA) Free Tropospheric Experiment (FREETEX) Gas and Aerosol Data from Jungfraujoch High Alpine Research Station contains measurements of chemical species implicated in the control of ozone (O3, NOx, NOy, HNO3, PAN, CO, HO2 + RO2, HCHO, VOCs, etc.), at the Jungfraujoch High Alpine Research Station (3,580m above sea level) over a five-week period in 1996 and again in 1998. Jungfraujoch is located in the lower free troposphere during winter and very often in spring and autumn, during which ozone concentration increases, making it an ideal location to study ozone and peroxy radical chemistry observed in the free troposphere.

PDSI consists of global maps of monthly self-calibrating Palmer Drought Severity Index (scPDSI) which have been calculated for selected periods of time based on the CRU TS data sets. The PDSI datasets are produced by KMNI in partnership with the Climatic Research Unit (CRU) at the University of East Anglia. The Palmer Drought Severity Index (PDSI) is a measure of soil moisture availability that has been used extensively to study droughts and wet spells in the contiguous USA and elsewhere, particularly as the primary indicator of the severity and extent of recent droughts. Recently, the PDSI has become more popular as a drought metric in studies quantifying possible trends in future soil moisture availability and it has been used as the basis for reconstructing past variations in drought.

The aim of the GRAPE project was to produce a global cloud and aerosol dataset using a state-of-the-art physical retrieval of the entire duration of the Along Track Scanning Radiometer 2 (ATSR-2) mission (aboard ERS-2). This dataset will be compared and contrasted with existing climatologies (based on different instruments and very different retrieval algorithms). The GRAPE project was initially funded through the Clouds, Water Vapour and Climate (CWVC) Programme, a five-year NERC directed research programme. The dataset has been developed further within the National Centre for Earth Observation (NCEO) and now includes data from the Advanced Along Track Scanning Radiometer (AATSR). The GRAPE dataset contains cloud optical depth, aerosol optical depth (cloud free), cloud phase, cloud particle size, cloud top pressure, cloud fraction and cloud ice/water path along with associated error measurements.

The HadGEM1 model is the Met Office Hadley centre global environment model version 1. This version of the model includes a detailed representation of the atmosphere, land surface, ocean, and cryosphere. This dataset includes a control run and a number of climate change experiments. Part of the the UK Met Office Hadley Centre's contributions to the fourth assessment report of the IPCC (Intergovernmental Panel on Climate Change) was based on the HadGEM1 model. This dataset provides all the available data from the control integration (run with preindustrial levels of CO2 and other forcings) as well as output from a number of climate change experiments. The data is provided in the Met Office PP format, but tools are available to extract subsets in NetCDF and other formats.

Standard resolution radiosonde data from worldwide upper air stations over the period 1997 - present (Some European stations are available from 1990). The dataset consists of vertical profiles of temperature, dew-point temperature, wind speed and wind direction from the surface to approximately 20-30 km. Data are reported up to four times daily. The data are provided by the Met Office.

The Landsat 7 program uses the Enhanced Thematic Mapper plus (ETM+) and provides contiguous data from Landsat 1 program from the early 1970's to present (2012). Landsat-7 is the most recent of the series of Landsat satellites, having been launched on 15th April 1999. It has an anticipated mission lifetime of 5+ years. The spacecraft is about 14 feet long (4.3 meters) and 9 feet (2.8 meters) in diameter. It consists of a spacecraft bus, built by Lockheed Martin Missiles and Space in Valley Forge, Pa., and the Enhanced Thematic Mapper Plus (ETM+) instrument, developed by Raytheon Santa Barbara Remote Sensing, California. The ETM+ (extended thematic mapper) sensor is an eight band multi-spectral scanning radiometer providing high-resolution images of the earth, detecting visible, near-infrared, short wave and thermal infrared frequency bands. The orbit follows that of earlier Landsat satellites and thus provides continuity of earth surface coverage claimed to be unparalleled by any other instrument. It possesses a worldwide reference system operating to a tolerance of +- 0.05 degrees that catalogues the earth's surface into 57,784 scenes each 183km by 170 km. Landsat data is widely used in many fields including geology, agriculture, resource management, climate analysis etc. The program is jointly run by the National Aeronautics and Space Administration (NASA) and the US Geological Survey (USGS). The NERC Earth Observation Data Centre (NEODC) now also holds the data. Note: Gaining access to the Landsat 4/5 TM data will also automatically give you access to the Landsat 4/5 TM data also held at the NEODC

Data from the Advanced Very High Resolution Radiometer-3 (AVHRR-3) on board the Eumetsat Polar System (EPS) MetOp-B satellite. AVHRR-3 scans the Earth's surface in six spectral bands in the range of 0.58-12.5 microns, to provide day and night imaging of land, water and clouds and measurements of sea surface temperature, ice snow and vegetation cover. The instruments were provided by the National Oceanic and Atmospheric Administration (NOAA) and is flown on the EPS-METOP series of satellites. The NEODC currently archives the L1B data, which were acquired directly from EUMETSAT.

The Cambridge Chemical Assimilation Data was produced as part of the Assimilation of Remote-sensed Data for Applications in the Atmospheric and Oceanographic Sciences (ARDAAOS) Natural Environment Research Council (NERC) thematic programme. It presents Chemical assimilation data from multiple sources, which is processed into a common file format making it easy to compare data from the various field campaigns and satellite missions.

This dataset collection brings together data from instruments deployed within the UK's National Centre for Atmospheric Sciences's (NCAS) Atmospheric Measurements Facility (AMF). The AMF facilitates easy access to a wide range of quality assured data products and services as well as access to specialist instrumentation for ground based and airborne observation of the atmosphere, observatories, platforms, and laboratories, operated by dedicated facility Instrument Scientists. In addition to campaign deployments covered by this collection AMF also operates a number of long-term instruments which can be found under the NCAS long term observations dataset collection. This collection also brings together data from the AMF instruments when they were operated before being part of AMF. As such some datasets will refer to the instruments' former designations.

HiGEM (High Resolution Global Environmental Modelling) is a UK programme in between NERC (Natural Environment Research Council) and the Hadley Centre of the Met Office. The aim is to advance in the fidelity of simulations of the global environment by taking the new Met Office climate model (HadGEM1a) to unprecedented resolutions. The resulting simulations aim to improve our understanding of mechanisms of climate variability and change on timescales of days to centuries.