The Atmospheric Infrared Spectrum Atlas provides spectra for a wide range of molecules in Earth's atmosphere. This website includes zenith absorption/optical thickness and limb radiance spectra on fully interactive graphs which can be customised show specific molecules, spectral ranges and satellite bands.

This atmospheric correction method uses MODIS MCD43 BRDF product to get a coarse resolution simulation of earth surface. A model based on MODIS PSF is built to deal with the scale differences between MODIS and Sentinel 2 / Landsat 8. We uses the ECMWF CAMS prediction as a prior for the atmospheric states, coupling with 6S model to solve for the atmospheric parameters. We do not have topography correction and homogeneous surface is used without considering the BRDF effects.

Contact: Feng Yin (NCEO/UCL)

A 3D off-line chemical transport model that uses winds and temperatures from meteorological analyses (e.g. from the UK Met Office or ECMWF) to specify the atmospheric transport and temperatures and calculates the abundances of chemical species in the troposphere and stratosphere.

NCEO contact: Martyn Chipperfield (University of Leeds).

A global 3D chemical transport model for atmospheric composition driven by meteorological input from the Goddard Earth Observing System (GEOS) of the NASA Global Modeling and Assimilation Office.

NCEO contact: Paul Palmer (University of Edinburgh).

Observation System Simulation Experiments (OSSE) are a cost-effective numerical approach to realistically describe space-borne measurements and to evaluate their impact on current knowledge as part of preparing a science case for a particular space-borne mission; in our example experiment we quantify the impact of atmospheric measurements of a trace gas on improving our current prior understanding of surface fluxes (emission minus uptake) of that gas.

Contact: Liang Feng (University of Edinburgh)

26 PT sets over the spectral range 700–860 cm-1 (208–296 K and 7.5-760 Torr).

Contact: Jeremy Harrison (University of Leicester)

30 PT sets over the spectral range 730–1380 cm-1 (191–295 K and 7.5 –762 Torr).

Contact: Jeremy Harrison (University of Leicester)

32 PT sets over the spectral range 800-1270 cm-1 (190-294 K and 7.5-761 Torr).

Contact: Jeremy Harrison (University of Leicester)

27 PT sets over the spectral range 750-1600 cm-1 (191-296 K and 22-761 Torr).

Contact: Jeremy Harrison (University of Leicester)

27 PT sets over the spectral range 950-1500 cm-1 (188-294 K and 23-762 Torr).

Contact: Jeremy Harrison (University of Leicester)

12 PT sets over the spectral range 2600-3250 cm-1 (204-296 K and 51-761 Torr).

Contact: Jeremy Harrison (University of Leicester)

12 PT sets over the spectral range 877-1167 cm-1 (204-295 K and 50-761 Torr).

Contact: Jeremy Harrison (University of Leicester)

12 PT sets over the spectral range 880-1700 cm-1 (203-297 K and 50-760 Torr).

Contact: Jeremy Harrison (University of Leicester)

12 PT sets over the spectral range 2615-3300 cm-1 (195-296 K and 49-759 Torr).

Contact: Jeremy Harrison (University of Leicester)

19 PT sets over the spectral range 830-1950 cm-1 (194-298 K and 50-700 Torr).

Contact: Jeremy Harrison (University of Leicester)

The most widely used spectroscopic database for atmospheric remote sensing is HITRAN (HIgh-resolution TRANsmission). The spectroscopic line parameters, based on the Voigt lineshape profile, can be obtained from the HITRAN website. The Total Internal Partition Function (TIPS) program, distributed with the database, is required for the temperature dependence of the line intensities. HITRAN also contains a number of absorption cross-section datasets for larger molecules, whose spectra consist of an abundance of densely packed lines. NERC/NCEO-funded absorption cross-section datasets can be downloaded from this website.

Contact: Jeremy Harrison (University of Leicester)

12 PT sets over the spectral range 2540-3300 cm-1 (195-296 K and 40-763 Torr).

Contact: Jeremy Harrison (University of Leicester)

14 PT sets over the spectral range 2545-3315 cm-1 (194-297 K and 49-763 Torr).

Contact: Jeremy Harrison (University of Leicester)

The RFM is a line-by-line radiative transfer model. RFM maintenance and development is currently supported by NCEO. Extensive online documentation can be found on the Reference Forward Model website. Download the source code here.

Contact: Anu Dudhia (University of Oxford)

RTTOV is a very fast radiative transfer model for nadir-viewing applications. The source code can be obtained from the dedicated RTTOV website.

Contact: Richard Siddans (Science and Technology Facilities Council)