Analysis of Rosetta/VIRTIS spectra of earth using observations from ENVISAT/AATSR, TERRA/MODIS and ENVISAT/SCIAMACHY, and radiative-transfer simulations by Hurley, J, Irwin, P, Adriani, A, Moriconi, M, Oliva, F, Capaccioni, F, Smith, A, Filacchione, G, Tosi, F, Thomas, G

“…In this paper, measurements taken by VIRTIS in November 2009 are compared with suitable coincident data from Earth-observing instruments (ESA-ENVISAT/AATSR and SCIAMACHY, and EOS-TERRA/MODIS). Radiative transfer simulations using NEMESIS (Irwin et al., 2008) are fit to the fly-by data taken by VIRTIS, using representative atmospheric and surface parameters. …”

Analysis of Rosetta/VIRTIS spectra of earth using observations from ENVISAT/AATSR, TERRA/MODIS and ENVISAT/SCIAMACHY, and radiative-transfer simulations by Hurley, J, Irwin, P, Adriani, A, Moriconi, M, Oliva, F, Capaccioni, F, Smith, A, Filacchione, G, Tosi, F, Thomas, G

“…In this paper, measurements taken by VIRTIS in November 2009 are compared with suitable coincident data from Earth-observing instruments (ESA-ENVISAT/AATSR and SCIAMACHY, and EOS-TERRA/MODIS). Radiative transfer simulations using NEMESIS (Irwin et al.; 2008) are fit to the fly-by data taken by VIRTIS, using representative atmospheric and surface parameters. …”

The inter-comparison of major satellite aerosol retrieval algorithms using simulated intensity and polarization characteristics of reflected light by Kokhanovsky, A, Deuze, J, Diner, D, Dubovik, O, Ducos, F, Emde, C, Garay, M, Grainger, R, Heckel, A, Herman, M, Katsev, I, Keller, J, Levy, R, North, P, Prikhach, A, Rozanov, V, Sayer, A, Ota, Y, Tanre, D, Thomas, G, Zege, E

“…Therefore, the quality of a priori information plays a central role in any retrieval process (apart from the cloud screening procedure and the forward radiative transfer model, which to be most accurate should include the treatment of light polarization and molecular-aerosol coupling). …”

SO2 as a possible proxy for volcanic ash in aviation hazard avoidance by Sears, T, Thomas, G, Carboni, E, Smith, A, Grainger, R

“…The detection threshold of the AATSR ash flag is also investigated using radiative transfer calculations, allowing the threshold of the IASI flag to be inferred, and these are related to the ash contamination levels. © 2013. …”

Parallel retrieval of aerosol and cloud by Povey, A, Poulsen, C, McGarragh, G, Thomas, G, Oliver, S, Schlundt, C, Stapelberg, S, Martin, S, Grainger, R

“…The Optimal Retrieval of Aerosol and Cloud (ORAC) is a single algorithm that can retrieve the aerosol or cloud properties consistent with a single measurement. By performing radiative transfer calculations via look-up tables, various types of particle can be considered in parallel — such as liquid-phase cloud, different models of ice nuclei, and various clean and polluted aerosols — by simply running the program repeatedly using tables assuming different microphysical properties and vertical distributions. …”

The Community Cloud retrieval for CLimate (CC4CL). Part II: The optimal estimation approach by McGarragh, G, Poulsen, C, Thomas, G, Povey, A, Sus, O, Stapelberg, S, Schlundt, C, Proud, S, Christensen, M, Stengel, M, Hollmann, R, Grainger, R

“…Key to this method is the forward model which, includes the 5 clear-sky model, the liquid water and ice cloud models, the surface model including a bidirectional reflectance distribution function (BRDF), the “fast” radiative transfer solution (which includes a multiple scattering treatment) All of these components and their assumptions and limitations will be discussed in detail. …”

Unveiling aerosol–cloud interactions – Part 1: Cloud contamination in satellite products enhances the aerosol indirect forcing estimate by Christensen, M, Neubauer, D, Poulsen, C, Thomas, G, McGarragh, G, Povey, A, Proud, S, Grainger, R

“…Aerosol retrievals near clouds can be influenced by stray cloud particles in areas assumed to be cloud-free, particle swelling by humidification, shadows and enhanced scattering into the aerosol field from (3-D radiative transfer) clouds. To screen for this contamination we have developed a new cloud–aerosol pairing algorithm (CAPA) to link cloud observations to the nearest aerosol retrieval within the satellite image. …”

The Community Cloud retrieval for CLimate (CC4CL). Part II: The optimal estimation approach by McGarragh, G, Poulsen, C, Thomas, G, Povey, A, Sus, O, Stapelberg, S, Schlundt, C, Proud, S, Christensen, M, Stengel, M, Hollmann, R, Grainger, R

“…Key to this method is the forward model, which includes the clear-sky model, the liquid water and ice cloud models, the surface model including a bidirectional reflectance distribution function (BRDF), and the "fast" radiative transfer solution (which includes a multiple scattering treatment). …”

Cloud_cci ATSR-2 and AATSR data set version 3: a 17-year climatology of global cloud and radiation properties by Poulsen, C, McGarragh, G, Thomas, G, Stengel, M, Christensen, M, Povey, A, Proud, S, Carboni, E, Hollmann, R, Grainger, R

“…The cloud property retrievals are accompanied by high-resolution top- and bottom-of-atmosphere shortwave and longwave fluxes that have been derived from the retrieved cloud properties using a radiative transfer model. The fluxes were generated for all-sky and clear-sky conditions. …”