Search Results - "REDONDAS, A"

Evaluation of the use of five laboratory-determined ozone absorption cross sections in Brewer and Dobson retrieval algorithms by Redondas, A, Evans, R, Stuebi, R, Köhler, U, Weber, M

“…The primary ground-based instruments used to report total column ozone (TOC) are Brewer and Dobson spectrophotometers in separate networks. These instruments…”
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Recent tropospheric ozone changes – A pattern dominated by slow or no growth by Oltmans, S.J., Lefohn, A.S., Shadwick, D., Harris, J.M., Scheel, H.E., Galbally, I., Tarasick, D.W., Johnson, B.J., Brunke, E.-G., Claude, H., Zeng, G., Nichol, S., Schmidlin, F., Davies, J., Cuevas, E., Redondas, A., Naoe, H., Nakano, T., Kawasato, T.

“…Longer-term (i.e., 20–40 years) tropospheric ozone (O3) time series obtained from surface and ozonesonde observations have been analyzed to assess possible…”
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Metrology of ground-based satellite validation: co-location mismatch and smoothing issues of total ozone comparisons by Verhoelst, T, Granville, J, Hendrick, F, Köhler, U, Lerot, C, Pommereau, J.-P, Redondas, A, Van Roozendael, M, Lambert, J.-C

“…Comparisons with ground-based correlative measurements constitute a key component in the validation of satellite data on atmospheric composition. The error…”
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Performance of the ground-based total ozone network assessed using satellite data by Fioletov, V. E., Labow, G., Evans, R., Hare, E. W., Köhler, U., McElroy, C. T., Miyagawa, K., Redondas, A., Savastiouk, V., Shalamyansky, A. M., Staehelin, J., Vanicek, K., Weber, M.

“…Dobson and Brewer spectrophotometer and filter ozonometer data available from the World Ozone and Ultraviolet Data Centre (WOUDC) were compared with satellite…”
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Quantification of ozone reductions within the Saharan air layer through a 13-year climatologic analysis of ozone profiles by Andrey, J., Cuevas, E., Parrondo, M.C., Alonso-Pérez, S., Redondas, A., Gil-Ojeda, M.

“…Ozone (O3) reduction caused by dust particles is a challenging topic that has not been sufficiently investigated. Previous studies have provided limited…”
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Long-term changes in tropospheric ozone by Oltmans, S.J., Lefohn, A.S., Harris, J.M., Galbally, I., Scheel, H.E., Bodeker, G., Brunke, E., Claude, H., Tarasick, D., Johnson, B.J., Simmonds, P., Shadwick, D., Anlauf, K., Hayden, K., Schmidlin, F., Fujimoto, T., Akagi, K., Meyer, C., Nichol, S., Davies, J., Redondas, A., Cuevas, E.

“…Tropospheric ozone changes are investigated using a selected network of surface and ozonesonde sites to give a broad geographic picture of long-term…”
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Comments to the Article by Thuillier et al. “The Infrared Solar Spectrum Measured by the SOLSPEC Spectrometer Onboard the International Space Station” on the Interpretation of Ground-based Measurements at the Izaña Site by Bolsée, D., Pereira, N., Cuevas, E., García, R., Redondas, A.

“…Thuillier et al. ( Solar Phys. 290 , 1581, 2015 ) article compares ATLAS-3 reference composite solar spectral irradiance (SSI) with more recent spatial…”
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Atmospheric nanoparticle observations in the low free troposphere during upward orographic flows at Izaña Mountain Observatory by Rodríguez, S., González, Y., Cuevas, E., Ramos, R., Romero, P. M., Abreu-Afonso, J., Redondas, A.

“…This study investigates the processes and conditions favouring the formation of nanoparticles (diameter<10 nm) which are frequently observed on high mountains…”
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Comparison of measured and modelled spectral UV irradiance at Izaña high mountain station: estimation of the underlying effective albedo by García, R. D., Cachorro, V. E., Cuevas, E., Toledano, C., Redondas, A., Blumthaler, M., Benounna, Y.

“…ABSTRACT In this work, we have carried out a comparison study between measured and modelled direct and global ultraviolet (UV) (300–400 nm) spectral…”
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Improved retrieval of nitrogen dioxide (NO 2 ) column densities by means of MKIV Brewer spectrophotometers by Diémoz, H, Siani, A. M, Redondas, A, Savastiouk, V, McElroy, C. T, Navarro-Comas, M, Hase, F

“…A new algorithm to retrieve nitrogen dioxide (NO2) column densities using MKIV ("Mark IV") Brewer spectrophotometers is described. The method includes several…”
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Investigating the long-term evolution of subtropical ozone profiles applying ground-based FTIR spectrometry by García, O. E, Schneider, M, Redondas, A, González, Y, Hase, F, Blumenstock, T, Sepúlveda, E

“…This study investigates the long-term evolution of subtropical ozone profile time series (1999–2010) obtained from ground-based FTIR (Fourier Transform…”
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Accurate Determination of the TOA Solar Spectral NIR Irradiance Using a Primary Standard Source and the Bouguer–Langley Technique by Bolsée, D., Pereira, N., Decuyper, W., Gillotay, D., Yu, H., Sperfeld, P., Pape, S., Cuevas, E., Redondas, A., Hernandéz, Y., Weber, M.

“…We describe an instrument dedicated to measuring the top of atmosphere (TOA) solar spectral irradiance (SSI) in the near-infrared (NIR) between 600 nm and…”
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Comparison of ground-based FTIR and Brewer O3 total column with data from two different IASI algorithms and from OMI and GOME-2 satellite instruments by Viatte, C, Schneider, M, Redondas, A, Hase, F, Eremenko, M, Chelin, P, Flaud, J.-M, Blumenstock, T, Orphal, J

“…An intercomparison of ozone total column measurements derived from various platforms is presented in this work. Satellite data from Infrared Atmospheric…”
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Quality assessment of O3 profiles measured by a state-of-the-art ground-based FTIR observing system by E. Cuevas, A. Redondas, T. Blumenstock, F. Hase, M. Schneider

“…Ground-based Fourier Transform Infra-Red (FTIR) measurements are an important component of the global atmospheric monitoring system. Their essential role in…”
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Comparison of ground-based Brewer and FTIR total column O3 monitoring techniques by T. Blumenstock, C. Guirado, F. Hase, A. Redondas, M. Schneider, E. Cuevas

“…We compare the currently most precise, ground-based total O3 measurement techniques: Brewer and FTIR. We give an overview of the similarities and the…”
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Quality assessment of O 3 profiles measured by a state-of-the-art ground-based FTIR observing system by Schneider, M., Hase, F., Blumenstock, T., Redondas, A., Cuevas, E.

“…Ground-based Fourier Transform Infra-Red (FTIR) measurements are an important component of the global atmospheric monitoring system. Their essential role in…”
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Quality assurance of the solar UV network in the Antarctic by Lakkala, K., Redondas, A., Meinander, O., Torres, C., Koskela, T., Cuevas, E., Taalas, P., Dahlback, A., Deferrari, G., Edvardsen, K., Ochoa, H.

“…Measuring ultraviolet radiation in the Antarctic region, where weather conditions are extremely challenging, is a demanding task. Proper quality control of the…”
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SUSPEN intercomparison of ultraviolet spectroradiometers by Bais, A. F., Gardiner, B. G., Slaper, H., Blumthaler, M., Bernhard, G., McKenzie, R., Webb, A. R., Seckmeyer, G., Kjeldstad, B., Koskela, T., Kirsch, P. J., Gröbner, J., Kerr, J. B., Kazadzis, S., Leszczynski, K., Wardle, D., Josefsson, W., Brogniez, C., Gillotay, D., Reinen, H., Weihs, P., Svenoe, T., Eriksen, P., Kuik, F., Redondas, A.

“…Results from an intercomparison campaign of ultraviolet spectroradiometers that was organized at Nea Michaniona, Greece, July 1–13, 1997, are presented…”
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Ozone profiles and total column amounts derived at Izaña, Tenerife Island, from FTIR solar absorption spectra, and its validation by an intercomparison to ECC-sonde and Brewer spectrometer measurements by Schneider, M., Blumenstock, T., Hase, F., Höpfner, M., Cuevas, E., Redondas, A., Sancho, J.M.

“…Since February 1999 high-resolution Fourier transform infrared (FTIR) solar absorption spectra are recorded at the Izaña Observatory ( 28 ∘ 18 ′ N , 16 ∘ 29 ′…”
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Intercomparison of aerosol optical depth measurements in the UVB using Brewer Spectrophotometers and a Li-Cor Spectrophotometer by Gröbner, J., Vergaz, R., Cachorro, V. E., Henriques, D. V., Lamb, K., Redondas, A., Vilaplana, J. M., Rembges, D.

“…The first Iberian UV radiation intercomparison was held at “El Arenosillo”‐Huelva station of the Instituto Nacional de Técnica Aeroespatial (INTA) from…”
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