Dr. J. Pablo Ortiz de Galisteo

@article{VAQUEROMARTINEZ2017,

title = {Inter-comparison of integrated water vapor from satellite instruments using reference GPS data at the Iberian Peninsula},

author = {Javier Vaquero-Martínez and Manuel Antón and José Pablo Ortiz de Galisteo and Victoria E. Cachorro and Pablo Álvarez-Zapatero and Roberto Román and Diego Loyola and Maria João Costa and Huiquin Wang and Gonzalo González Abad and Stefan Noël},

url = {http://www.sciencedirect.com/science/article/pii/S0034425717304406},

doi = {https://doi.org/10.1016/j.rse.2017.09.028},

issn = {0034-4257},

year  = {2018},

date = {2018-01-01},

journal = {Remote Sensing of Environment},

volume = {204},

pages = {729-740},

abstract = {This paper focuses on the inter-comparison of integrated water vapor (IWV) products derived from the following satellite instruments: Global Ozone Monitoring Instrument (GOME-2), Moderate-Resolution Imaging Spectroradiometer (MODIS) on the Terra and Aqua satellites, Ozone Monitoring Instrument (OMI), Spining Enhanced Visible and InfraRed Imager (SEVIRI), Atmospheric Infrared Sounder (AIRS), and Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY). IWV data from GPS in nine ground-based stations located in the Iberian Peninsula are used as reference. The study period extends from 2007 to 2012. The results show that, in general, OMI has good accuracy (pseudomedian of the relative differences between OMI and GPS IWV of ( ?0.7 ± 1.1)%). However, OMI, SCIAMACHY and AIRS show higher inter-quartile range (IQR) (which indicates lower precision) than the rest of satellite instruments. Both MODIS satellite instruments and SEVIRI products tend to slightly underestimate reference IWV data while GOME-2 exhibits a notable overestimation (16.7 ± 0.8%). All satellite instruments showed a tendency to reduce IWV extreme values: low IWV is overestimated while high IWV is underestimated. As for the influence of solar zenith angle (SZA), it can be observed that GOME-2 strongly overestimates the reference for high SZA values (by around 60% for SZA 60 ? 80°). OMI shows, however, a high IQR for high SZA values. Both MODIS instruments show an increase in the pseudomedian of relative differences and IQR with SZA at daytime, with more stable values at night. Seasonal dependence is mainly due to the SZA and IWV typical values in each season. In general, in summer the tendency is to underestimate with low IQR (which happens when IWV is high and SZA is low), and in winter the trend is to overestimate with high IQR (which happens when IWV is low and SZA is high). SCIAMACHY shows a high pseudomedian in summer and autumn, and lower in winter and spring. It must be noted that GOME-2 shows a higher overestimation and OMI shows a higher IQR than other satellite instruments in winter and autumn. The influence of clouds was also studied, showing an increase of IQR as cloudiness increases in all satellites. Pseudomedian also worsens as cloudiness increases, generally},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Vaquero2018AtmosRes,

title = {Water vapor radiative effects on short-wave radiation in Spain},

author = {J. Vaquero-Martínez; M. Antón; J.P. Ortíz de Galisteo; R. Román: V.E. Cachorro},

url = {https://www.sciencedirect.com/science/article/pii/S0169809517309973},

doi = {10.1016/j.atmosres.2018.02.001},

year  = {2018},

date = {2018-01-01},

journal = {Atmospheric Research},

volume = {205},

pages = {18-25},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{VAQUEROMARTINEZ2017214,

title = {Validation of MODIS integrated water vapor product against reference GPS data at the Iberian Peninsula},

author = {Javier Vaquero-Martínez and Manuel Antón and José Pablo Ortiz de Galisteo and Victoria E. Cachorro and Maria João Costa and Roberto Román and Yasmine S. Bennouna},

url = {http://www.sciencedirect.com/science/article/pii/S0303243417301472},

doi = {https://doi.org/10.1016/j.jag.2017.07.008},

issn = {0303-2434},

year  = {2017},

date = {2017-12-01},

journal = {International Journal of Applied Earth Observation and Geoinformation},

volume = {63},

number = {Supplement C},

pages = {214 - 221},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{VAQUEROMARTINEZ2017857,

title = {Validation of integrated water vapor from OMI satellite instrument against reference GPS data at the Iberian Peninsula},

author = {Javier Vaquero-Martínez and Manuel Antón and José Pablo Ortiz de Galisteo and Victoria E. Cachorro and Huiqun Wang and Gonzalo González Abad and Roberto Román and Maria João Costa},

url = {http://www.sciencedirect.com/science/article/pii/S0048969716327176},

doi = {10.1016/j.scitotenv.2016.12.032},

issn = {0048-9697},

year  = {2017},

date = {2017-01-01},

journal = {Science of The Total Environment},

volume = {580},

pages = {857 - 864},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Roman_STOTEN2015_vapour,

title = {Comparison of total water vapour column from GOME-2 on MetOp-A against ground-based GPS measurements at the Iberian Peninsula},

author = { R. Román and M. Anton and V. E. Cachorro and D. Loyola and J. P. O. d. Galisteo and A. d. Frutos and P. M. Romero-Campos},

doi = {10.1016/j.scitotenv.2015.06.124},

year  = {2015},

date = {2015-01-01},

journal = {Science of Total Environment},

volume = {533},

pages = {317-328},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{QJ:QJ2146,

title = {Analysis of the annual cycle of the precipitable water vapour over Spain from 10-year homogenized series of GPS data},

author = { J. P. Ortiz de Galisteo and Y. Bennouna and C. Toledano and V. Cachorro and P. Romero and M. I. Andrés and B. Torres},

url = {http://dx.doi.org/10.1002/qj.2146},

doi = {10.1002/qj.2146},

year  = {2014},

date = {2014-01-01},

journal = {Quarterly Journal of the Royal Meteorological Society},

volume = {140},

number = {679},

pages = {397—406},

publisher = {John Wiley & Sons, Ltd.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Bennouna2011ayac,

title = {The evaluation of the integrated water vapour annual cycle over the Iberian Peninsula from EOS-MODIS against different ground-based techniques},

author = { Y. S. Bennouna and B. Torres and V. E. Cachorro and J. P. Ortiz de Galisteo and C. Toledano},

doi = {10.1002/qj.2080},

year  = {2013},

date = {2013-01-01},

journal = {Quarterly Journal of the Royal Meteorological Society},

volume = {139},

pages = {1935-1956},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{BENOUNNA2013AIP,

title = {The annual cycle of total precipitable water vapor derived from different remote sensing techniques: An application to several sites of the Iberian Peninsula},

author = {Y.S. Bennouna, B. Torres, V.E. Cachorro, J.P. Ortiz De Galisteo, C. Toledano, A. Berjón, D. Fuertes, R. González, A. De Frutos},

year  = {2013},

date = {2013-01-01},

journal = {AIP Conference Proceedings},

volume = {1531},

pages = {296-299},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Toledano2011b,

title = {Aerosol properties of the Eyjafjallajökull ash derived from Sun photometer and satellite observations over the Iberian Peninsula},

author = { C. Toledano and Y. Bennouna and V. Cachorro and P. Ortiz de Galisteo and A. Stohl and K. Stebel and N. I. Kristiansen and F. J. Olmo and H. Lyamani and M. A. Obregón and V. Estelles and F. Wagner and J. M. Baldasano and Y. González-Castanedo and L. Clarisse and A. M. de Frutos},

doi = {10.1016/j.atmosenv.2011.09.072},

year  = {2012},

date = {2012-01-01},

journal = {Atmospheric Environment},

volume = {48},

pages = {22-32},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Toledano2011c,

title = {Overview of Sun Photometer Measurements of Aerosol Properties in Scandinavia and Svalbard},

author = { C. Toledano and V. Cachorro and M. Gausa and K. Stebel and V. Aaltonen and A. Berjón and J. P. Ortiz de Galisteo and A. M. de Frutos and . Y. Bennouna and S. Blindheim and C. L. Myhre and G. Zibordi and C. Wehrli and S. Kratzer and B. Hakansson and T. Carlund and G. de Leeuw and A. Herber and B. Torres},

url = {http://www.sciencedirect.com/science/article/pii/S1352231011010818},

doi = {10.1016/j.atmosenv.2011.10.022},

year  = {2012},

date = {2012-01-01},

journal = {Atmospheric Environment},

volume = {52},

pages = {18-28},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{OrtizdeGalisteo2011,

title = {Diurnal cycle of precipitable water vapor over Spain},

author = { J. P. Ortiz de Galisteo and V. Cachorro and C. Toledano and B. Torres and N. Laulainen and Y. Bennouna and A. de Frutos},

doi = {10.1002/qj.811},

year  = {2011},

date = {2011-01-01},

journal = {Quarterly Journal of the Royal Meteorological Society},

volume = {137},

pages = {948-958},

abstract = {Knowledge of the diurnal cycle of precipitable water vapor (PWV) is very limited owing to the lack of data with sufficient temporal resolution. Currently,GPS receivers have proven to be a suitable technique to determine PWV diurnal variations. In this study, the annual and seasonal diurnal cycles of PWV have been obtained from GPS data for 10 locations over Spain. The minimum value of PWV is reached approximately at the same time at all the stations, ?0430–0530 UTC, whereas the maximum is reached in the second half of the day, but with a larger dispersion of its occurrence between stations. The annual sub-daily variability ranges from 0.41 to 1.35 mm (3–7%). The highest values are recorded at the stations on the Mediterranean coast, with a doubling of the values of the stations on the Atlantic coast or inland. The winter cycle is quite similar at all locations, whereas in summer local effects are felt strongly, making the diurnal cycle quite different between stations. ThePWVmean diurnal cycle is strongest in summer and weakest in spring, with a sub-daily variability of 1.34 and 0.66 mm respectively. Harmonic analysis shows that the first two harmonics can explain 97% of the variance. The diurnal (24 h) harmonic explains 85% of the variance, has mean amplitude of 0.40 mm, and the peak time is from early afternoon to evening. The semi-diurnal (12 h) harmonic is weaker, with an amplitude of 0.13 mm, and peak time between 0400 and 1000 UTC. The diurnal cycle of temperature alone would be a proxy for PWV cycle during the night, but not during the daytime. The breeze regime is the main factor responsible for the phase lag between PWV and temperature cycles during daytime. No clear correlation between the daily cycle of precipitation and PWV has been found.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{OrtizdeGalisteo2010c,

title = {Improvement in PWV estimation from GPS due to the absolute calibration of antenna phase center variations},

author = {Ortiz de Galisteo, J. P. 

and Toledano, C. 

and Cachorro, V. 

and Torres, B.},

url = {https://doi.org/10.1007/s10291-010-0163-y},

doi = {10.1007/s10291-010-0163-y},

issn = {1521-1886},

year  = {2010},

date = {2010-09-01},

journal = {GPS Solutions},

volume = {14},

number = {4},

pages = {389--395},

abstract = {Climatology of column-integrated atmospheric water vapor over Spain has been carried out by means of three techniques: soundings, sun photometers and GPS receivers. Comparing data from stations equipped with more than one of these instruments, we found that a large discontinuity occurred on November 6, 2006, in the differences between the data series from GPS receivers and those from the other two techniques. Prior to that date, the GPS data indicate a wet bias of 2--3 mm for all stations when compared with sounding or photometer data, whereas after that date this bias practically reduces to zero. The root mean square error also decreases about half of its value. On November 6, 2006, the International GNSS Service adopted an absolute calibration model for the antennas of the GPS satellites and receivers instead of the relative one. This change is expected to be an improvement, increasing the accuracy of station position determination and consequently benefiting post-processing products such as zenith total delay from which the atmospheric water vapor content is calculated.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{OrtizdeGalisteo2010,

title = {Improvement of precipitable water vapor from GPS due to the absolute calibration of the phase center variations of the antennas},

author = { J. P. Ortiz de Galisteo and C. Toledano and V. E. Cachorro and B. Torres},

doi = {10.1007/s10291-010-0163-y},

year  = {2010},

date = {2010-01-01},

journal = {GPS Solutions},

volume = {14},

pages = {389-395},

abstract = {Climatology of column-integrated atmospheric water vapor over Spain has been carried out by means of three techniques: soundings, sun photometers and GPS receivers. Comparing data from stations equipped with more than one of these instruments, we found that a large discontinuity occurred on November 6, 2006, in the differences between the data series from GPS receivers and those from the other two techniques. Prior to that date, the GPS data indicate a wet bias of 2–3 mmfor all stations when compared with sounding or photometer data, whereas after that date this bias practically reduces to zero. The root mean square error also decreases about half of its value. On November 6, 2006, the International GNSS Service adopted an absolute calibration model for the antennas of the GPS satellites and receivers instead of the relative one. This change is expected to be an improvement, increasing the accuracy of station position determination and consequently benefiting postprocessing products such as zenith total delay from which the atmospheric water vapor content is calculated.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Torres2010,

title = {Precipitable water vapor characterization in the Gulf of Cadiz region (southwestern Spain) based on Sun photometer, GPS, and radiosonde data},

author = { B. Torres and V. E. Cachorro and C. Toledano and J. P. Ortiz de Galisteo and A. Berjon and A. M. de Frutos and Y. Bennouna and N. Laulainen},

doi = {10.1029/2009JD012724},

year  = {2010},

date = {2010-01-01},

journal = {Journal of Geophysical Resarch},

volume = {115},

pages = {D18103},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{OrtizdeGalisteo2009,

title = {Error source in AOD retrieval from filter radiometer data in the UV due to filter band function},

author = { J. P. Ortiz de Galisteo and V. E. Cachorro and C. Toledano and E. Rodriguez and A. Berjon and A. M. de Frutos},

doi = {10.1016/j.jaerosci.2009.03.006},

year  = {2009},

date = {2009-01-01},

journal = {Journal of Aerosol Science},

volume = {40},

pages = {597-602},

abstract = {The filter band function of filter radiometers is frequently used in AOD retrieval to improve the accuracy of the Rayleigh and gaseous absorption contributions to the total optical depth. These contributions to the total optical thickness are overestimated when the band-pass filter curve used in the computation exceeds the lower limit of the detector response range (around 320 nm). It can be the case for some typical band-pass filters used in the ultraviolet region (e.g. 340 or 380 nm). This error can involve a strong impact on the aerosol optical depth accuracy, underestimating its value. Errors as large as 0.047 in the evaluation of ozone optical depth at 340 nm, and 0.009 in the Rayleigh optical depth were found, leading to final errors of 50–100% in the AOD for remote locations, like Polar regions or high mountains. To avoid this significant error, the detector spectral response must be taken into account in the computations. Further, it is recommended to discard the filter band-pass function when the transmittance falls below 1% of its maximum value at the central wavelength.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{OrtizdeGalisteo2008,

title = {Analysis of aerosol optical depth evaluation in Polar regions and associated uncertainties},

author = { J. P. Ortiz de Galisteo and C. Toledano and E. Rodriguez and C. V. E. and A. M. de Frutos},

url = {www.adv-sci-res.net/2/5/2008/},

year  = {2008},

date = {2008-01-01},

journal = {Advances in Science and Research},

volume = {2},

pages = {5-8},

abstract = {Some available processing algorithms used to calculate the aerosol optical depth from radiometric measurements were tested. The aim was to evaluate the associated uncertainties in polar regions due to the data processing, in order to adjust the methodology of the calculation and illustrate the importance of these error sources. The measurements were obtained during a sun photometer campaign in Ny-Ålesund within the framework of the POLAR-AOD project.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{,

keywords = {},

pubstate = {published},

tppubtype = {article}

}