Brewer AOD Calibration and Retrieval in the UV-B

Comunicación presentada en: EUBREWNET Training School and Brewer Ozone Spectrophotometer Open Congress junto con el 14th Biennial WMO-GAW Brewer Users Group Meeting celebrado del 24 al 28 de marzo de 2014 en Santa Cruz de Tenerife

Eighth Intercomparison Campaign of the Regional Brewer Calibration Center Europe (RBCC-E): El Arenosillo Atmospheric Sounding Station, Huelva, Spain, 10-20 June 2013

The eighth Regional Brewer Calibration Center for Europe (RBCC-E) intercomparison was held at El Arenosillo Atmospheric Sounding Station of the Instituto Nacional de Técnica Aeroespacial (INTA) during the period 10-20 June 2013. This campaign was organized in collaboration with the Area of Instrumentation and Atmospheric Research of INTA, with the support of the Global Atmosphere Watch (GAW) programme of the World Meteorological Organization (WMO) and a CEOS CALVAL project of the European Space Agency (ESA)

Ninth Intercomparison Campaign of the Regional Brewer Calibration Center Europe (RBCC-E): Lichtklimatisches Observatorium, Arosa, Switzerland, 14-26 July 2014

This ninth intercomparison campaign was a joint exercise of the Regional Brewer Calibration Center for Europe (RBCC-E) and the Arosa Lichtklimatisches Observatorium (LKO) of MeteoSwiss during the period 14-26 July 2014. Six Brewers managed by 11 experts from four countries participated in the campaign (Table 1). The Brewer instruments were compared with the RBCC-E travelling reference Brewer #185 for ozone

Characteristics of the subtropical tropopause region based on long-term highly resolved sonde records over Tenerife

This study examines the structure of the subtropical tropopause region over Tenerife (the Canary Islands, Spain; 28°N, 16°W) based on a 20 year (1992–2011) ozonesonde data and European Center for Medium-Range Weather Forecasts ERA-Interim potential vorticity (PV) and zonal wind speed reanalysis. High-resolution vertical profiles allowed a detailed description of the subtropical tropopause break and the associated subtropical jet stream (STJ), where models fail to properly simulate the upper troposphere–lower stratosphere (UTLS). The subtropical UTLS is revealed as a complex atmospheric region with a thickness ∼8 km, which is examined through the analysis and evaluation of four different tropopause definitions: thermal (TT), cold point, ozone (OT), and dynamical (DT) tropopauses. A novel method to determine the DT based on the vertical gradient of Lait's modified PV is presented and the concept of a second DT has been introduced for the first time. Monthly climatologies of tropopause height and potential temperature are calculated for double and single tropopause events. The 14.3 km height level is used to differentiate between tropical and extratropical UTLS regimes, intimately linked to the position of the STJ. There is fairly good consistency between all the defined tropopauses under the double tropopause scheme, except in spring, when the OT is observed at lower levels due to frequent baroclinic instabilities in the upper troposphere. As concerns to single tropopause events, the same pattern is found from April to June, reflecting the influence of analogous processes during these months. In winter, altitude differences between OT, DT, and TT resulted from poleward STJ excursions forced by blocking systems over the North Atlantic. Analysis of the tropopause inversion layer showed distinctive features for tropical and midlatitude tropopauses

Caracterización de la alta troposfera-baja estratosfera (UTLS) subtropical: tropopausa y distribución vertical de ozono

En los últimos años se ha prestado un gran interés a la región atmosférica en torno a la tropopausa. En gran parte, este resurgimiento de los estudios sobre la tropopausa ha sido motivado por el reconocimiento del importante papel que la tropopausa desempeña en un buen número de tópicos. Así, por ejemplo, aparece estrechamente relacionada con cambios en el ozono estratosférico, parece ser un buen indicador del cambio climático y aparece como un elemento activo en el intercambio de varias especies químicas entre la estratosfera y la troposfera. Este estudio busca adquirir un conocimiento preciso de la estructura espacial y temporal de la tropopausa con el fin de mejorar nuestra comprensión sobre una serie de fenómenos relacionados con el clima y la química atmosférica global

Psychological elements explaining the consumer's adoption and use of a website recommendation system: A theoretical framework proposal

The purpose of this paper is to understand, with an emphasis on the psychological perspective of the research problem, the consumer's adoption and use of a certain web site recommendation system as well as the main psychological outcomes involved. The approach takes the form of theoretical modelling. Findings: A conceptual model is proposed and discussed. A total of 20 research propositions are theoretically analyzed and justified. Research limitations/implications: The theoretical discussion developed here is not empirically validated. This represents an opportunity for future research. Practical implications: The ideas extracted from the discussion of the conceptual model should be a help for recommendation systems designers and web site managers, so that they may be more aware, when working with such systems, of the psychological process consumers undergo when interacting with them. In this regard, numerous practical reflections and suggestions are presented

Dispersion test results with multiple geometries at RBCC-E campaign AROSA 2014

Presentación realizada para el MC and WG meeting celebrado en Delft (Países Bajos) del 11 al 12 de noviembre de 201

Caracterización de la tropopausa subtropical utilizando una serie larga de ozonosondeos sobre Tenerife

Ponencia presentada en: XXXIII Jornadas Científicas de la AME y el XIV Encuentro Hispano Luso de Meteorología celebrado en Oviedo, del 7 al 9 de abril de 2014