A5015576751- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Calibration and Measurement Techniques
- Impact of Light on Environment and Health
- Atmospheric and Environmental Gas Dynamics
- Air Quality Monitoring and Forecasting
- Solar Radiation and Photovoltaics
- Spacecraft and Cryogenic Technologies
- Planetary Science and Exploration
- Infrared Target Detection Methodologies
- Urban Heat Island Mitigation
- Air Quality and Health Impacts
- Business, Education, Mathematics Research
- Accounting and Financial Management
- Astronomical Observations and Instrumentation
- Geophysics and Gravity Measurements
- Satellite Image Processing and Photogrammetry
- Remote Sensing in Agriculture
- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Cyclone Separators and Fluid Dynamics
- Spaceflight effects on biology
- Vehicle emissions and performance
- Adaptive optics and wavefront sensing
Universidad de Valladolid
2015-2025
Instituto Geológico
2017
Maestro (Sweden)
2017
University of Central Florida
2012
Secretariat of Housing and Urban Development
1992
Abstract. The aim of this paper is to analyze the suitability high-mountain stations Mauna Loa and Izaña for Langley plot calibration Sun photometers. Thus aerosol optical depth (AOD) characteristics seasonality, as well cloudiness, have been investigated in order provide a robust estimation uncertainty number days that are suitable calibrations. data used investigations belong AERONET GAW-PFR networks, which maintain reference photometers at these with long measurement records: 22 years 15...
Abstract. This paper explores the potential of all-sky cameras to retrieve aerosol properties with GRASP code (Generalized Retrieval Atmosphere and Surface Properties). To this end, normalized sky radiances (NSRs) extracted from an camera at three effective wavelengths (467, 536 605 nm) are used in study. NSR observations a set relative (uncalibrated) arbitrary units. have been simulated for different loads types forward radiative transfer module GRASP, indicating that contain information...
The first multi-instrument nocturnal aerosol optical depth (AOD) intercomparison campaign was held at the high-mountain Izaña Observatory (Tenerife, Spain) in June 2017, involving 2-min synchronous measurements from two different types of lunar photometers (Cimel CE318-T and Moon Precision Filter Radiometer, LunarPFR) one stellar photometer. Robotic Lunar (ROLO) model developed by U.S. Geological Survey (USGS) compared with open-access ROLO Implementation for photometry Observation (RIMO)...
Three volcanic plumes were detected during the Tajogaite volcano eruptive activity (Canary Islands, Spain, September–December 2021) over Iberian Peninsula. The spatiotemporal evolution of these events is characterised by combining passive satellite remote sensing and ground-based lidar sun-photometer systems. inversion algorithm GRASP used with a suite instruments such as lidar/ceilometer from eight sites at different locations throughout Satellite observations showed that ash remained...
Abstract. Arid regions are a major source of mineral dust aerosol. Transport from these sources can have great impact on aerosol climatology in distant regions. In order to assess the climate we must understand how properties change after long distance transport sources. This study addresses changes columnar when outbreaks western Africa arrive over eastern Caribbean across Atlantic Ocean, transit 5–7 days. We use data NASA Aerosol Robotic Network (AERONET) located at five and two sites...
Abstract. The emergence of Moon photometers is allowing measurements lunar irradiance over the world and increasing potential to derive aerosol optical depth (AOD) at night-time, which very important in polar areas. Actually, new implement latest technological advances that permit lunar-irradiance together with classical Sun photometry measurements. However, a proper use these instruments for AOD retrieval requires accurate time-dependent knowledge extraterrestrial time due its fast change...
Australian smoke from the extraordinary biomass burning in December 2019 was observed over Marambio, Antarctica 7th to 10th January, 2020. The plume transported thousands of kilometers Pacific Ocean, and reached Antarctic Peninsula at a hight 13 km, as determined by satellite lidar observations. proposed origin trajectory aerosol are supported back-trajectory model analyses. Ground-based Sun–Sky–Moon photometer belonging Aerosol Robotic Network (AERONET) measured optical depth (500 nm...
Abstract. The University of Valladolid (UVa, Spain) has managed a calibration center the AErosol RObotic NETwork (AERONET) since 2006. CÆLIS software tool, developed by UVa, was created to manage data generated AERONET photometers for calibration, quality control and processing purposes. This paper exploits potential this tool in order obtain products like aerosol optical depth (AOD) Ångström exponent (AE), which are high interest atmospheric climate studies, as well enhance instruments...
Abstract Cuban and Spanish scientists have been studying the properties of atmospheric aerosols in Camagüey, Cuba for more than 15 years, achieving notable scientific results at local, regional, global levels. Using instruments expertise supplied by Spain, characterized local aerosol optical microphysical properties, their chemical composition absorbing properties. Aerosol depth (AOD) Ångström exponent observations were used to validate MODIS satellite broadband AOD from pyrheliometers. Sun...
Abstract. The lack of aerosol optical depth (AOD) data at night can be partially addressed through moon photometer measurements or fully covered with star observations. However, the limited availability and complexity photometers has motivated this study to use all-sky cameras extract starlight signals derive AOD using photometry. For purpose, eight were configured deployed in nine different locations capture raw images varying exposure times every 2 minutes during night. This work proposes...
Abstract Atmospheric water vapor, a greenhouse gas, is increasing in the Arctic. It scientific challenge to understand causes for this increase and determine adaptation mitigation actions confront its climatic effects. During last decades, spatial temporal coverage of vapor satellite observations increased notably, reanalysis estimates have steadily improved. However, scarce Arctic integrated (IWV) surface‐based limits representativeness estimate validations. Recently, we validated sun...
Abstract. The Earth's oceans play a critical role in regulating the global climate and atmospheric processes, with marine aerosols significantly influencing weather patterns, air quality, dynamics. Despite extensive land-based aerosol monitoring through networks like AERONET (AErosol RObotic NETwork), characterization remains gap, due part to logistical challenges of conducting measurements remote oceanic environments. To address this, robust, automated, precise systems adapted for research...
Abstract. The Saharan Aerosol Long-Range Transport and Aerosol–Cloud-Interaction Experiment (SALTRACE) was devoted to the investigation of dust properties over Caribbean. campaign took place in June–July 2013. A wide set ground-based airborne aerosol instrumentation deployed at island Barbados for a comprehensive experiment. Several sun photometers performed measurements during this campaign: two AERONET (Aerosol Robotic Network) Cimel Sun Sky Automatic Radiometer (SSARA). were co-located...
Abstract. Sensitivity studies indicate that among the diverse error sources of ground-based sky radiometer observations, pointing plays an important role in correct retrieval aerosol properties. The accurate is specially critical for characterization desert dust aerosol. present work relies on analysis two new measurement procedures (cross and matrix) specifically designed evaluation standard instrument Aerosol Robotic Network (AERONET), Cimel CE-318 Sun photometer. first part contains a...
Abstract. This work is a first approach to correct the systematic errors observed in aerosol optical depth (AOD) retrieved at nighttime using lunar photometry and calibration techniques dependent on irradiance model. To this end, nocturnal AOD measurements were performed 2014 CE318-T master Sun–sky–lunar photometer (lunar Langley calibrated) Izaña high mountain observatory. information has been restricted 59 nights characterized as clean stable according lidar vertical profiles. A phase...
Abstract. Given the importance of atmospheric aerosol, number instruments and measurement networks which focus on its characterization are growing. Many challenges derived from standardization protocols, monitoring instrument status to evaluate network data quality manipulation distribution large volume (raw processed). CÆLIS is a software system aims at simplifying management network, providing tools by instruments, processing in real time offering scientific community new tool work with...
Abstract. All-sky cameras are frequently used to detect cloud cover; however, this work explores the use of these instruments for more complex purpose extracting relative sky radiances. An all-sky camera (SONA202-NF model) with three colour filters narrower than usual kind is configured capture raw images at seven exposure times. A detailed characterization black level, readout noise, hot pixels and linear response carried out. methodology proposed obtain a high dynamic range (HDR) image its...
Abstract. This work introduces CAECENET, a new system capable of automatically retrieving columnar and vertically-resolved aerosol properties running the GRASP (Generalized Retrieval Atmosphere Surface Properties) algorithm using sun-sky photometer (aerosol optical depth, AOD; sky radiance measurements) ceilometer (range corrected signal; RCS) data as input. method, so called GRASPpac, is implemented in which assimilates photometers from CÆLIS database ICENET (Iberian Ceilometer Network)....
Abstract. Absolute calibration of Earth observation (EO) sensors is key to ensuring long-term stability and interoperability, it essential for global climate records forecasts. The Moon provides a photometrically stable source within the range Earth's radiometric levels free from atmospheric interference. However, use this ideal source, one must model variation in its disc-integrated irradiance resulting changes Sun–Earth–Moon geometries. Lunar Irradiance Model European Space Agency (LIME)...