7 research outputs found
Wind-sensitive Interpolation of Urban Air Pollution Forecasts
AbstractPeople living in urban areas are exposed to outdoor air pollution. Air contamination is linked to numerous premature and pre-native deaths each year. Urban air pollution is estimated to cost approximately 2% of GDP in developed countries and 5% in developing countries. Some works reckon that vehicle emissions produce over 90% of air pollution in cities in these countries. This paper presents some results in predicting and interpolating real-time urban air pollution forecasts for the city of Valencia in Spain. Although many cities provide air quality data, in many cases, this information is presented with significant delays (three hours for the city of Valencia) and it is limited to the area where the measurement stations are located. We compare several regression models able to predict the levels of four different pollutants (NO, NO2, SO2, O3) in six different locations of the city. Wind strength and direction is a key feature in the propagation of pollutants around the city, in this sense we study different techniques to incorporate this factor in the regression models. Finally, we also analyse how to interpolate forecasts all around the city. Here, we propose an interpolation method that takes wind direction into account. We compare this proposal with respect to well-known interpolation methods. By using these contamination estimates, we are able to generate a real-time pollution map of the city of Valencia
Predicci贸n e interpolaci贸n din谩mica de los niveles de contaminaci贸n atmosf茅rica mediante datos de intensidad de tr谩fico y direcci贸n del viento
[ES] En este trabajo se presenta un m茅todo para predecir e interpolar los niveles de contaminaci贸n
atmosf茅rica en la ciudad de Valencia. En primer lugar, se comparan diferentes
modelos de regresi贸n, siendo capaces de predecir el nivel de cuatro contaminantes (NO,
NO2, O3, SO2) en las seis estaciones de medici贸n de contaminaci贸n de la ciudad de Valencia.
La fuerza y direcci贸n del viento son factores clave en la propagaci贸n de los contaminantes,
generados en gran medida por las emisiones producidas por los veh铆culos que
circulan por las ciudades. Por esta raz贸n, se estudian diferentes t茅cnicas para incorporar
estos factores en los modelos de predicci贸n. En segundo lugar, se analiza como extrapolar
las predicciones a toda la ciudad. Con este prop贸sito, se propone un nuevo m茅todo de
interpolaci贸n que tiene en cuenta la direcci贸n del viento a la hora de calcular el resultado.
Los experimentos con validaci贸n cruzada muestran que este m茅todo mejora los resultados
en comparaci贸n con otros m茅todos conocidos. Finalmente, se utilizan estos m茅todos
para extrapolar los resultados a toda la ciudad y generar mapas de la contaminaci贸n
atmosf茅rica en Valencia.[CA] En este treball es presenta un m猫tode per a predir i interpolar els nivells de contaminaci贸
atmosf猫rica en la ciutat de Val猫ncia. En primer lloc, es comparen diferents models
de regressi贸, sent capa莽os de predir el nivell de quatre contaminants (NO, NO2, O3, SO2)
en les sis estacions de mesurament de contaminaci贸 de la ciutat de Val猫ncia. La for莽a i
direcci贸 del vent s贸n factors clau en la propagaci贸 dels contaminants, generats en gran
manera per les emissions produ茂des pels vehicles que circulen per les ciutats. Per esta
ra贸, s鈥檈studien diferents t猫cniques per a incorporar estos factors en els models de predicci贸.
En segon lloc, s鈥檃nalitza com extrapolar les prediccions a tota la ciutat. Amb este
prop貌sit, es proposa un nou m猫tode d鈥檌nterpolaci贸 que t茅 en compte la direcci贸 del vent
a l鈥檋ora de calcular el resultat. Els experiments amb validaci贸 encreuada mostren que
este m猫tode millora els resultats en comparaci贸 amb altres m猫todes coneguts. Finalment,
s鈥檜tilitzen estos m猫todes per a extrapolar els resultats a tota la ciutat i generar mapes de
la contaminaci贸 atmosf猫rica a Val猫ncia.[EN] This work presents a method for predict and interpolate the levels of urban air pollution
for the city of Valencia. First, we compare several regression models able to predict
the levels of four different pollutants (NO, NO2, O3, SO2) in the six pollution measurement
stations of the city of Valencia. Wind Strength and Wind Direction are key features
in the propagation of pollutants, generated mostly by vehicles circulating in the city. We
study different techniques to incorporate these factors in the regression models. In second
place, we analyse how to interpolate forecasts all around the city. Here, we propose
a new interpolation method that takes wind direction into account. We compare this proposal
with respect to well-known interpolation methods. By using these contamination
estimates, we are able to generate pollution maps of the city of Valencia.Contreras Ochando, L. (2016). Predicci贸n e interpolaci贸n din谩mica de los niveles de contaminaci贸n atmosf茅rica mediante datos de intensidad de tr谩fico y direcci贸n del viento. http://hdl.handle.net/10251/71607.TFG
Dise帽o de una aplicaci贸n de monitoreo de emanaci贸n de gases en la ciudad mediante el uso de tecnolog铆as de inteligencia artificial
El presente trabajo de investigaci贸n realiza una revisi贸n de referencias bibliogr谩ficas relacionadas a sistemas de monitoreo y modelos de pron贸stico de contaminaci贸n atmosf茅rica basados en t茅cnicas de inteligencia artificial. La revisi贸n consta principalmente de art铆culos de investigaci贸n cient铆fica obtenidos de bases de datos revistas indexadas, donde se exponen sus principales hallazgos, as铆 como se presentan puntos de encuentro y desencuentro entre los diferentes autores. Finalmente, se presentan las conclusiones obtenidas a partir de la s铆ntesis de la informaci贸n revisada.Trabajo de investigaci贸nCampus Lima Centr
Air Quality Prediction in Smart Cities Using Machine Learning Technologies Based on Sensor Data: A Review
The influence of machine learning technologies is rapidly increasing and penetrating almost in every field, and air pollution prediction is not being excluded from those fields. This paper covers the revision of the studies related to air pollution prediction using machine learning algorithms based on sensor data in the context of smart cities. Using the most popular databases and executing the corresponding filtration, the most relevant papers were selected. After thorough reviewing those papers, the main features were extracted, which served as a base to link and compare them to each other. As a result, we can conclude that: (1) instead of using simple machine learning techniques, currently, the authors apply advanced and sophisticated techniques, (2) China was the leading country in terms of a case study, (3) Particulate matter with diameter equal to 2.5 micrometers was the main prediction target, (4) in 41% of the publications the authors carried out the prediction for the next day, (5) 66% of the studies used data had an hourly rate, (6) 49% of the papers used open data and since 2016 it had a tendency to increase, and (7) for efficient air quality prediction it is important to consider the external factors such as weather conditions, spatial characteristics, and temporal features
On the Deployment of Wireless Sensor Networks for Air Quality Mapping: Optimization Models and Algorithms
International audienc
Small and Medium Smart Cities. Congress
Alcoy se convirti贸 en epicentro de las 'Smart City' espa帽olas durante los
d铆as 14 y 15 de febrero. M谩s de 200 asistentes acudieron al Small & Medium
Smart Cities Congress organizado por el Ayuntamiento de Alcoy y el
Campus de Alcoy de la UPV, bajo el amparo de las c谩tedras 'Alcoy Ciudad el
Conocimiento' y 'Smart City Alcoy', suscritas entre ambas instituciones.(2018). Small and Medium Smart Cities. Congress. http://hdl.handle.net/10251/10467