<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0187-6236</journal-id>
<journal-title><![CDATA[Atmósfera]]></journal-title>
<abbrev-journal-title><![CDATA[Atmósfera]]></abbrev-journal-title>
<issn>0187-6236</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias de la Atmósfera y Cambio Climático]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-62362023000200317</article-id>
<article-id pub-id-type="doi">10.20937/atm.53032</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Remote sensing of atmospheric nitrogen dioxide in an urban area in central northern Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-de-Torres]]></surname>
<given-names><![CDATA[Julio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ávila-Montoya]]></surname>
<given-names><![CDATA[Clara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lastras-Martínez]]></surname>
<given-names><![CDATA[Luis Felipe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lastras-Martínez]]></surname>
<given-names><![CDATA[Alfonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores-Jiménez]]></surname>
<given-names><![CDATA[David Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cárdenas]]></surname>
<given-names><![CDATA[Abraham]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Algara-Siller]]></surname>
<given-names><![CDATA[Marcos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Instituto de Investigación en Comunicación Óptica ]]></institution>
<addr-line><![CDATA[San Luis Potosí San Luis Potosí]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Baja California Instituto de Ingeniería ]]></institution>
<addr-line><![CDATA[Mexicali Baja California]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Facultad de Ingeniería Centro de Investigación y Estudios de Posgrado]]></institution>
<addr-line><![CDATA[San Luis Potosí San Luis Potosí]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>36</volume>
<numero>2</numero>
<fpage>317</fpage>
<lpage>327</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-62362023000200317&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-62362023000200317&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-62362023000200317&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Nitrogen dioxide (NO2) was measured in the urban area of San Luis Potosí (Mexico) using a remote sensing technique based on differential optical absorption spectroscopy (DOAS) in zenith-sky configuration. Measurements were taken from July to August 2015. In this technique, scattered sunlight in the atmosphere is collected by a telescope and carried onto a linear array-based spectrometer at ground level. During the measurement period, the maximum NO2 levels (2.3 × 1016 molecules cm-2) were found at around 11:00 LT, whereas NO2 levels fell on days with wind speeds lower than 1.5 m s-1. NO2 levels were compared and explained with the behavior of meteorological data such as wind speed, relative humidity, and surface temperature obtained from the Weather Research and Forecasting (WRF) model.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Se midió la concentración atmosférica de dióxido de nitrógeno (NO2) en el área urbana de San Luis Potosí (México) mediante la técnica de espectroscopia de absorción óptica diferencial (DOAS, por su sigla en inglés), utilizando una configuración cenital. Las mediciones se realizaron de julio a agosto de 2015. En esta técnica, se recolecta la luz solar dispersa en la atmósfera por medio de un telescopio y se hace incidir sobre un espectrómetro que cuenta con un arreglo lineal de detectores a nivel del suelo. Durante el periodo de medición, los niveles máximos de NO2 (2.3 × 1016 moleculas cm-2) se encontraron alrededor de las 11:00 LT, mientras que los niveles de NO2 cayeron en los días con velocidades de viento inferiores a 1.5 m s-1. Los niveles de NO2 se compararon con el comportamiento de los datos meteorológicos como velocidad del viento, humedad relativa y temperatura superficial obtenidos del modelo de pronóstico de investigación meteorológica (WRF).]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[optical absorption]]></kwd>
<kwd lng="en"><![CDATA[spectroscopy]]></kwd>
<kwd lng="en"><![CDATA[atmospheric gases.]]></kwd>
</kwd-group>
</article-meta>
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