{"id":108483,"date":"2026-04-01T15:13:48","date_gmt":"2026-04-01T13:13:48","guid":{"rendered":"https:\/\/34.38.16.0\/uv-a-e-uv-b-sensori-broadband-per-applicazioni-meteo\/"},"modified":"2026-04-01T15:22:43","modified_gmt":"2026-04-01T13:22:43","slug":"uv-a-and-uv-b-broadband-sensors-for-meteorological-applications","status":"publish","type":"post","link":"https:\/\/lsi-lastem.com\/es\/uv-a-and-uv-b-broadband-sensors-for-meteorological-applications\/","title":{"rendered":"UV-A and UV-B sensors: broadband radiometers for evaluating the UV Index"},"content":{"rendered":"\t\t
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Measuring UV-A and UV-B: Key Data for the Environment, Health, and Climate<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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UV-A and UV-B sensors<\/b><\/a> are advanced devices in the field of solar radiation monitoring. These broadband radiometers are designed to <\/span>measure atmospheric irradiance<\/b> in the UV-A and UV-B spectrum, according to <\/span>WMO standard n.8<\/span><\/a> chap.7.<\/span><\/p>

In this technical pill dive, we explore the distinctive features of these broadband radiometers and their impact in meteorological applications.<\/span> First, however, it is essential to understand the crucial role these measures play in the current <\/span>climate change landscape<\/b> and how these dynamics <\/span>affect <\/b>the <\/span>environment <\/b>and <\/span>people<\/b>.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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UV-A, UV-B, and Climate Change<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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In the debate on climate change, attention often focuses on temperature, extreme weather events, and air quality, while ultraviolet radiation takes a back seat. Yet monitoring UV-A and UV-B is essential to understanding how <\/span>environmental conditions<\/b> affecting ground-level exposure are <\/span>changing<\/b>: it is not only the intensity of solar radiation that matters, but also the role of stratospheric ozone, cloud cover, atmospheric aerosols, altitude, and surface reflectance. In this context, measuring UV-A and UV-B separately provides concrete data to observe a complex and time-varying phenomenon with direct impacts on human health, ecosystems, and outdoor activities. For this reason, today more than ever, UV monitoring is not a secondary parameter but an essential tool for understanding the effects of climate change in a more comprehensive and informed manner.<\/span><\/p>

One point worth noting is that <\/span>climate change<\/b> can <\/span>influence <\/b>UV-A and UV-B levels in an indirect yet significant way by affecting the atmospheric and surface factors that regulate their transmission to the ground. Variations in cloud cover, for example, can attenuate or, under certain conditions, locally amplify incident radiation; similarly, changes in the concentration of aerosols, dust, and particulate matter alter the scattering and <\/span>absorption of ultraviolet radiation<\/b> in the atmosphere. Another crucial factor is the state of stratospheric ozone, which acts as a filter, particularly against UV-B, making this wavelength band especially sensitive to its variations. Climate-related changes in land surfaces, such as the reduction of snow cover or ice and thus of ground reflectance, can also alter the total amount of UV received locally. For this reason, in the current climate context, monitoring UV-A and UV-B means observing not only the radiation itself, but also the combined effects of the atmosphere, weather, and changes in the Earth\u2019s surface.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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UV Monitoring for Climate Studies<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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For climate studies, the <\/span>monitoring of UV-A and UV-B<\/b> radiation is of particular scientific interest because it provides <\/span>observational data<\/b> on the interactions between solar radiation, atmospheric composition, and the radiative properties of the Earth\u2019s surface. Ultraviolet radiation at the surface is in fact modulated by variables such as columnar ozone content, cloud cover, aerosol load, and surface albedo, all factors that directly or indirectly influence the radiative processes of the climate system. The availability of <\/span>continuous, traceable<\/b>, and metrologically reliable <\/span>time series<\/b> therefore allows for the analysis of <\/span>UV radiation variability <\/b>on <\/span>seasonal <\/b>and <\/span>interannual scales<\/b>, the identification of anomalies associated with specific atmospheric conditions, and the provision of datasets useful for the validation of radiative and atmospheric models. In this sense, the measurement of UV-A and UV-B is not only a descriptive parameter of ground-level exposure but also a significant observational tool for studying the processes linking atmospheric dynamics, chemical composition, and climate change.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Public Health Effects and Prevention<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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From a public health perspective, monitoring <\/span>UV-A and UV-B radiation<\/b> is particularly important because these two components of ultraviolet radiation have <\/span>direct <\/b>and <\/span>cumulative effects<\/b> on the <\/span>human body<\/b>. Excessive exposure to UV rays is associated with acute skin damage, such as erythema, and more serious chronic effects, including premature skin aging, skin cancers, eye damage such as cataracts, and alterations to the immune system. UV-B rays are primarily responsible for erythematous reactions and a significant portion of the most immediate biological damage, while UV-A rays, which constitute the majority of UV radiation reaching the ground, contribute significantly to photoaging and cumulative damage over time. <\/span>Monitoring both parameters<\/b> therefore provides concrete and useful information not only for environmental research but also for <\/span>prevention<\/b>, risk communication, and the <\/span>protection <\/b>of <\/span>people<\/b>, particularly the most vulnerable individuals and those who work or engage in outdoor activities.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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High-Precision Measurement Solutions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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To address these environmental and health challenges, it is necessary to rely on instrumentation that guarantees not only ruggedness but also superior metrological accuracy. The ability to translate complex atmospheric phenomena into reliable datasets depends directly on the design choices of the <\/span>radiometer<\/b>. Precisely to <\/span>meet <\/b>these <\/span>requirements for excellence<\/b>, LSI LASTEM sensors are designed to operate in the most demanding outdoor conditions.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Sensitive element and cosine response\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The sensing element of these sensors is a\u00a0photodiode\u00a0<\/b>with optical filter and interferential deposition, which not only improves\u00a0spectral transmission<\/b>, but is also designed to ensure\u00a0optimal cosine response<\/b>. The addition of a high-quality glass dome and a Teflon diffuser further contributes to improving the precision of the irradiance measurement, especially at low angles of incidence.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Wide spectral response for outdoor measurements\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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One of the distinctive features of LSI LASTEM UV-A and UV-B sensors is their\u00a0broadband spectral response<\/b>. Thanks to this feature, they are able to cover the entire UV-A and UV-B spectrum, making them ideal for\u00a0outdoor measurements<\/b>, where the main source of radiation is the sun. This distinguishes them from other sensors on the market, which are often optimized to detect radiation from artificial sources in indoor environments.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Technical characteristics of UV-A and UV-B radiometers<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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