Excessive exposure to solar ultraviolet (UV) radiation has damaging effects on life Earth. High-energy short-wavelength B (UVB) is biologically effective, influencing a range of dermal processes, including the potentially beneficial production vitamin D. In addition UVB, longer wavelength and more abundant A (UVA) been shown be linked an increased risk skin cancer. To evaluate this requires mon...

The 2015 fire season and related smoke pollution in Indonesia was more severe than the major 2006 episode, making it the most severe season observed by the NASA Earth Observing System satellites that go back to the early 2000s, namely active fire detections from the Terra and Aqua Moderate Resolution Imaging Spectroradiometers (MODIS), MODIS aerosol optical depth, Terra Measurement of Pollution...

The Global Ozone Monitoring Experiment (GOME) on board ERS-2 (launched in April 1995) is the successful predecessor of a series of new generation sensors (SCIAMACHY, OMI, GOME-2) aiming at the needed global measurement of key ozone-related species to assess current and future changes of the atmosphere [1-3]. Providing the global picture of atmospheric ozone (O 3), GOME is also the first orbitin...

This study evaluates formaldehyde (HCHO) over the U.S. from 2006 to 2015 by comparing ground monitor data Air Quality System (AQS) and a satellite retrieval Ozone Monitoring Instrument (OMI). Our comparison focuses on utility of inform patterns, trends, processes ground-based HCHO across We find that cities with higher levels biogenic volatile organic compound (BVOC) emissions, including primar...

This paper presents the investigation results of UV measurement at different level of altitudes and the development of a new portable instrument for measuring UV. The rapid growth of industrial sectors in developing countries including Malaysia, brings not only income to the nation, but also causes pollution in various forms. Air pollution is one of the significant contributors to global warmin...

Overview This document provides a brief description of the OMTO3 data product. OMTO3 comprises total ozone, aerosol index, and ancillary information produced from the TOMS Version 8.5 (V8.5) algorithm applied to OMI " global mode " measurements. In the global mode each file contains a single orbit of data. In each orbit OMI measurements cover approximately 2600 km wide cross-track swath from po...

Ozone is an important atmospheric gas due to its role in air quality and radiative forcing. A new method for sensitive, rapid monitoring of ambient ozone has been developed using a compact platform and relatively inexpensive components. Based on incoherent broadband cavity enhanced absorption spectroscopy (IBB-CEAS), the device utilizes an optical cavity of just 14.5 cm and 99.3 % reflective mi...

The detection of multiple cloud layers using satellite observations is important for retrieval algorithms as well as climate applications. In this paper, we describe a relatively simple algorithm to detect multiple cloud layers and distinguish them from vertically-extended clouds. The algorithm can be applied to coincident passive sensors that derive both cloud-top pressure from the thermal inf...

We present an approach to reduce topographyrelated errors of vertical tropospheric columns (VTC) of NO2 retrieved from the Ozone Monitoring Instrument (OMI) in the vicinity of mountainous terrain. This is crucial for reliable estimates of air pollution levels over our particular area of interest, the Alpine region and the adjacent planes, where the Dutch OMI NO2 product (DOMINO) exhibits signif...