TY - GEN
T1 - Exceptional events monitoring using S-NPP VIIRS aerosol products
AU - Kondragunta, Shobha
AU - Laszlo, Istvan
AU - Ciren, Pubu
AU - Zhang, Hai
AU - Liu, Hongqing
AU - Huang, Jingfeng
AU - Huff, Amy
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/12/1
Y1 - 2017/12/1
N2 - The Suomi National Polar-orbiting Partnership (SNPP) Vis ible Infrared Imaging Radiometer (VIIRS) instrument was launched on October 28, 2011 to provide operational environmental monitoring which includes exceptional events such as dust storms, smoke, urban haze, and volcanic ash. The VIIRS aerosol products include pixel-level (∼750m) aerosol optical thickness (AOT) and aerosol detection which includes dust and smoke mask/aerosol index. The VIIRS aerosol product resolutions and its large swath width (∼3000 km) provide an unprecedented capability to observe small-to-large scale exceptional events that impact human health and economy. The VIIRS aerosol products have a demonstrated accuracy, precision, and measurement range to reliably observe and track exceptional events and aid operational air quality forecasters in providing warnings and alerts to the public. This presentation will illustrate VIIRS aerosol product capabilities and limitations using examples of exceptional events such as a multi-day smog blanketing China (November-December 2015), long range transport of smoke from forest fires in Alaska and Canada impacting regional air quality in the northeast United States (June 2015), and long range transport of dust from Africa impacting air quality in the south eastern United States (June 2015). While the aerosol imagery is very valuable to forecasters in providing the regional extent of an exceptional event (e.g., upwind conditions and their impact downwind), drawing quantitative estimates of surface concentrations of particles smaller than 2.5 μm in diameter (PM2.5, μg/m3) from AOT often times requires additional information or assumptions. The Chinese smog case where the observed VIIRS AOT values did not necessarily reflect the high surface PM2.5 values (∼600 μg/m3) observed by ground stations and the identification of aerosol type in the smog as smoke due to the presence of highly absorbing brown carbon will be used as an example to demonstrate the strengths and limitations of applying remotely sensed aerosol products to air quality monitoring and forecasting.
AB - The Suomi National Polar-orbiting Partnership (SNPP) Vis ible Infrared Imaging Radiometer (VIIRS) instrument was launched on October 28, 2011 to provide operational environmental monitoring which includes exceptional events such as dust storms, smoke, urban haze, and volcanic ash. The VIIRS aerosol products include pixel-level (∼750m) aerosol optical thickness (AOT) and aerosol detection which includes dust and smoke mask/aerosol index. The VIIRS aerosol product resolutions and its large swath width (∼3000 km) provide an unprecedented capability to observe small-to-large scale exceptional events that impact human health and economy. The VIIRS aerosol products have a demonstrated accuracy, precision, and measurement range to reliably observe and track exceptional events and aid operational air quality forecasters in providing warnings and alerts to the public. This presentation will illustrate VIIRS aerosol product capabilities and limitations using examples of exceptional events such as a multi-day smog blanketing China (November-December 2015), long range transport of smoke from forest fires in Alaska and Canada impacting regional air quality in the northeast United States (June 2015), and long range transport of dust from Africa impacting air quality in the south eastern United States (June 2015). While the aerosol imagery is very valuable to forecasters in providing the regional extent of an exceptional event (e.g., upwind conditions and their impact downwind), drawing quantitative estimates of surface concentrations of particles smaller than 2.5 μm in diameter (PM2.5, μg/m3) from AOT often times requires additional information or assumptions. The Chinese smog case where the observed VIIRS AOT values did not necessarily reflect the high surface PM2.5 values (∼600 μg/m3) observed by ground stations and the identification of aerosol type in the smog as smoke due to the presence of highly absorbing brown carbon will be used as an example to demonstrate the strengths and limitations of applying remotely sensed aerosol products to air quality monitoring and forecasting.
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U2 - 10.1109/IGARSS.2017.8127196
DO - 10.1109/IGARSS.2017.8127196
M3 - Conference contribution
AN - SCOPUS:85041852913
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 1285
EP - 1287
BT - 2017 IEEE International Geoscience and Remote Sensing Symposium
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 37th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017
Y2 - 23 July 2017 through 28 July 2017
ER -
