Tropopause Characteristics Based on Long-Term ARM Radiosonde Data: A Fine-Scale Comparison at the Extratropical SGP Site and Arctic NSA Site

The variations in the characteristics of the tropopause are sensitive indicators for the climate system and climate change. By using Atmospheric Radiation Measurement (ARM) radiosonde data that were recorded at the extratropical Southern Great Plains (SGP) and Arctic North Slope of Alaska (NSA) site...

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Published in:Atmosphere
Main Author: Zhang, Jinqiang
Language:unknown
Published: 2023
Subjects:
Online Access:http://www.osti.gov/servlets/purl/1875420
https://www.osti.gov/biblio/1875420
https://doi.org/10.3390/atmos13060965
id ftosti:oai:osti.gov:1875420
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spelling ftosti:oai:osti.gov:1875420 2023-07-30T04:01:37+02:00 Tropopause Characteristics Based on Long-Term ARM Radiosonde Data: A Fine-Scale Comparison at the Extratropical SGP Site and Arctic NSA Site Zhang, Jinqiang 2023-06-05 application/pdf http://www.osti.gov/servlets/purl/1875420 https://www.osti.gov/biblio/1875420 https://doi.org/10.3390/atmos13060965 unknown http://www.osti.gov/servlets/purl/1875420 https://www.osti.gov/biblio/1875420 https://doi.org/10.3390/atmos13060965 doi:10.3390/atmos13060965 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.3390/atmos13060965 2023-07-11T10:13:22Z The variations in the characteristics of the tropopause are sensitive indicators for the climate system and climate change. By using Atmospheric Radiation Measurement (ARM) radiosonde data that were recorded at the extratropical Southern Great Plains (SGP) and Arctic North Slope of Alaska (NSA) sites over an 18-year period (January 2003 to December 2020), this study performs a fine-scale comparison of the climatological tropopause features between these two sites that are characterized by different climates. The static stability increases rapidly above the tropopause at both sites, indicating the widespread existence of a tropopause inversion layer. The structures of both the tropopause inversion layer and the stability transition layer are more obvious at NSA than at SGP, and the seasonal variation trends of the tropopause inversion layer and stability transition layer are distinctly different between the two sites. A fitting method was used to derive the fitted tropopause height and tropopause sharpness (λ). Although this fitting method may determine a secondary tropopause rather than the primary tropopause when multiple tropopause heights are identified on one radiosonde profile, the fitted tropopause heights generally agree well with the observed tropopause heights. Broad tropopause sharpness values (λ > 2 km) occur more frequently at SGP than at NSA, resulting in a greater average tropopause sharpness at SGP (1.0 km) than at NSA (0.6 km). Significant positive trends are exhibited by the tropopause heights over the two sites, with rates of increase of 23.7 ± 6.5 m yr ⁻1 at SGP and 28.0 ± 4.0 m yr ⁻1 at NSA during the study period. Other/Unknown Material Arctic Climate change north slope Alaska SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic Atmosphere 13 6 965
institution Open Polar
collection SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
op_collection_id ftosti
language unknown
topic 54 ENVIRONMENTAL SCIENCES
spellingShingle 54 ENVIRONMENTAL SCIENCES
Zhang, Jinqiang
Tropopause Characteristics Based on Long-Term ARM Radiosonde Data: A Fine-Scale Comparison at the Extratropical SGP Site and Arctic NSA Site
topic_facet 54 ENVIRONMENTAL SCIENCES
description The variations in the characteristics of the tropopause are sensitive indicators for the climate system and climate change. By using Atmospheric Radiation Measurement (ARM) radiosonde data that were recorded at the extratropical Southern Great Plains (SGP) and Arctic North Slope of Alaska (NSA) sites over an 18-year period (January 2003 to December 2020), this study performs a fine-scale comparison of the climatological tropopause features between these two sites that are characterized by different climates. The static stability increases rapidly above the tropopause at both sites, indicating the widespread existence of a tropopause inversion layer. The structures of both the tropopause inversion layer and the stability transition layer are more obvious at NSA than at SGP, and the seasonal variation trends of the tropopause inversion layer and stability transition layer are distinctly different between the two sites. A fitting method was used to derive the fitted tropopause height and tropopause sharpness (λ). Although this fitting method may determine a secondary tropopause rather than the primary tropopause when multiple tropopause heights are identified on one radiosonde profile, the fitted tropopause heights generally agree well with the observed tropopause heights. Broad tropopause sharpness values (λ > 2 km) occur more frequently at SGP than at NSA, resulting in a greater average tropopause sharpness at SGP (1.0 km) than at NSA (0.6 km). Significant positive trends are exhibited by the tropopause heights over the two sites, with rates of increase of 23.7 ± 6.5 m yr ⁻1 at SGP and 28.0 ± 4.0 m yr ⁻1 at NSA during the study period.
author Zhang, Jinqiang
author_facet Zhang, Jinqiang
author_sort Zhang, Jinqiang
title Tropopause Characteristics Based on Long-Term ARM Radiosonde Data: A Fine-Scale Comparison at the Extratropical SGP Site and Arctic NSA Site
title_short Tropopause Characteristics Based on Long-Term ARM Radiosonde Data: A Fine-Scale Comparison at the Extratropical SGP Site and Arctic NSA Site
title_full Tropopause Characteristics Based on Long-Term ARM Radiosonde Data: A Fine-Scale Comparison at the Extratropical SGP Site and Arctic NSA Site
title_fullStr Tropopause Characteristics Based on Long-Term ARM Radiosonde Data: A Fine-Scale Comparison at the Extratropical SGP Site and Arctic NSA Site
title_full_unstemmed Tropopause Characteristics Based on Long-Term ARM Radiosonde Data: A Fine-Scale Comparison at the Extratropical SGP Site and Arctic NSA Site
title_sort tropopause characteristics based on long-term arm radiosonde data: a fine-scale comparison at the extratropical sgp site and arctic nsa site
publishDate 2023
url http://www.osti.gov/servlets/purl/1875420
https://www.osti.gov/biblio/1875420
https://doi.org/10.3390/atmos13060965
geographic Arctic
geographic_facet Arctic
genre Arctic
Climate change
north slope
Alaska
genre_facet Arctic
Climate change
north slope
Alaska
op_relation http://www.osti.gov/servlets/purl/1875420
https://www.osti.gov/biblio/1875420
https://doi.org/10.3390/atmos13060965
doi:10.3390/atmos13060965
op_doi https://doi.org/10.3390/atmos13060965
container_title Atmosphere
container_volume 13
container_issue 6
container_start_page 965
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