Evaluation of Arctic Water Vapor Profile Observations from a Differential Absorption Lidar
The continuous measuring of the vertical profile of water vapor in the boundary layer using a commercially available differential absorption lidar (DIAL) has only recently been made possible. Since September 2018, a new pre-production version of the Vaisala DIAL system has operated at the Iqaluit su...
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ftdoajarticles:oai:doaj.org/article:5604a539770349168c7eb685094ad9d9 2024-01-07T09:41:23+01:00 Evaluation of Arctic Water Vapor Profile Observations from a Differential Absorption Lidar Zen Mariani Shannon Hicks-Jalali Kevin Strawbridge Jack Gwozdecky Robert W. Crawford Barbara Casati François Lemay Raisa Lehtinen Pekko Tuominen 2021-02-01T00:00:00Z https://doi.org/10.3390/rs13040551 https://doaj.org/article/5604a539770349168c7eb685094ad9d9 EN eng MDPI AG https://www.mdpi.com/2072-4292/13/4/551 https://doaj.org/toc/2072-4292 doi:10.3390/rs13040551 2072-4292 https://doaj.org/article/5604a539770349168c7eb685094ad9d9 Remote Sensing, Vol 13, Iss 4, p 551 (2021) DIAL Raman lidar water vapor humidity remote sensing Science Q article 2021 ftdoajarticles https://doi.org/10.3390/rs13040551 2023-12-10T01:48:11Z The continuous measuring of the vertical profile of water vapor in the boundary layer using a commercially available differential absorption lidar (DIAL) has only recently been made possible. Since September 2018, a new pre-production version of the Vaisala DIAL system has operated at the Iqaluit supersite (63.74°N, 68.51°W), commissioned by Environment and Climate Change Canada (ECCC) as part of the Canadian Arctic Weather Science project. This study presents its evaluation during the extremely dry conditions experienced in the Arctic by comparing it with coincident radiosonde and Raman lidar observations. Comparisons over a one year period were strongly correlated (r > 0.8 at almost all heights) and exhibited an average bias of +0.13 ± 0.01 g/kg (DIAL-sonde) and +0.18 ± 0.02 g/kg (DIAL-Raman). Larger differences exhibiting distinct artifacts were found between 250 and 400 m above ground level (AGL). The DIAL’s observations were also used to conduct a verification case study of operational numerical weather prediction (NWP) models during the World Meteorological Organization’s Year of Polar Prediction. Comparisons to ECCC’s global environmental multiscale model (GEM-2.5 km and GEM-10 km) indicate good agreement with an average bias < 0.16 g/kg for the higher-resolution (GEM-2.5 km) models. All models performed significantly better during the winter than the summer, likely due to the winter’s lower water vapor concentrations and decreased variability. This study provides evidence in favor of using high temporal resolution lidar water vapor profile measurements to complement radiosonde observations and for NWP model verification and process studies. Article in Journal/Newspaper Arctic Climate change Iqaluit Directory of Open Access Journals: DOAJ Articles Arctic Canada Remote Sensing 13 4 551 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
DIAL Raman lidar water vapor humidity remote sensing Science Q |
spellingShingle |
DIAL Raman lidar water vapor humidity remote sensing Science Q Zen Mariani Shannon Hicks-Jalali Kevin Strawbridge Jack Gwozdecky Robert W. Crawford Barbara Casati François Lemay Raisa Lehtinen Pekko Tuominen Evaluation of Arctic Water Vapor Profile Observations from a Differential Absorption Lidar |
topic_facet |
DIAL Raman lidar water vapor humidity remote sensing Science Q |
description |
The continuous measuring of the vertical profile of water vapor in the boundary layer using a commercially available differential absorption lidar (DIAL) has only recently been made possible. Since September 2018, a new pre-production version of the Vaisala DIAL system has operated at the Iqaluit supersite (63.74°N, 68.51°W), commissioned by Environment and Climate Change Canada (ECCC) as part of the Canadian Arctic Weather Science project. This study presents its evaluation during the extremely dry conditions experienced in the Arctic by comparing it with coincident radiosonde and Raman lidar observations. Comparisons over a one year period were strongly correlated (r > 0.8 at almost all heights) and exhibited an average bias of +0.13 ± 0.01 g/kg (DIAL-sonde) and +0.18 ± 0.02 g/kg (DIAL-Raman). Larger differences exhibiting distinct artifacts were found between 250 and 400 m above ground level (AGL). The DIAL’s observations were also used to conduct a verification case study of operational numerical weather prediction (NWP) models during the World Meteorological Organization’s Year of Polar Prediction. Comparisons to ECCC’s global environmental multiscale model (GEM-2.5 km and GEM-10 km) indicate good agreement with an average bias < 0.16 g/kg for the higher-resolution (GEM-2.5 km) models. All models performed significantly better during the winter than the summer, likely due to the winter’s lower water vapor concentrations and decreased variability. This study provides evidence in favor of using high temporal resolution lidar water vapor profile measurements to complement radiosonde observations and for NWP model verification and process studies. |
format |
Article in Journal/Newspaper |
author |
Zen Mariani Shannon Hicks-Jalali Kevin Strawbridge Jack Gwozdecky Robert W. Crawford Barbara Casati François Lemay Raisa Lehtinen Pekko Tuominen |
author_facet |
Zen Mariani Shannon Hicks-Jalali Kevin Strawbridge Jack Gwozdecky Robert W. Crawford Barbara Casati François Lemay Raisa Lehtinen Pekko Tuominen |
author_sort |
Zen Mariani |
title |
Evaluation of Arctic Water Vapor Profile Observations from a Differential Absorption Lidar |
title_short |
Evaluation of Arctic Water Vapor Profile Observations from a Differential Absorption Lidar |
title_full |
Evaluation of Arctic Water Vapor Profile Observations from a Differential Absorption Lidar |
title_fullStr |
Evaluation of Arctic Water Vapor Profile Observations from a Differential Absorption Lidar |
title_full_unstemmed |
Evaluation of Arctic Water Vapor Profile Observations from a Differential Absorption Lidar |
title_sort |
evaluation of arctic water vapor profile observations from a differential absorption lidar |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/rs13040551 https://doaj.org/article/5604a539770349168c7eb685094ad9d9 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Climate change Iqaluit |
genre_facet |
Arctic Climate change Iqaluit |
op_source |
Remote Sensing, Vol 13, Iss 4, p 551 (2021) |
op_relation |
https://www.mdpi.com/2072-4292/13/4/551 https://doaj.org/toc/2072-4292 doi:10.3390/rs13040551 2072-4292 https://doaj.org/article/5604a539770349168c7eb685094ad9d9 |
op_doi |
https://doi.org/10.3390/rs13040551 |
container_title |
Remote Sensing |
container_volume |
13 |
container_issue |
4 |
container_start_page |
551 |
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1787422187812028416 |