Transport of Water Vapor from Tropical Cyclones to the Upper Troposphere

This paper investigates the influence of tropical cyclones on water vapor concentrations in the upper atmosphere above these storms. We use independent data sets of tropical storm intensity, water vapor and lightning activity to investigate this relationship. Water vapor in the upper troposphere is...

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Autores principales: Tair Plotnik, Colin Price, Joydeb Saha, Anirban Guha
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Lenguaje:EN
Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:9fad7d4ffb5f4814af48114dcebbbdbe2021-11-25T16:45:40ZTransport of Water Vapor from Tropical Cyclones to the Upper Troposphere10.3390/atmos121115062073-4433https://doaj.org/article/9fad7d4ffb5f4814af48114dcebbbdbe2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4433/12/11/1506https://doaj.org/toc/2073-4433This paper investigates the influence of tropical cyclones on water vapor concentrations in the upper atmosphere above these storms. We use independent data sets of tropical storm intensity, water vapor and lightning activity to investigate this relationship. Water vapor in the upper troposphere is a key greenhouse gas, with direct impacts on surface temperatures. Both the amount and altitude of water vapor impact the radiative balance and the greenhouse effect of the atmosphere. The water vapor enters the upper troposphere through deep convective storms, often associated with lightning activity. The intensity of the lightning activity represents the intensity of the convection in these storms, and hence the amount of water vapor transported aloft. In this paper, we investigate the role of tropical cyclones on the contribution of water vapor to the upper atmosphere moistening. Tropical cyclones are the largest most intense storms on Earth and can last for up to two weeks at a time. There is also evidence that the intensity of tropical cyclones is increasing, and will continue to increase, due to global warming. In this study we find that the maximum moistening of the upper atmosphere occurs at the 200 hPa level (~12 km altitude), with a lag of 1–2 days after the maximum sustained winds in the tropical cyclone. While the water vapor peaks after the maximum of the storm intensity, the lightning activity peaks before the maximum intensity of the storms, as shown previously. We show here that the absolute amount of water vapor in the upper troposphere above tropical storms increases linearly with the intensity of the storms. For every 10 hPa decrease in the minimum pressure of tropical storms, the specific humidity increases around 0.2 g/kg at the 200 hPa level.Tair PlotnikColin PriceJoydeb SahaAnirban GuhaMDPI AGarticletropical cyclonesupper tropospheric water vaporlightningMeteorology. ClimatologyQC851-999ENAtmosphere, Vol 12, Iss 1506, p 1506 (2021)
institution DOAJ
collection DOAJ
language EN
topic tropical cyclones
upper tropospheric water vapor
lightning
Meteorology. Climatology
QC851-999
spellingShingle tropical cyclones
upper tropospheric water vapor
lightning
Meteorology. Climatology
QC851-999
Tair Plotnik
Colin Price
Joydeb Saha
Anirban Guha
Transport of Water Vapor from Tropical Cyclones to the Upper Troposphere
description This paper investigates the influence of tropical cyclones on water vapor concentrations in the upper atmosphere above these storms. We use independent data sets of tropical storm intensity, water vapor and lightning activity to investigate this relationship. Water vapor in the upper troposphere is a key greenhouse gas, with direct impacts on surface temperatures. Both the amount and altitude of water vapor impact the radiative balance and the greenhouse effect of the atmosphere. The water vapor enters the upper troposphere through deep convective storms, often associated with lightning activity. The intensity of the lightning activity represents the intensity of the convection in these storms, and hence the amount of water vapor transported aloft. In this paper, we investigate the role of tropical cyclones on the contribution of water vapor to the upper atmosphere moistening. Tropical cyclones are the largest most intense storms on Earth and can last for up to two weeks at a time. There is also evidence that the intensity of tropical cyclones is increasing, and will continue to increase, due to global warming. In this study we find that the maximum moistening of the upper atmosphere occurs at the 200 hPa level (~12 km altitude), with a lag of 1–2 days after the maximum sustained winds in the tropical cyclone. While the water vapor peaks after the maximum of the storm intensity, the lightning activity peaks before the maximum intensity of the storms, as shown previously. We show here that the absolute amount of water vapor in the upper troposphere above tropical storms increases linearly with the intensity of the storms. For every 10 hPa decrease in the minimum pressure of tropical storms, the specific humidity increases around 0.2 g/kg at the 200 hPa level.
format article
author Tair Plotnik
Colin Price
Joydeb Saha
Anirban Guha
author_facet Tair Plotnik
Colin Price
Joydeb Saha
Anirban Guha
author_sort Tair Plotnik
title Transport of Water Vapor from Tropical Cyclones to the Upper Troposphere
title_short Transport of Water Vapor from Tropical Cyclones to the Upper Troposphere
title_full Transport of Water Vapor from Tropical Cyclones to the Upper Troposphere
title_fullStr Transport of Water Vapor from Tropical Cyclones to the Upper Troposphere
title_full_unstemmed Transport of Water Vapor from Tropical Cyclones to the Upper Troposphere
title_sort transport of water vapor from tropical cyclones to the upper troposphere
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/9fad7d4ffb5f4814af48114dcebbbdbe
work_keys_str_mv AT tairplotnik transportofwatervaporfromtropicalcyclonestotheuppertroposphere
AT colinprice transportofwatervaporfromtropicalcyclonestotheuppertroposphere
AT joydebsaha transportofwatervaporfromtropicalcyclonestotheuppertroposphere
AT anirbanguha transportofwatervaporfromtropicalcyclonestotheuppertroposphere
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