Statistical Characteristics of Cloud Heights over Lanzhou, China from Multiple Years of Micro-Pulse Lidar Observation

The macroscopic characteristics of clouds over Lanzhou, China were investigated using micro-pulse lidar data from September 2005 to November 2011. The results show that the mean of the cloud base height, cloud peak height, cloud top height and cloud thickness during the observation was 4.03 km, 4.81...

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Autores principales:	Xianjie Cao, Gefei Lu, Mengqi Li, Jiayun Wang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cloud height lidar frequency distribution semi-arid climate change Meteorology. Climatology QC851-999
Acceso en línea:	https://doaj.org/article/6a39fb240b1d44a7b1148e6cef2253d6
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id	oai:doaj.org-article:6a39fb240b1d44a7b1148e6cef2253d6
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spelling	oai:doaj.org-article:6a39fb240b1d44a7b1148e6cef2253d62021-11-25T16:44:20ZStatistical Characteristics of Cloud Heights over Lanzhou, China from Multiple Years of Micro-Pulse Lidar Observation10.3390/atmos121114152073-4433https://doaj.org/article/6a39fb240b1d44a7b1148e6cef2253d62021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4433/12/11/1415https://doaj.org/toc/2073-4433The macroscopic characteristics of clouds over Lanzhou, China were investigated using micro-pulse lidar data from September 2005 to November 2011. The results show that the mean of the cloud base height, cloud peak height, cloud top height and cloud thickness during the observation was 4.03 km, 4.81 km, 5.50 km and 1.47 km, respectively; the maximum frequency of the cloud base height, cloud peak height, cloud top height and cloud thickness was 25.7% in the range of 1–2 km, 16.2% in the range of 2–3 km, 14.6% in the range of 2–3 km and 42.2% in the range of 1–2 km, respectively; the maximum frequency of cloud base height was 24.2%, 24.6%, 29.7% and 21.4% in spring, summer, autumn and winter, respectively, all in the range of 1–2 km, and middle clouds occurred most frequently at 41.4%, followed by low clouds (33.7%) and high clouds (24.9%) during the observation period; the maximum frequency of cloud peak height was 15.8% in the range of 3–4 km, 18% in the range of 4–5 km, 20% in the range of 2–3 km in autumn and 18.6% in the range of 5–6 km in winter; the maximum frequency of cloud top height was 14% in the range of 3–4 km in spring, 16% in the range of 4–5 km in summer, 20.1% in the range of 2–3 km in autumn and 17.8% in the range of 7–8 km in winter; the maximum frequency of cloud thickness was 44.9%, 35.6% and 52% in the range of 1–2 km in spring, summer and winter, respectively, while it was 44.9% in the range of 0–1 km in autumn; the cloud thickness was mostly less than 3 km; generally, the thicker of cloud, the less the frequency.Xianjie CaoGefei LuMengqi LiJiayun WangMDPI AGarticlecloud heightlidarfrequency distributionsemi-aridclimate changeMeteorology. ClimatologyQC851-999ENAtmosphere, Vol 12, Iss 1415, p 1415 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cloud height lidar frequency distribution semi-arid climate change Meteorology. Climatology QC851-999
spellingShingle	cloud height lidar frequency distribution semi-arid climate change Meteorology. Climatology QC851-999 Xianjie Cao Gefei Lu Mengqi Li Jiayun Wang Statistical Characteristics of Cloud Heights over Lanzhou, China from Multiple Years of Micro-Pulse Lidar Observation
description	The macroscopic characteristics of clouds over Lanzhou, China were investigated using micro-pulse lidar data from September 2005 to November 2011. The results show that the mean of the cloud base height, cloud peak height, cloud top height and cloud thickness during the observation was 4.03 km, 4.81 km, 5.50 km and 1.47 km, respectively; the maximum frequency of the cloud base height, cloud peak height, cloud top height and cloud thickness was 25.7% in the range of 1–2 km, 16.2% in the range of 2–3 km, 14.6% in the range of 2–3 km and 42.2% in the range of 1–2 km, respectively; the maximum frequency of cloud base height was 24.2%, 24.6%, 29.7% and 21.4% in spring, summer, autumn and winter, respectively, all in the range of 1–2 km, and middle clouds occurred most frequently at 41.4%, followed by low clouds (33.7%) and high clouds (24.9%) during the observation period; the maximum frequency of cloud peak height was 15.8% in the range of 3–4 km, 18% in the range of 4–5 km, 20% in the range of 2–3 km in autumn and 18.6% in the range of 5–6 km in winter; the maximum frequency of cloud top height was 14% in the range of 3–4 km in spring, 16% in the range of 4–5 km in summer, 20.1% in the range of 2–3 km in autumn and 17.8% in the range of 7–8 km in winter; the maximum frequency of cloud thickness was 44.9%, 35.6% and 52% in the range of 1–2 km in spring, summer and winter, respectively, while it was 44.9% in the range of 0–1 km in autumn; the cloud thickness was mostly less than 3 km; generally, the thicker of cloud, the less the frequency.
format	article
author	Xianjie Cao Gefei Lu Mengqi Li Jiayun Wang
author_facet	Xianjie Cao Gefei Lu Mengqi Li Jiayun Wang
author_sort	Xianjie Cao
title	Statistical Characteristics of Cloud Heights over Lanzhou, China from Multiple Years of Micro-Pulse Lidar Observation
title_short	Statistical Characteristics of Cloud Heights over Lanzhou, China from Multiple Years of Micro-Pulse Lidar Observation
title_full	Statistical Characteristics of Cloud Heights over Lanzhou, China from Multiple Years of Micro-Pulse Lidar Observation
title_fullStr	Statistical Characteristics of Cloud Heights over Lanzhou, China from Multiple Years of Micro-Pulse Lidar Observation
title_full_unstemmed	Statistical Characteristics of Cloud Heights over Lanzhou, China from Multiple Years of Micro-Pulse Lidar Observation
title_sort	statistical characteristics of cloud heights over lanzhou, china from multiple years of micro-pulse lidar observation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6a39fb240b1d44a7b1148e6cef2253d6
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Statistical Characteristics of Cloud Heights over Lanzhou, China from Multiple Years of Micro-Pulse Lidar Observation

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