Validation and Spatiotemporal Distribution of GEOS-5–Based Planetary Boundary Layer Height and Relative Humidity in China

2018 ◽  
Vol 35 (4) ◽  
pp. 479-492 ◽  
Author(s):  
Yidan Si ◽  
Shenshen Li ◽  
Liangfu Chen ◽  
Chao Yu ◽  
Zifeng Wang ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Relative Humidity ◽  
Planetary Boundary Layer ◽  
Spatiotemporal Distribution ◽  
Planetary Boundary Layer Height ◽  
Layer Height ◽  
Boundary Layer Height

Trends in Planetary Boundary Layer Height over Europe

2013 ◽  
Vol 26 (24) ◽  
pp. 10071-10076 ◽  
Author(s):  
Yehui Zhang ◽  
Dian J. Seidel ◽  
Shaodong Zhang
Keyword(s):  
Boundary Layer ◽  
Relative Humidity ◽  
Surface Temperature ◽  
Planetary Boundary Layer ◽  
Environmental Changes ◽  
Strong Positive Correlation ◽  
Planetary Boundary Layer Height ◽  
Strong Negative Correlation ◽  
Layer Height ◽  
Boundary Layer Height

Abstract Estimates of trends in planetary boundary layer height over Europe are presented, based on daily radiosonde observations at 25 stations during 1973–2010 and using a bulk Richardson number approach to determine heights. Most stations show statistically significant increases in daytime heights in all four seasons, but fewer show statistically significant trends in nighttime heights. Daytime height variations show an expected strong negative correlation with surface relative humidity and strong positive correlation with surface temperature at most stations studied, on both year-to-year and day-to-day time scales. Similar relations hold for long-term trends: increasing daytime boundary layer height is associated with decreasing surface relative humidity and increasing surface temperature at most stations. The extent to which these changes are regionally representative or local reflections of environmental changes near the observing stations is difficult to ascertain.

scholarly journals Observed Diurnal Cycle Climatology of Planetary Boundary Layer Height

2010 ◽  
Vol 23 (21) ◽  
pp. 5790-5809 ◽  
Author(s):  
Shuyan Liu ◽  
Xin-Zhong Liang
Keyword(s):  
Boundary Layer ◽  
Planetary Boundary Layer ◽  
Diurnal Cycle ◽  
Surface Characteristics ◽  
Planetary Boundary Layer Height ◽  
Layer Height ◽  
Boundary Layer Height ◽  
Tropical Oceans ◽  
Critical Model ◽  
Fine Resolution

Abstract An observational climatology of the planetary boundary layer height (PBLH) diurnal cycle, specific to surface characteristics, is derived from 58 286 fine-resolution soundings collected in 14 major field campaigns around the world. An objective algorithm determining PBLH from sounding profiles is first developed and then verified by available lidar and sodar retrievals. The algorithm is robust and produces realistic PBLH as validated by visual examination of several thousand additional soundings. The resulting PBLH from all existing data is then subject to various statistical analyses. It is demonstrated that PBLH occurrence frequencies under stable, neutral, and unstable regimes follow a narrow, intermediate, and wide Gamma distribution, respectively, over both land and oceans. Over ice all exhibit a narrow distribution. The climatological PBLH diurnal cycle is strong over land and oceans, with a distinct peak at 1500 and 1200 LT, whereas the cycle is weak over ice. Relative to midlatitude land, the PBLH variability over tropical oceans is larger during the morning and at night but much smaller in the afternoon. This study provides a unique observational database for critical model evaluation on the PBLH diurnal cycle and its temporal/spatial variability.

Comparison between two algorithms based on different wavelets to obtain the Planetary Boundary Layer height

2014 ◽  
Author(s):  
Gregori de Arruda Moreira ◽  
Fabio J. da Silva Lopes ◽  
Juan L. Guerrero-Rascado ◽  
Maria José Granados-Muñoz ◽  
Riad Bourayou ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Planetary Boundary Layer ◽  
Planetary Boundary Layer Height ◽  
Layer Height ◽  
Boundary Layer Height

A new algorithm for planetary boundary layer height calculation based on multilayer recognition

2021 ◽  
pp. 118919
Author(s):  
Yubing Pan ◽  
Qianqian Wang ◽  
Pengkun Ma ◽  
Xingcan Jia ◽  
Zhiheng Liao ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Planetary Boundary Layer ◽  
Planetary Boundary Layer Height ◽  
Layer Height ◽  
Boundary Layer Height

Optimization Method for Planetary Boundary Layer Height Retrieval by Lidar

2021 ◽  
Vol 41 (7) ◽  
pp. 0728002
Author(s):  
于思琪 Yu Siqi ◽  
刘东 Liu Dong ◽  
徐继伟 Xu Jiwei ◽  
王珍珠 Wang Zhenzhu ◽  
吴德成 Wu Decheng ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Planetary Boundary Layer ◽  
Optimization Method ◽  
Planetary Boundary Layer Height ◽  
Layer Height ◽  
Boundary Layer Height

scholarly journals Set of Algorithms and Techniques for Accurate 3D, Single Beam – Single Pointing, Lidar Measurements for Slant Range Visibility, Planetary Boundary Layer Height and Wind Speed Retrieval, Atmospheric Layers Spatial Distribution and Categorization in Real Time

2020 ◽  
Vol 237 ◽  
pp. 02031
Author(s):  
Alexandros Pantazis ◽  
Alexandros Papayannis
Keyword(s):  
Boundary Layer ◽  
Spatial Distribution ◽  
Wind Speed ◽  
Real Time ◽  
Planetary Boundary Layer ◽  
Planetary Boundary Layer Height ◽  
Layer Height ◽  
Single Beam ◽  
Slant Range ◽  
Boundary Layer Height

In this work, a full set of recently developed algorithms and techniques is presented, for a single beam-single pointing lidar to be able to perform operational and independent accurate 3 Dimensional (3D) measurements, for slant range visibility, wind speed retrieval, atmospheric layers spatial distribution and categorization, as well as Planetary Boundary Layer Height (PBLH) retrieval, in real or Near Real Time (NRT).The idea behind this development was for any single lidar to be able to perform a set of accurately measured products, either mobile or stationary, with or without network connectivity with other sensors for data-information exchange. The products were determined by the needs of lidar remote scientific and commercial community, in order to be even more attractive and valuable to atmospheric scientists, meteorologists, aviation and shipping safety operators, as well as to the Space lidar community.

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