TITLE

Effects of urban river width on the temperature and humidity of nearby green belts in summer

AUTHOR(S)
JI Peng; ZHU Chun-yang; LI Shu-hua
PUB. DATE
March 2012
SOURCE
Yingyong Shengtai Xuebao;Mar2012, Vol. 23 Issue 3, p679
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
As an important part of urban ecosystem, urban river plays a vital role in improving urban ecological environment. By the methods of small scale quantitative measurement, this paper analyzed the effects of seven urban rivers with different widths along the Third to Fifth Ring in Beijing on the air temperature and relative humidity of nearby green belts. The results showed that urban river width was the main factor affecting the temperature and humidity of nearby green belts. When the river had a width of 8 m, it had no effects in decreasing temperature but definite effects in increasing humidity; when the river width was 14-33 m, obvious effects were observed in decreasing temperature and increasing humidity; when the river had a width larger than 40 m, the effects in decreasing temperature and increasing humidity were significant and tended to be stable. There existed significant differences in the temperature and humidity between the green belts near the seven rivers and the corresponding controls. The critical width of urban river for the obvious effects in decreasing temperature and increasing humidity was 44 m. The regression equation of the temperature (x) and humidity (y) for the seven green belts nearby the urban rivers in summer was y =173. 191 -3. 247x, with the relative humidity increased by 1. 0% when the air temperature decreased by about 0.3°C.
ACCESSION #
76115126

 

Related Articles

  • Analysis of Relative Humidity Sensors at the WMO Radiosonde Intercomparison Experiment in Brazil. Sapucci, Luiz F.; Machado, Luiz A. T.; da Silveira, Reinaldo B.; Fisch, Gilberto; Monico, João F. G. // Journal of Atmospheric & Oceanic Technology;Jun2005, Vol. 22 Issue 6, p664 

    The quality of the vertical distribution measurements of humidity in the atmosphere is very important in meteorology due to the crucial role that water vapor plays in the earth’s energy budget. The radiosonde is the humidity measurement device that provides the best vertical resolution....

  • Humidity Conditions Of Enclosing Structure With Silicate Brick Veneer And Variable Air Gap. Petrichenko, Mikhail; Nemova, Darya; Bogomolova, Arina; Kopylova, Anastasiya // Applied Mechanics & Materials;2014, Vol. 740, p71 

    The main function of walling system is to protect from environmental impact and to create favorable climate indoors. At the present time people use such tape of structures, such as: wall with silicate brick veneer, curtain wall system with a thin plaster layer and curtain wall system with air...

  • Evaluation of ECMWF water vapour analyses by airborne differential absorption lidar measurements: a case study between Brasil and Europe. Flentje, H.; Dörnbrack, A.; Fix, A.; Ehret, G.; Hölm, E. // Atmospheric Chemistry & Physics Discussions;2007, Vol. 7 Issue 2, p4405 

    Airborne Differential Absorption Lidar (DIAL) observations of tropospheric water vapour over Brazil and between Brazil and south Europe in March 2004 are compared to 1-hourly short-range forecasts of the European Centre for Medium Range Weather Forecasts (ECMWF). On three along-flight sections...

  • Examination of diurnal temperature range at coterminous U.S. stations during Sept. 8-17, 2001. Wijngaarden, W. // Theoretical & Applied Climatology;Jun2012, Vol. 109 Issue 1/2, p1 

    The tragic events of Sept. 11, 2001 resulted in suspension of commercial flights over North America. It has been suggested that the diurnal temperature range (DTR) increased due to an absence of airplane contrails. This study examined hourly data observed at 288 stations. The average DTR,...

  • Observed and Simulated Upper-Tropospheric Water Vapor Feedback. Gettelman, A.; Fu, Q. // Journal of Climate;Jul2008, Vol. 21 Issue 13, p3282 

    Satellite measurements from the Atmospheric Infrared Sounder (AIRS) in the upper troposphere over 4.5 yr are used to assess the covariation of upper-tropospheric humidity and temperature with surface temperatures, which can be used to constrain the upper-tropospheric moistening due to the water...

  • Orographic Flow Response to Variations in Upstream Humidity. Reeves, Heather Dawn; Rotunno, Richard // Journal of the Atmospheric Sciences;Nov2008, Vol. 65 Issue 11, p3557 

    The effects of upstream relative humidity (RH) on low-level wind and precipitation patterns for low-speed, statically stable flows over a mountain are investigated using idealized two- and three-dimensional numerical-simulation experiments in which RH is increased from 0% to 100%. For RH less...

  • Seasonal variations in the isotopic composition of near-surface water vapour in the eastern Mediterranean. ANGERT, ALON; JUNG-EUN LEE; YAKIR, DAN // Tellus: Series B;Sep2008, Vol. 60 Issue 4, p674 

    Although the isotopic composition of precipitation is widely used in global climate change studies, use of water vapour isotopes is considerably more limited. Here we present the results from 9 yr of atmospheric vapour measurements in the Eastern Mediterranean, at a site in Israel. The...

  • Intercalibrating Microwave Satellite Observations for Monitoring Long-Term Variations in Upper- and Midtropospheric Water Vapor*. Chung, Eui-Seok; Soden, Brian J.; John, Viju O. // Journal of Atmospheric & Oceanic Technology;Oct2013, Vol. 30 Issue 10, p2303 

    This paper analyzes the growing archive of 183-GHz water vapor absorption band measurements from the Advanced Microwave Sounding Unit B (AMSU-B) and Microwave Humidity Sounder (MHS) on board polar-orbiting satellites and document adjustments necessary to use the data for long-term climate...

  • Ultrahigh humidity sensitivity of graphene oxide. Hengchang Bi; Kuibo Yin; Xiao Xie; Jing Ji; Shu Wan; Litao Sun; Mauricio Terrones; Dresselhaus, Mildred S. // Scientific Reports;9/20/2013, p1 

    Humidity sensors have been extensively used in various fields, and numerous problems are encountered when using humidity sensors, including low sensitivity, long response and recovery times, and narrow humidity detection ranges. Using graphene oxide (G-O) films as humidity sensing materials, we...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics