Temperature and Humidity Measurements

2020 ◽  
pp. 31-43
Author(s):  
Markus S. Wahl ◽  
Harald I. Muri ◽  
Rolf K. Snilsberg ◽  
Jacob J. Lamb ◽  
Dag R. Hjelme
Keyword(s):  
Temperature And Humidity ◽  
Humidity Measurements

scholarly journals Climatological and statistical characteristics of the Haines Index for North America

2007 ◽  
Vol 16 (2) ◽  
pp. 139 ◽  
Author(s):  
Julie A. Winkler ◽  
Brian E. Potter ◽  
Dwight F. Wilhelm ◽  
Ryan P. Shadbolt ◽  
Krerk Piromsopa ◽  
...  
Keyword(s):  
North America ◽  
Spatial Variability ◽  
Atmospheric Pressure ◽  
Statistical Characteristics ◽  
Potential Contribution ◽  
Extensive Analysis ◽  
Temperature And Humidity ◽  
Humidity Measurements ◽  
Operational Tool

The Haines Index is an operational tool for evaluating the potential contribution of dry, unstable air to the development of large or erratic plume-dominated wildfires. The index has three variants related to surface elevation, and is calculated from temperature and humidity measurements at atmospheric pressure levels. To effectively use the Haines Index, fire forecasters and managers must be aware of the climatological and statistical characteristics of the index for their location. However, a detailed, long-term, and spatially extensive analysis of the index does not currently exist. To meet this need, a 40-year (1961–2000) climatology of the Haines Index was developed for North America. The climatology is based on gridded (2.5° latitude × 2.5° longitude) temperature and humidity fields from the NCEP/NCAR reanalysis. The climatology illustrates the large spatial variability in the Haines Index both within and between regions using the different index variants. These spatial variations point to the limitations of the index and must be taken into account when using the Haines Index operationally.

Differences in the microenvironment of a polycarbonate caging system: bedding vs raised wire floors

1983 ◽  
Vol 17 (2) ◽  
pp. 85-89 ◽  
Author(s):  
T. H. Raynor ◽  
W. H. Steinhagen ◽  
T. E. Hamm
Keyword(s):  
Bedding Material ◽  
Temperature And Humidity ◽  
Humidity Measurements

The microenvironment of polycarbonate cages housing rats with and without various types of bedding was compared with that of cages that utilized wire floor inserts with different bedding types. Parameters monitored were temperature, humidity, ammonia concentrations and particulates. No differences were noted in the various caging types in relation to temperature and humidity measurements. Significant differences in ammonia concentrations existed in some of the cages when bedding material was used. The use of raised floorwalk inserts also demonstrated significant differences in particulate counts to cages without inserts. The data obtained demonstrated that contact bedding was useful in controlling ammonia generation and that a raised floorwalk insert reduced significantly the aerosolization of bedding particles that could be ingested or inhaled by the rats.

Effects of Temperature and Humidity on the Sound Absorption of Automotive Sound Absorbing Materials

2008 ◽  
Author(s):  
Edward R. Green ◽  
Andrea L. Zent
Keyword(s):  
Automotive Industry ◽  
Sound Absorption ◽  
Temperature Changes ◽  
Highly Sensitive ◽  
Target Values ◽  
Temperature And Humidity ◽  
Humidity Measurements ◽  
Effects Of Temperature ◽  
Materials Used ◽  
Absorption Measurements

Normally, small differences in day-to-day and laboratory-to-laboratory sound absorption measurements do not have large consequences because most noise control applications are not highly sensitive to small changes in sound absorption. However, in the automotive industry, materials are not purchased unless they meet strict sound absorption targets. As a result, decisions worth millions of U.S. dollars are made based on acoustic measurements. As material sound absorption moves closer to target values, the consequences of small measurement variations, such as those which might be caused by changes in ambient temperature and humidity during the course of a test, become more critical. The purpose of the work presented in this paper is to investigate which materials used for vehicle sound absorption are sensitive to temperature and humidity. Measurements are made using an impedance tube. It is discovered that typical materials used as absorbers in automotive applications are not sensitive to small temperature changes, and only a few materials are sensitive to changes in humidity.

The Radiation of the Atmosphere on the Bases of Temperature and Humidity Measurements at Lindenberg

1920 ◽  
Vol 2 ◽  
pp. 91
Author(s):  
Anders Ångström ◽  
H. Hergesell ◽  
Anders Angstrom
Keyword(s):  
Temperature And Humidity ◽  
Humidity Measurements

An Empirical Study on Time Lag Phenomenon Regarding Summertime Indoor Thermal Environments in the Domestic Buildings of Different Construction Types in Hot-Humid Climate Zone

2014 ◽  
Vol 911 ◽  
pp. 504-508 ◽  
Author(s):  
Hung Ren Hsieh ◽  
Wun Yuan Chen ◽  
Hsin Yu
Keyword(s):  
Natural Ventilation ◽  
Thermal Environment ◽  
Time Lag ◽  
Humid Climate ◽  
Indoor Temperature ◽  
Thermal Environments ◽  
Temperature And Humidity ◽  
Humidity Measurements ◽  
Detached House ◽  
Heavy Construction

In the empirical case studies of the seven detached house buildings situated in Yilan, Taiwan in a hot and humid climate, this research conducted the actual measurements and analysis of the Summertime Indoor and Outdoor thermal environment parameters in order to accomplish the research of Time Lag Phenomenon of Summertime Indoor Temperature and Humidity in the Buildings of Light (Composite) Constructions and Heavy (Reinforced Concrete) Constructions. Firstly, it indicated that given the condition of doors and windows in closed positions, there would be Time Lag Phenomenon for both of the indoor Temperature and Humidity measurements in domestic buildings. The Temperature Time Lag for Heavy Construction Buildings had a duration of around three hours, almost as twice that of the figure for Light Construction Buildings. There was a significant correlation between Quantity of Interior Finishes and Humidity Time Lag inside domestic buildings, whereas the bigger the Quantity of Interior Finishes, the longer the Humidity Time Lag. Secondly, it also showed that given the condition of doors and windows in opened positions, there was almost zero Time Lag for both of the domestic indoor Temperature and Humidity measurements. Last but not least, generally speaking, the Ratio of Indoor/Outdoor Diurnal Temperature Range of Light Construction Buildings were higher than that of Heavy Construction Buildings. In particular, given the condition of doors and windows in opened positions with natural ventilation in summertime, it was slightly cooler inside the Light Construction Domestic Buildings than the Heavy Construction Domestic Buildings.

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