The difference in temperature and humidity in different-positioned leaves ofLilium regale

2013 ◽  
Author(s):  
Zisong Yang ◽  
Qiumei Quan
Keyword(s):  
Temperature And Humidity ◽  
The Difference

The Effect of a Difference in Temperature and Humidity on certain Reactions of Female Aëdes aegypti (L.)

1952 ◽  
Vol 43 (1) ◽  
pp. 221-229 ◽  
Author(s):  
Alec H. Parker
Keyword(s):  
Relative Humidity ◽  
Aedes Aegypti ◽  
Room Temperature ◽  
Climatic Conditions ◽  
Effect Of Temperature ◽  
Full Description ◽  
Temperature And Humidity ◽  
Conditioning Effect ◽  
The Difference ◽  
C 50

Sir Rickard Christophers (1947) working at 25°C. and a relative humidity of 80–90 per cent. found female Aëdes aegypti to be attracted by a warm dry surface at 40°C., and to be unaffected by a moist surface at room temperature. The writer (1948), working at 28°C. and 50–70 per cent. R.H. (usually near 50 per cent.) found the opposite: a warm dry surface at temperatures from 36°C. to 40°C. had no effect, while a moist surface at room temperature exerted a quite definite attraction. The purpose of the present experiments was to test the hypothesis that the difference between the results obtained in these two investigations was due to the difference in the ambient temperature and humidity.Repetition of the relevant experiments at 25°C, 85–90 per cent. R.H., and 28°C, 50–55 per cent. R.H., gave results indicating that temperature and humidity difference operating at the time of the experiment could account for part but not all of the discrepancy. There are indications that the remainder may have been a result of the conditioning effect of temperature and humidity differences operating on the insect prior to the experiment.The results emphasise the need for a full description of the climatic conditions under which behaviour work of the type discussed is performed.

scholarly journals In-situ air temperature and humidity measurements over diverse landcovers in Greenbelt, MD Nov. 2013–Nov. 2015

2016 ◽  
Author(s):  
Mark L. Carroll ◽  
Molly E. Brown ◽  
Margaret R. Wooten ◽  
Joel E. Donham ◽  
Alfred B. Hubbard ◽  
...  
Keyword(s):  
Urban Areas ◽  
Climate Adaptation ◽  
National Laboratory ◽  
Mitigation Strategies ◽  
Building Roof ◽  
Oak Ridge ◽  
Average Value ◽  
Temperature And Humidity ◽  
The Difference ◽  
Major Surface

Abstract. As our climate changes through time there is an ever increasing need to quantify how and where it is changing so that mitigation strategies can be implemented. Urban areas have a disproportionate amount of warming due, in part, to the conductive properties of concrete and asphalt surfaces that make up an urban environment. The NASA Climate Adaptation Science Investigation working group at Goddard Space Flight Center in Greenbelt MD conducted a study to collect temperature and humidity data at 15 minute intervals from 12 sites on center. These sites represented the major surface types on center: asphalt, building roof, grass field, forest, and rain garden. The data show a strong distinction in the thermal properties of these surfaces on the center and the difference between the average value for the center compared to a local meteorological station. The data have been submitted to Oak Ridge National Laboratory Distributed Active Archive Center (ORNL-DAAC) for archival in comma separated value (csv) file format http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1319.

scholarly journals Retrieval of Atmospheric and Cloud Property Anomalies and Their Trend from Temporally and Spatially Averaged Infrared Spectra Observed from Space

2014 ◽  
Vol 27 (12) ◽  
pp. 4403-4420 ◽  
Author(s):  
Seiji Kato ◽  
Fred G. Rose ◽  
Xu Liu ◽  
Bruce A. Wielicki ◽  
Martin G. Mlynczak
Keyword(s):  
Standard Deviation ◽  
Confidence Interval ◽  
Spectral Radiance ◽  
True Temperature ◽  
Retrieval Error ◽  
Cloud Property ◽  
Clear Sky ◽  
Temperature And Humidity ◽  
Sky Radiance ◽  
The Difference

Abstract A surface, atmospheric, and cloud (fraction, height, optical thickness, and particle size) property anomaly retrieval from highly averaged longwave spectral radiances is simulated using 28 years of reanalysis. Instantaneous nadir-view spectral radiances observed from an instrument on a 90° inclination polar orbit are computed. Spectral radiance changes caused by surface, atmospheric, and cloud property perturbations are also computed and used for the retrieval. This study’s objectives are 1) to investigate whether or not separating clear sky from cloudy sky reduces the retrieval error and 2) to estimate the error in a trend of retrieved properties. This simulation differs from earlier studies in that annual 10° latitude zonal cloud and atmospheric property anomalies defined as the deviation from 28-yr climatological means are retrieved instead of the difference of these properties from two time periods. The root-mean-square (RMS) difference of temperature and humidity anomalies retrieved from all-sky radiance anomalies is similar to the RMS difference derived from clear-sky radiance anomalies computed by removing clouds. This indicates that the cloud property anomaly retrieval error does not affect the retrieved temperature and humidity anomalies. When retrieval errors are nearly random, the error in the trend of retrieved properties is small. Approximately 30% of 10° latitude zones meet conditions that the true temperature and water vapor amount trends are within a 95% confidence interval of retrieved trends, and that the standard deviation of retrieved anomalies σret is within 20% of the standard deviation of true anomalies σn. If σret/σn − 1 is within ±0.2, 91% of the true trends fall within the 95% confidence interval of the corresponding retrieved trend.

Research on the Influence of Temperature and Humidity to Asphalt Pavement Seedless Detection Technology

2014 ◽  
Vol 893 ◽  
pp. 573-576
Author(s):  
Hui Wei ◽  
Wei Li ◽  
Ping Liu
Keyword(s):  
Asphalt Pavement ◽  
Service Performance ◽  
Large Variability ◽  
Influence Of Temperature ◽  
Nuclear Detection ◽  
Detection Technology ◽  
Temperature And Humidity ◽  
The Difference ◽  
Pavement Testing ◽  
Compaction Degree

In order to study the asphalt pavement testing compaction technology accuracy with the non-nuclear density gauge.Pave TrackerTM Plus 2701-Bis used to research the influence of temperature and humidity, and Construction dynamic detection technology and methods is established basing on2701-B,And the type of mixture was studied. It is found that, because of the difference of temperature and humidity, the result of Compaction degree has the large variability, the increased with temperature and humidity, especially humidity affects more significant. Finally, the non-nuclear detection technology method of asphalt pavement is established, this paper presents adopting the temperature and humidity compensation or increasing the number of calibration samplesisand and testing used to make up accuracy, which can effectively improve the service performance of airport asphalt pavement.

scholarly journals Heat and dry islands observed over Jakarta, Indonesia, in 2012

2014 ◽  
Vol 364 ◽  
pp. 140-144
Author(s):  
H. Widyasamratri ◽  
K. Souma ◽  
T. Suetsugi ◽  
H. Ishidaira ◽  
Y. Ichikawa ◽  
...  
Keyword(s):  
Urban Areas ◽  
Thermal Environment ◽  
Monsoon Season ◽  
Sea Breeze ◽  
Early Morning ◽  
Specific Humidity ◽  
Air Temperatures ◽  
Temperature And Humidity ◽  
Urbanized Areas ◽  
The Difference

Abstract. Recent population increases in urban areas of Asian countries have extended artificial land cover, increased energy consumption, and caused various problems. Higher air temperatures over urban areas (heat islands) degrade residential environments and affect human health. In Jakarta, the largest city in Indonesia and the second largest city in Asia, previous studies have relied on only a few observation points and physically-based models. To study the thermal environment in Jakarta in more detail, we performed seven fixed-point temperature and humidity observations from the dry to the pre-monsoon season (from 16 September to 18 October) in 2012. Over densely urbanized areas, higher temperatures and lower humidity were observed around noon compared with the sparsely urbanized areas. The maximum differences in temperature and specific humidity were found to be around 3 °C and 0.005 kg/kg, respectively. The differences in temperature and humidity became smaller in the afternoon because of the penetration of sea breezes. At night, the differences became larger again because the sea breeze weakened. Then, a difference of around 3°C was observed, except in the early morning. Although the difference in daytime temperature was smaller between densely urbanized areas and suburban areas, similar tendency was also confirmed in the daily time series averaged for sunny days in dry season.

scholarly journals The Effect of Temperature and Humidity Against Lead (Pb) Concentration in the Air of Pontianak City

2014 ◽  
Vol 1 (1) ◽  
pp. 16-25
Author(s):  
Winardi
Keyword(s):  
Solar Radiation ◽  
Motor Vehicle ◽  
Weather Conditions ◽  
Effect Of Temperature ◽  
Traffic Density ◽  
Vehicle Exhaust ◽  
Temperature And Humidity ◽  
Density Factor ◽  
The Difference ◽  
Pb Concentration

The existence of Lead (Pb) pollutants in the air that generated by motor vehicle exhaust emissions determined by how large the influence of temperature and humidity tend to change according to time and weather influences. Temperature and humidity Changes in the earth's surface due to solar radiation in the morning-afternoon-evening will give change in the concentration of Pb in the air. With the days variation will be seen the influence of weather that gives the difference in temperature and humidity of each day so that the concentration of Pb in air pollutants, will be varied. This research looked at the extent to which the effect of environmental factors influence, like the temperature and humidity of the Pb concentration in the air. Sampling carried out based on the variation of the morning, afternoon and evening and Sunday till Monday variation. Temperature, humidity and weather conditions were measured and observed directly in the field, while Pb concentrations were analyzed in the laboratory. The results obtained were compared with each other. The results showed that the highest concentration of Pb in the morning, because in the morning the temperature more lower at the Earth's surface and humidity tends to be high which causes pollutants become hard to diluted and difficult to dispersed vertically upwards.Until the Earth's surface temperature rises, along with the increasing of solar radiation which causes the air temperature rises and air expands so as pollutants become diluted. On rainy days where the temperature drops and the humidity rises, the Pb concentrations tend to be higher. The results that obtained also show that the traffic density factor can not be ignored and can affect the the concentration of Pb in the air.  

scholarly journals Applicability of Heat Index for Effective Heatwave Response

2021 ◽  
Vol 21 (4) ◽  
pp. 23-30
Author(s):  
Ji Yoon Kang ◽  
Bong-Chur Park ◽  
Jongbae Heo ◽  
Keewook Kim
Keyword(s):  
Heat Index ◽  
Maximum Temperature ◽  
Daily Maximum Temperature ◽  
Daily Maximum ◽  
Maximum Heat ◽  
Temperature And Humidity ◽  
Summer Temperatures ◽  
The Difference ◽  
The Relationship

Damage caused by heatwaves has been increasing recently worldwide. As climate change led by global warming progresses, heatwaves are projected to cause the most damage. Thus, it is very important to issue an appropriate heatwave advisory so that one can be prepared for it. Considering that the degree of heat experienced by people differs depending on the difference in humidity between regions with similar summer temperatures, it is necessary to evaluate whether the issuance of a heatwave warning using only the daily maximum temperature is appropriate. This study intends to examine the applicability of the heat index considering both temperature and humidity for effective heatwave response. First, the agreement between the occurrences of heatwaves and heat-related illness, where the occurrence is decided by the daily maximum temperature and daily maximum heat index, was evaluated. The results show that when the daily maximum heat index was applied as a criterion for issuing a heatwave warning, the coincidence with the occurrence of heat-related illness was more than two times higher than when the daily maximum temperature was applied. Next, on evaluating the prediction accuracy of the heat index according to the prediction-related leading time, the accuracy of the heat index was noted to be higher than that of the temperature for all the leading times; the highest accuracy was shown at the leading time of 10 hours (NSE = 0.7196; CORR = 0.8698). Based on the results of this study, it is necessary to consider using a heat index that contains both temperature and humidity elements to issue a heatwave warning. Furthermore, to establish regional standards for heatwave warnings, the relationship between heatwave characteristics and meteorological factors should be first analyzed using long-term data from various observation points.

scholarly journals RANCANG BANGUN INSTRUMEN PENGUKUR SUHU DAN KELEMBAPAN UDARA MENGGUNAKAN DT-SENSE SHT11

2014 ◽  
Vol 14 (2) ◽  
pp. 113
Author(s):  
Imam Hidayat ◽  
Hesky Stevy Kolibu ◽  
Slamet Suyitno Raharjo
Keyword(s):  
Air Temperature ◽  
Low Cost ◽  
Measurement Instrument ◽  
Field Trials ◽  
Test Results ◽  
Standard Measurement ◽  
Humidity Measurement ◽  
Measurement Tools ◽  
Temperature And Humidity ◽  
The Difference

ABSTRAK Telah dilakukan pembuatan instumen pengukur suhu dan kelembapan udara menggunakan sensor DT-Sense SHT11 dan modul mikrokontroler DT-AVR Low Cost Micro System. Kemudian instrumen diuji dengan alat ukur standar. Pengujian dilakukan mulai bulan Juni 2013 dan berakhir bulan Oktober 2013di Laboratorium Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sam Ratulangi Manado dan pengujian lapangan dilakukan di Stasiun Meteorologi Kelas II Maritim Bitung. Hasil pengujian dianalisis dengan metode grafik, analisis Korelasi dan Uji t sampel berpasangan. Hasilnya berhasil dibuat dengan ketelitian pengukuran hingga 0,01oC untuk pengukuran suhu udara dan 0,0001% untuk pengukuran kelembapan udara. Terdapat selisih antara instrumen yang dibuat dengan alat ukur standar. Rata-rata 1,4 oC untuk suhu udara dan 3% untuk kelembapan relatif. Kata kunci: sensor, mokrokontroler, SHT11   DESIGN AND BUILD OF AIR TEMPERATURE AND HUMIDITY MEASUREMENT INSTRUMENT USING DT-SENSE SHT11 ABSTRACT Have been made a temperature and humidity measurement instrument using DT-Sense sensor SHT11 and microcontroller modules DT-AVR Low Cost Micro System.‎ Then the instrument was tested with standard measurement tools. The tests were conducted starting in June 2013 and ended in October 2013 at the Laboratory of Physics, Faculty of Mathematics and Natural Sciences, Sam Ratulangi University and field trials conducted in Class II Meteorological Station Maritime Bitung. The test results were analyzed by graphical method, correlation analysis and paired sample t test.The result of measurement accuracy up to 0,01oC for measuring air temperature and up to 0,0001% for air humidity measuring. The difference between the instruments are made with standard measurement tools. An average of 1.4 ° C for temperature and 3% for relative humidity. Keywords: sensor, microcontroller, SHT11

scholarly journals RELATIONSHIPS OF TEMPERATURE AND HUMIDITY TO THE BIODEGRADATION OF PETROLEUM HYDROCARBONS IN SOILS

2020 ◽  
Vol 58 (3A) ◽  
pp. 171
Author(s):  
Tran Thanh Chi ◽  
Nguyen Hai Yen
Keyword(s):  
Microbial Growth ◽  
Regression Equation ◽  
Natural Soil ◽  
Mineralization Rate ◽  
Soil Microcosms ◽  
Contaminant Degradation ◽  
Temperature And Humidity ◽  
Different Temperatures ◽  
The Difference ◽  
Water Contents

This work focused on monitoring CO2production, microbial growth and residual hydrocarbon concentration during bioremediation experiments performed on laboratory soil microcosms. A natural soil was artificially contaminated with hexadecane and adjusted with inorganic nutrients to stimulate biodegradation. Microbial growth, CO2production and residual hexadecane were periodically monitored at different soil water contents ranging from 0.15 to 0.25 g water g_1 of dry soil and at different temperatures ranging from 20 to 25oC. Results showed that the humidity has a greater effect on microbial activity and contaminant degradation than the temperature. The study established the experimental regression equation of temperature and humidity to the hexadecane mineralization rate, an important parameter in assessing the ability to convert organic carbon into inorganic carbon. The difference between the results of the hexadecane mineralization rate obtained from the experiment and calculated from the regression equation is not too high, from 2% to 20%.

scholarly journals HPLC-DAD-ESI/MS Monitoring of Stilbenes Content in Vranac Red Wines Produced with Traditional and Modern Fermentation Methods

2020 ◽  
Vol 39 (1) ◽  
pp. 49
Author(s):  
Danijela Raicevic ◽  
Tatjana Popovic ◽  
Violeta Ivanova-Petropulos ◽  
Jasmina Petreska Stanoeva ◽  
Vesna Maras
Keyword(s):  
Red Wines ◽  
Esi Ms ◽  
Oak Chips ◽  
Fermentation Method ◽  
Temperature And Humidity ◽  
The Difference

Quantification of stilbenes was performed on Vranac wines (vintage 2008 and 2009) produced by traditional and modern fermentation methods, applying different enological additions (enzyme, oak chips and grape tannins). Stilbenes, trans-resveratrol and trans-resveratrol-3-glucoside were determined using the HPLC/DAD/ESI-MS and MS/MS technique. Trans-resveratrol ranged from 0.09 to 3.3 mg/L and the trans-resveratrol-3-glucoside was present in a range of 1.13 to 2.6 mg/L. The influence of vintage, fermentation tanks and enological additions was noticed on the content of stilbenes. Wines from vintage 2008 presented higher amount of stilbenes (on average: 1.89 mg/L) compared to the wines from 2009 (on average: 1.59 mg/L) probably because of the difference in the temperature and humidity in both years. Application of modern fermentation tanks (Sifa and Ganimede) followed by additions of enzyme, oak chips and grape tannins resulted in a higher amount of stilbenes. PCA presented grouping of wines according to the applied fermentation method.

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