نتایج جستجو برای: daily sunshine duration

تعداد نتایج: 391818  

Journal: :Atmosphere 2023

The aim of this research is to compare daily sunshine duration data measured using a Campbell–Stokes recorder (CS) and CSD3 sensor. This was undertaken because in recent decades automatic sensors have been systematically replacing traditional recorder. replacement created problem with the quality, continuity homogeneous series. study material consisted sums derived from synchronous manual autom...

2002
Katja Riedel Rolf Weller Otto Schrems Alfred Wegener

The annual cycle of formaldehyde (HCHO) has been investigated at a remote surface-site in Antarctica. HCHO mixing-ratios during the period of stratospheric ozone depletion are significantly higher than during times of similar sunshine duration in austral autumn. This might be due to enhanced UV-B radiation.

2013
Lan-gong Hou Song-bing Zou Hong-lang Xiao Yong-gang Yang

The standardized FAO56 Penman-Monteith model, which has been the most reasonable method in both humid and arid climatic conditions, provides reference evapotranspiration (ETo) estimates for planning and efficient use of agricultural water resources. And sensitivity analysis is important in understanding the relative importance of climatic variables to the variation of reference evapotranspirati...

Journal: :Energies 2023

The ability to accurately predict daily solar radiation reaching the earth’s surface is essential in applications such as power generation. Given their ease of use, many empirical models have been proposed based on different dependent variables cloud cover, temperature range, etc. In this study we evaluate 23 these for prediction northern coastal zone Iberian Peninsula. Daily measurements durin...

2011
Rob Eisinga Philip Hans Franses Maurice Vergeer

This study examines the impact of daily atmospheric weather conditions on daily television use in the Netherlands for the period 1996-2005. The effects of the weather parameters are considered in the context of mood and mood management theory. It is proposed that inclement and uncomfortable weather conditions are associated with lower human mood, and that watching entertainment and avoiding inf...

2010
Mireille LEFEVRE Jan REMUND Michel ALBUISSON

This work explores the possibility of integrating the geographical elements such as orography and presence of water bodies as well as the latitudinal effects into an effective distance when interpolating meteorological fields. This effective distance may then be used in any interpolation methods instead of the standard geodetic distance. Several hundreds of sites are used in Europe to assess th...

Journal: :The Journal of the Association of Physicians of India 2009
C V Harinarayan Shashank R Joshi

Vitamin D deficiency is epidemic in India despite of plenty of sunshine. The interpretation of vitamin D levels should be done with the solar zenith angle, minimal erythemal dose, skintype, UV Index and geographical location. All Indian studies uniformly point to low 25(OH)D levels in the populations studies despite abundant sunshine. All studies have uniformly documented low dietary calcium in...

2017
GEORGIOS MAKRIS

Makris, G. 2017. Suicide Seasonality. Theoretical and Clinical Implications. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine 1383. 74 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-513-0108-2. Background: Although suicide seasonality has been well-documented, surprisingly little is known about its underlying mechanisms. Methods: In this thesis, da...

2011
Laura Hiltunen Kirsi Suominen Jouko Lönnqvist Timo Partonen

BACKGROUND Many previous studies have documented seasonal variation in suicides globally. We re-assessed the seasonal variation of suicides in Finland and tried to relate it to the seasonal variation in daylength and ambient temperature and in the discrepancy between local time and solar time. METHODS The daily data of all suicides from 1969 to 2003 in Finland (N = 43,393) were available. The...

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