نتایج جستجو برای: precipitation day

تعداد نتایج: 396590  

Journal: :جغرافیا و مخاطرات محیطی 0
مجید رضائی بنفشه محمد سعید نجفی حبیبه نقی زاده شعیب آب خرابات

introduction long-term annual extreme climate events, especially temperature and precipitation, have generally been used as indicators for the assessment of climate change. one of the most changeable climatic variables in time and space is precipitation. there are great number of research papers focusing on extreme precipitation on global, regional and national scales have been written. the res...

2017
Yu-Tzu Wu Robert Luben Nicholas Wareham Simon Griffin Andy P. Jones

BACKGROUND A wide range of environmental factors have been related to active ageing, but few studies have explored the impact of weather and day length on physical activity in older adults. We investigate the cross-sectional association between weather conditions, day length and activity in older adults using a population-based cohort in England, the European Prospective Investigation into Canc...

2002
Xin Lin Laura D. Fowler David A. Randall

[1] By incorporating the Tropical Rainfall Measurement Mission (TRMM) satellite orbital information into the Colorado State University General Circulation Model (CSUGCM), we are able to ‘‘fly’’ a satellite in theGCMand sample the simulated atmosphere in the sameway as the TRMM sensors sample the real atmosphere. The TRMM-sampled statistics for precipitation and radiative fluxes at annual, intra...

1997
J. JOUZEL K. FROEHLICH U. SCHOTTERER

The cycles of the water isotopic species (HDO and H2 0) have been incorporated in three atmospheric General Circulation Models (GCMs) with the main objective of predicting the distribution of water stable isotopes in precipitation, The performances of those models are examined for present-day climate through a comparison with existing data available from the IAEA/WMO network established in 1961...

Journal: :Atmosphere 2023

This study compares the bias correction techniques of empirical quantile mapping (QM) and Long Short-Term Memory (LSTM) machine learning model for summertime daily rainfall simulation focusing on precipitation-dependent temporal variation. Numerical experiments using Weather Research Forecasting (WRF) were conducted over South Korea with lateral boundary conditions ERA5 reanalysis data. For spa...

2008
Roger J. BRAITHWAITE

Several authors relate accumulation (or precipitation) at the glacier equilibrium-line altitude (ELA) to summer mean temperature using exponential or power-law functions. I analyze the accumulation–temperature relation at the ELA with a degree-day model using data from the 1992 paper by A. Ohmura and others. The dataset includes estimates at the ELA of winter balance and of ‘winter balance plus...

Journal: :Journal of medical entomology 2006
Scott M Shone Frank C Curriero Cyrus R Lesser Gregory E Glass

Numerous studies have investigated the role of weather on insect species. For mosquitoes, these studies have yielded mixed results. Although it is clear that weather impacts mosquito population dynamics, these investigations have failed to accurately characterize their fluctuations. We use a novel graphical method to examine large numbers of meteorological aggregations of varying lengths and la...

2010
J. T. Eronen K. Puolamäki L. Liu K. Lintulaakso J. Damuth C. Janis M. Fortelius Jussi T. Eronen

Question: How can mammalian community characteristics be used to estimate regional precipitation? Data: Global distribution data of large mammals and their ecomorphology; global climate data. Research methods: Non-linear regression-tree analysis and linear regression. Conclusions: The methods unravelled the complex relationships between the environment and the characteristics of mammalian commu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ریاضی و کامپیوتر 1390

در این پژوهش مسئله واگذاری ترافیک را از دید سیستم های دینامیکی فرمول بندی می کنیم.فرض کرده ایم که همه فاکتورهای وابسته در طول زمان ثابت باشند و تعادل کاربر را از طریق فرایند منظم روزبه روز پیگیری کنیم.دینامیک ترافیک توسط یک نگاشت بازگشتی نشان داده می شود که تکامل سیستم در طول زمان را نشان می دهد.پایداری تعادل و دامنه جذب را توسط مطالعه ویژگی های توپولوژیکی تکامل سیستم تجزیه و تحلیل می کنیم.پاید...

2011
Yang LIU Meng GUO Xiufeng WANG Hiroshi TANI Kunpeng YI

From winter 2009 to spring 2010, due to decreasing precipitation and high temperature, Southwest China experienced the worst meteorological drought in 60 years. The drought has impacted large areas of Guizhou, Yunnan, Guangxi and Sichuan provinces. In this paper, climate data (precipitation and temperature) and SPOT VGT Normalized Difference Vegetation Index (NDVI) data were combined with land ...

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