Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Muhammad Ali Shamim"'
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 129:13-22
Global solar radiation is the driving force in hydrological cycle especially for evapotranspiration (ET) and is quite infrequently measured. This has led to the reliance on indirect techniques of estimation for data scarce regions. This study present
Publikováno v:
KSCE Journal of Civil Engineering. 20:971-977
Storage dams play a very important role in irrigation especially during lean periods. For proper regulation one should make sure the availability of water according to needs and requirements. Normally regression techniques are used for the estimation
Autor:
Usman Ali Naeem, Muhammad Ali Shamim, Abdul Razzaq Ghumman, Hashim Nisar Hashmi, Abdul Sattar Shakir, Habib-ur-Rehman
Publikováno v:
KSCE Journal of Civil Engineering. 19:1538-1547
Almost in all hydrological models, calibrating parameters are tuned to best match the simulated results with the observed. In the present study sensitivity analysis was carried on the fifteen calibrating parameters of University of British Columbia W
Publikováno v:
Theoretical and Applied Climatology. 122:403-420
A hybrid technique for solar radiation estimation, a core part of hydrological cycle, is presented in this study which parameterises the cloud cover effect (cloud cover index) not just from the geostationary satellites but also the PSU/NCAR’s Mesos
Autor:
Imtiaz Ahmed, Dawei Han, Ghufran Ahmed Pasha, Abdul Razzaq Ghumman, Hashim Nisar Hashmi, Muhammad Hassan, Muhammad Ali Shamim, Syed Zishan Ashiq, Usman Ali Naeem
Publikováno v:
Earth Science Informatics. 8:337-352
Population increase and climate change are stretching not only the world’s but also Pakistan’s water resources. This has directly been responsible for the recurring patterns of floods and droughts in the country which emphasizes the importance of
Publikováno v:
Journal of Zhejiang University SCIENCE A. 13:717-722
This paper presents an improved model for global sunshine duration estimation. The methodology incorporates geostationary satellite images by including snow cover information, sun and satellite angles and a trend correction factor for seasons, for th
Publikováno v:
Proceedings of the Institution of Civil Engineers - Water Management. 163:349-359
Modelling in ungauged catchments has always been a complicated issue due to scarcity of the requisite data. Therefore, hydrologists have to rely on indirect techniques of estimation. A novel approach is hereby presented for solar radiation estimation
Publikováno v:
Journal of Hydroinformatics. 12:396-407
Rainfall–runoff is a complicated nonlinear process and many data mining tools have demonstrated their powerful potential in its modelling but still there are many unsolved problems. This paper addresses a mostly ignored area in hydrological modelli
Publikováno v:
Journal of Hydrology. 372:48-60
Rainfall runoff is a very complicated process due to its nonlinear and multidimensional dynamics, and hence difficult to model. There are several options for a modeller to consider, for example: the type of input data to be used, the length of model
Publikováno v:
Hydrological Processes. 22:4301-4309
Hydrological modelling is a complicated procedure and there are many tough questions facing all modellers: what input data should be used? how much data is required? and what model should be used? In this paper, the gamma test (GT) has been used for