Satellite based water balance of the Nile River basin a multisensor approach

Date

2013-12-09

Author

Zaitchik, Benjamin F
Anderson, Martha C
Ozdogan, Mutlu
Yılmaz, Mustafa Tuğrul

Metadata

Show full item record

Item Usage Stats

190
views

0
downloads

Satellite-informed estimates of distributed hydrologic fluxes and storages in remote, ungauged, or contentious river basins is the subject of active research. Here we review recent developments in remotely sensed water flux and balance estimates for large basins, including the Nile River basin, and present results of a new analysis that applies TRMM, GRACE, and a Meteosat-based implementation of the ALEXI evapotranspiration algorithm to generate spatially and temporally distributed estimates of hydrologic fluxes and storages in the Nile basin. Results are evaluated using previous studies of the Nile water balance, historic river gauge data, and available in situ measurements of distributed fluxes. It is found that the independent estimates of precipitation, water storage changes, and evapotranspiration offered by TRMM, GRACE, and ALEXI, respectively, can be used to close the climatological water balance of the Nile River basin and critical Nile subbasins to first order, but that the technique has limitations at shorter time scales due to random error, at smaller spatial scales, due to resolution limitations, and in the characterization of systematic error due to limited availability of relevant in situ observations. The strengths and limitations of the analysis will be evaluated with respect to alternative methodologies and to resource information needs in the Nile basin.

Subject Keywords

Remote sensing, Hydrological cycles and budgets, Water management, Water budgets

URI

https://hdl.handle.net/11511/77868

Conference Name

American Geophysical Union Fall Meeting 2013 (9 - 13 Aralık 2013)

Collections

Department of Civil Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Remotely Sensed Terrestrial Water Balance of the Nile Basin Smith, Tiffany; Zaitchik, Ben; Anderson, Martha; Yılmaz, Mustafa Tuğrul; Alo, Clement; Rodell, Matthew (2011-12-05) Satellite-derived estimates of precipitation, evapotranspiration (ET), and water storage have transformed our understanding of hydrological dynamics at the basin scale. At the same time, the profusion of satellite and model-generated hydrological estimates has demonstrated that there is still considerable uncertainty associated with the quantification of hydrologic states and fluxes at basin scale: the use of different combinations of data products can lead to dramatically different conclusions regarding wa...
Comparison of groundwater recharge estimation techniques: a case study from the Kucuk Menderes River basin in Turkey Gundogdu, A; Yazıcıgil, Hasan; Kirmizitas, H (2000-04-01) Quantification of groundwater recharge is a basic prerequisite for efficient groundwater management. While there are several approaches to estimating groundwater recharge rates, some of the approaches proposed cannot be applied in basin-wide hydrogeological investigations due to a lack of data. Thus, some conventional recharge estimation techniques for which data are most often available have to be used in estimating groundwater recharge. In this study, water level fluctuation, the precipitation vs water le...
Hierarchical approach to semi-distributed hydrological model calibration Özdemir, Ayfer; Leloğlu, Uğur Murat; Abbaspour, Karim; Department of Geodetic and Geographical Information Technologies (2016) In recent years, water resources were negatively affected from uncontrolled agricultural, industrial activities and settlements on river basins. Hydrologists and water resource managers have widely used hydrologic models as tools for water resources development, water environment preservation, water resources allocation and understanding utilization. In order to apply hydrological models successfully in practical water resources investigations, careful calibration and uncertainty analysis are needed. Hydrol...
Alternative solutions for long missing streamflow data for sustainable water resources management Mesta, Buket; Akgün, Ömer Burak; Kentel Erdoğan, Elçin (Informa UK Limited, 2020-08-01) Sustainable water resources management requires long time series of streamflow data. In this study, a Takagi-Sugeno fuzzy rule-based (FRB) model is developed to reconstruct long periods of missing daily streamflow data which is a common problem in developing countries. The FRB model uses observations of neighbouring stream gauges, and thus is advantageous regarding data and time requirement compared to physical models. With the proper set of inputs, the FRB model provides better estimates than the hydrologi...
Local site characterization and seismic zonation study by utilizing active and passive surface wave methods: A case study for the northern side of Ankara, Turkey Eker, Arif Mert; Akgün, Haluk; Kockar, Mustafa Kerem (2012-11-29) This study encompasses dynamic soil characterization and site classification zonation mapping of the Plio-Quaternary and especially Quaternary alluvial sediments based on the current seismic codes. The study area is located in the Cubuk district and its surrounding area that is situated towards the north of Ankara, the capital of Turkey. The project site is located in a region which has the potential of being seriously affected by probable seismic events occurring along the Cubuk Fault Zone. The Cubuk Fault...

Citation Formats

B. F. Zaitchik, M. C. Anderson, M. Ozdogan, and M. T. Yılmaz, “Satellite based water balance of the Nile River basin a multisensor approach,” presented at the American Geophysical Union Fall Meeting 2013 (9 - 13 Aralık 2013), San Francisco, USA, 2013, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/77868.