Paper accepted: Estimating the water budget components and their variability in a Pre-Alpine basin with JGrass-NewAGE

Finally our paper, on the water budget component estimation in the case where there are some in-situ observations  and when the area is dominated by snow, is accepted. Due to the complexities of issues involved and the tools needed, it has been two/three years since I started to work on this paper. When I say complexities, it mean that while the main goal is  one (i.e. water budget closure spatially, lets say each HRU), but the specific objectives are too many, i.e.

1. Comparison various interpolators/or if possible improve some of the approaches used in literature, with the objective to identify a method that provides more accurate rainfall fields.

2. When a basin is dominated by snow, you can not afford to ignore the snow process, and hence, how much of the total precipitation falling in the form of snowfall is really its own line of research. So we had to come up with some means to do this, and that was the second objective of the paper. 

3. The estimation of ET is problematic. In literature people uses the potential ET to estimate discharge, but most studies does not show actual ET. Hydrological studies are dominated by the rainfall-runoff exercise, with the aim to optimise discharge modelling to obtain high agreement with observed discharge.  From my experience, particularly gained from working on this paper, obtaining discharge estimation having good agreement with discharge observation does not require reasonable estimation of either potential ET or actual ET. Hence, modelling rainfall-runoff, without proper characterisation of ET, could not be the art of science in hydrology. so, the third objective is to estimate ET, which is consistent with the other water budget components.

4. Storage is probable the most difficult to estimate/model at basin scale, hence, the other specific objective of the paper is to develop a methodology for estimating storage at basin scale. 

It was started as two papers, but later we decided to compress them into one. This mean that we have to cut out many results and issues. All this processes took time. In anyway, if you are interested, please find the accepted manuscript here.  

Nile is flowing out from the Upper Blue Nile basin

Nile is flowing out from the Upper Blue Nile basin, I mean, here at my blog.  We have been working on the Upper Blue Nile basin to estimate each term of the water budget at various time scale and temporal scale. Discharge needs to be modelled at each channel links and  can be verified at links where there is observation data. The discharge for the summer 1994 is shown in the following animation. The daily  discharge  from May - Sept 1994 of each channels of  Upper Blue Nile basin was like this, as we estimated!

Fig: discharge at each channel link for each day from May 01 to Sept 31, 1994