scholarly journals Towards Subdaily Rainfall Disaggregation via Clausius–Clapeyron

2014 ◽  
Vol 15 (3) ◽  
pp. 1303-1311 ◽  
Author(s):  
G. Bürger ◽  
M. Heistermann ◽  
A. Bronstert

Abstract Two lines of research are combined in this study: first, the development of tools for the temporal disaggregation of precipitation, and second, some newer results on the exponential scaling of heavy short-term precipitation with temperature, roughly following the Clausius–Clapeyron (CC) relation. Having no extra temperature dependence, the traditional disaggregation schemes are shown to lack the crucial CC-type temperature dependence. The authors introduce a proof-of-concept adjustment of an existing disaggregation tool, the multiplicative cascade model of Olsson, and show that, in principal, it is possible to include temperature dependence in the disaggregation step, resulting in a fairly realistic temperature dependence of the CC type. They conclude by outlining the main calibration steps necessary to develop a full-fledged CC disaggregation scheme and discuss possible applications.

Wind Energy ◽  
2011 ◽  
Vol 14 (6) ◽  
pp. 719-734 ◽  
Author(s):  
R. Baïle ◽  
J. F. Muzy ◽  
P. Poggi

2016 ◽  
Vol 42 (1) ◽  
Author(s):  
Leonardo Emberti Gialloreti ◽  
Arianna Benvenuto ◽  
Barbara Battan ◽  
Francesca Benassi ◽  
Paolo Curatolo

2014 ◽  
Vol 166 ◽  
pp. 139-143 ◽  
Author(s):  
Sidney H. Kennedy ◽  
Peter Giacobbe ◽  
Franca Placenza ◽  
Craig J. Hudson ◽  
Philip Seeman ◽  
...  

2010 ◽  
Vol 7 (4) ◽  
pp. 5267-5297 ◽  
Author(s):  
L. Wang ◽  
C. Onof ◽  
C. Maksimovic

Abstract. This work aims to develop a semi-deterministic multiplicative cascade method for producing reliable short-term (sub-daily) rainfall sequences. The scaling feature of sub-daily rainfall sequences is analysed over the timescales of interest (i.e., 5 min to hourly in this research) to help derive the crucial parameters, i.e., the fragmentation ratios, for the proposed method. These derived ratios are then further used to stochastically disaggregate hourly rainfall sequences to 5-min using the multiplicative cascade process. The log-Poisson distributed cascade method is involved in this work to validate the proposed methodology by comparing certain statistics of the generated rainfall sequences over a specific range of timescales. The results demonstrate that the proposed methodology in general has the ability to reproduce the patterns of sub-daily rainfall observations from Greenwich raingauge station in London.


1976 ◽  
Vol 54 (12) ◽  
pp. 1248-1257 ◽  
Author(s):  
R. F. Code ◽  
J. Higinbotham

Short term measurements were made of the static proton magnetic susceptibility of solid CH4 containing O2 impurities in the temperature range between 1.6 and 80 K. The samples were slowly crystallized and annealed above 80 K. A low level NMR Q-meter detector was used to measure the temperature dependence of the polarization of the hydrogen nuclei in methane relative to the polarization of fluorine nuclei in a thick teflon coil form surrounding the sample after thermal equilibration times of up to 2 h. The results can be consistently interpreted according to the James–Keenan model for Phase II of solid methane by assuming that, during a 2 h period, proton spin symmetry conversion essentially comes to equilibrium on the two disordered sublattices whose molecules are in states of nearly free rotation, but that conversion does not significantly occur within this time for molecules on the six remaining ordered sublattices.


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