Analysis of behaviour and relationship of four daily precipitation concentration indices according to Mexico's precipitation

2021 ◽  
Author(s):  
Gerardo Núñez‐González
Keyword(s):  
Daily Precipitation ◽  
Precipitation Concentration ◽  
Relationship Of ◽  
Concentration Indices

Trends of daily precipitation concentration in Central-Southern Chile

2019 ◽  
Vol 215 ◽  
pp. 85-98 ◽  
Author(s):  
Pablo Sarricolea ◽  
Óliver Meseguer-Ruiz ◽  
Roberto Serrano-Notivoli ◽  
María Victoria Soto ◽  
Javier Martin-Vide
Keyword(s):  
Daily Precipitation ◽  
Southern Chile ◽  
Precipitation Concentration

Spatial Distribution and Temporal Trends in Precipitation Concentration Indices for the Southwest China

2015 ◽  
Vol 29 (11) ◽  
pp. 3941-3955 ◽  
Author(s):  
Peng Shi ◽  
Miao Wu ◽  
Simin Qu ◽  
Peng Jiang ◽  
Xueyuan Qiao ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Southwest China ◽  
Temporal Trends ◽  
Precipitation Concentration ◽  
Concentration Indices

scholarly journals Spatial distribution of the daily precipitation concentration index in Algeria

2015 ◽  
Vol 15 (3) ◽  
pp. 617-625 ◽  
Author(s):  
A. Benhamrouche ◽  
D. Boucherf ◽  
R. Hamadache ◽  
L. Bendahmane ◽  
J. Martin-Vide ◽  
...  
Keyword(s):  
Concentration Index ◽  
Rainfall Intensity ◽  
Daily Precipitation ◽  
Temporal Distribution ◽  
Daily Rainfall ◽  
Precipitation Concentration Index ◽  
Precipitation Concentration ◽  
Northern Country ◽  
Torrential Rainfall ◽  
Erosive Capacity

Abstract. In this paper, the spatial and temporal distribution of the daily precipitation concentration index (CI) in Algeria (south Mediterranean Sea) has been assessed. CI is an index related to the rainfall intensity and erosive capacity; therefore, this index is of great interest for studies on torrential rainfall and floods. Forty-two daily rainfall series based on high-quality and fairly regular rainfall records for the period from 1970 to 2008 were used. The daily precipitation CI results allowed the identification of three climate zones: the northern country, characterized by coastal regions with CI values between 0.59 and 0.63; the highlands, with values between 0.57 and 0.62, except for the region of Biskra (CI = 0.70); and the southern region of the country, with high rainfall concentrations with values between 0.62 and 0.69.

scholarly journals Spatial Characteristics of Precipitation in the Greater Sydney Metropolitan Area as Revealed by the Daily Precipitation Concentration Index

Atmosphere ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 627
Author(s):  
Kevin K. W. Cheung ◽  
Aliakbar. A. Rasuly ◽  
Fei Ji ◽  
Lisa T.-C. Chang
Keyword(s):  
Spatial Distribution ◽  
Metropolitan Area ◽  
Concentration Index ◽  
Daily Precipitation ◽  
Thunderstorm Activity ◽  
Kriging Interpolation ◽  
Precipitation Concentration Index ◽  
Blue Mountains ◽  
Precipitation Concentration ◽  
Cross Covariance

In this study; the spatial distribution of the Daily Precipitation Concentration Index (DPCI) has been analyzed inside the Greater Sydney Metropolitan Area (GSMA). Accordingly, the rainfall database from the Australian Bureau of Meteorology archive was utilized after comprehensive quality control. The compiled data contains a set of 41 rainfall stations indicating consistent daily precipitation series from 1950 to 2015. In the analysis of the DPCI across GSMA the techniques of Moran’s Spatial Autocorrelation has been applied. In addition, a cross-covariance method was applied to assess the spatial interdependency between vector-based datasets after performing an Ordinary Kriging interpolation. The results identify four well-recognized intense rainfall development zones: the south coast and topographic areas of the Illawarra district characterized by Tasman Sea coastal regions with DPCI values ranging from 0.61 to 0.63, the western highlands of the Blue Mountains, with values between 0.60 and 0.62, the inland regions, with lowest rainfall concentrations between 0.55 and 0.59, and lastly the districts located inside the GSMA with DPCI ranging 0.60 to 0.61. Such spatial distribution has revealed the rainstorm and severe thunderstorm activity in the area. This study applies the present models to identify the nature and mechanisms underlying the distribution of torrential rains over space within the metropolis of Sydney, and to monitor any changes in the spatial pattern under the warming climate.

scholarly journals Daily Precipitation Concentration in Central Coast Vietnam

2021 ◽  
Author(s):  
Aziz Benhamrouche ◽  
Javier Martin-Vide ◽  
Quoc Bao Pham ◽  
Mostefa E. Kouachi ◽  
M. Carmen Moreno-Garcia
Keyword(s):  
Exponential Distribution ◽  
Frequency Distribution ◽  
Linear Correlation ◽  
Concentration Index ◽  
Daily Precipitation ◽  
Central Coast ◽  
Cumulative Percentage ◽  
Precipitation Concentration ◽  
Negative Exponential Distribution ◽  
Negative Exponential

Abstract Empirical frequency distribution of daily precipitation amounts can be fitted by a negative exponential distribution, because anywhere there are many small daily totals and few large ones. Therefore, the cumulative percentages of days with precipitation, sorted in increasing order according to their amounts, against the cumulative percentage of the rainfall amounts that they contribute are fitted by positive exponential curves Y = aX, a and b constants. Based on these curves, the Concentration Index (CI) evaluates the contribution of the rainiest days to the total amount. In this study the CI has been calculated for 15 meteorological stations in Da Nang city and Quang Nam province in Central Coast Vietnam, for the 1979–2016 period. The results show high values of CI, ranging from 0.62 to 0.72. Conversely, the linear correlation between altitude and CI is negative (R=-0.60, p < 0.01). There are no correlations between the latitude nor the annual mean number of precipitation days and the CI. CI change for the sub-periods of 1979–1997 and 1998–2016 is also analyzed.

scholarly journals Indices of trends of climatic changes for the states of the Bahia and Sergipe by means of daily precipitacion indices and its relation with SST'S of the Pacific and Atlantic

2011 ◽  
Vol 26 (4) ◽  
pp. 541-554 ◽  
Author(s):  
Winícius dos Santos Araújo ◽  
José Ivaldo Barbosa de Brito
Keyword(s):  
Climate Changes ◽  
Daily Precipitation ◽  
Global Climate ◽  
Precipitation Data ◽  
Global Climate Changes ◽  
The Pacific ◽  
Daily Precipitation Data ◽  
Annual Scale ◽  
Relationship Of ◽  
Sst Anomalies

The objective of this study was to investigate statistically the precipitation variability in annual scale from the states of the Bahia and Sergipe using daily precipitation data. From that, indexes of detection of climate changes were calculated to evaluate the relationship of the most significant indexes with the sea surface temperature (SST) anomalies of the Pacific and Atlantic oceans. The daily precipitation data used were for a period of 45 years of 75 meteorological stations supplied by the old net of the SUDENE available in the DSA and data of the of the SST anomalies obtained from NOAA. Influence of SST of the Pacific and Atlantic oceans on the precipitation of the studied area is evidenced. A decrease of CWD was verified; increase was observed in the number days with rain; therefore, the amount of annual total precipitation increased. Several stations presented positive or negative tendencies in all examined indexes, consequently, they are also related to regional aspects. Therefore, it is not possible to affirm that the climate alterations noted in the study area are due to the global climate changes.

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