Rainfall distribution in the Andes of southern Ecuador derived from blending weather radar data and meteorological field observations

Rollenbeck, Rütger; Bendix, Jörg

doi:10.1016/j.atmosres.2010.10.018

Cited by 118 publications

(97 citation statements)

References 24 publications

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“…In this regard, high correlations between the TMPA-3B42R and the rain gauge data were still found for the monthly resolution (to be detailed shortly). A monthly bias correction for the TMPA-3B42R research data has been adopted previously by other researchers as well (Bell and Kundu, 2003;Hughes, 2006;Huffman et al, 2007;Rollenbeck and Bendix, 2011;Vernimmen et al, 2012). For that objective, Huffman et al (2007) used specific global stations.…”

Section: Methodology and Resultsmentioning

confidence: 99%

“…A large number of publications have reported worldwide experiences in the use of TRMM Multi-satellite Precipitation Analysis (TMPA) products (Nicholson, 2005;Hughes, 2006;Wong and Chiu, 2008;Buarque et al, 2011;Rollenbeck and Bendix, 2011), particularly the 3B42 research type, version 6 (Huffman et al, 2007). In this regard, two lines of research can be distinguished.…”

Section: Introductionmentioning

confidence: 99%

“…And precisely these hilly areas are frequently the most unattended by the national weather agencies in terms of ground data availability. To tackle this problem, TMPA and in general satellite data may contribute to better comprehend the spatial and temporal pattern features of precipitation, in particular if space-borne and gauge data complement each other (Rollenbeck and Bendix, 2011). This possibility still needs to be investigated in areas with large spatial variability of rainfall.…”

Section: Introductionmentioning

confidence: 99%

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Experiences in using the TMPA-3B42R satellite data to complement rain gauge measurements in the Ecuadorian coastal foothills

Arias-Hidalgo

Bhattacharya

Mynett

et al. 2013

Hydrol. Earth Syst. Sci.

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Abstract. At present, new technologies are becoming available to extend the coverage of conventional meteorological datasets. An example is the TMPA-3B42R dataset (research -v6). The usefulness of this satellite rainfall product has been investigated in the hydrological modeling of the Vinces River catchment (Ecuadorian lowlands). The initial TMPA-3B42R information exhibited some features of the precipitation spatial pattern (e.g., decreasing southwards and westwards). It showed a remarkable bias compared to the groundbased rainfall values. Several time scales (annual, seasonal, monthly, etc.) were considered for bias correction. High correlations between the TMPA-3B42R and the rain gauge data were still found for the monthly resolution, and accordingly a bias correction at that level was performed. Bias correction factors were calculated, and, adopting a simple procedure, they were spatially distributed to enhance the satellite data. By means of rain gauge hyetographs, the bias-corrected monthly TMPA-3B42R data were disaggregated to daily resolution. These synthetic time series were inserted in a hydrological model to complement the available rain gauge data to assess the model performance. The results were quite comparable with those using only the rain gauge data. Although the model outcomes did not improve remarkably, the contribution of this experimental methodology was that, despite a high bias, the satellite rainfall data could still be corrected for use in rainfall-runoff modeling at catchment and daily level. In absence of rain gauge data, the approach may have the potential to provide useful data at scales larger than the present modeling resolution (e.g., monthly/basin).

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Section: Methodology and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experiences in using the TMPA-3B42R satellite data to complement rain gauge measurements in the Ecuadorian coastal foothills

Arias-Hidalgo

Bhattacharya

Mynett

et al. 2013

Hydrol. Earth Syst. Sci.

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“…Tropical easterlies are forced to ascend the eastern escarpment which results in values > 6000 mm (Rollenbeck and Bendix, 2011). After passing the main ridge, massive föhn walls develop, which leads to dry conditions west of the main divide.…”

Section: Study Areamentioning

confidence: 99%

“…After passing the main ridge, massive föhn walls develop, which leads to dry conditions west of the main divide. The area around Catamayo in particular is characterized by a dry climate (< 400 mm rainfall per year; Rollenbeck and Bendix, 2011). Vegetation patterns reflect this strong climatic gradient.…”

Section: Study Areamentioning

confidence: 99%

Landslide susceptibility near highways is increased by 1 order of magnitude in the Andes of southern Ecuador, Loja province

Brenning

Schwinn

Ruiz-Páez

et al. 2015

Nat. Hazards Earth Syst. Sci.

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Abstract. Mountain roads in developing countries are known to increase landslide occurrence due to often inadequate drainage systems and mechanical destabilization of hillslopes by undercutting and overloading. This study empirically investigates landslide initiation frequency along two paved interurban highways in the tropical Andes of southern Ecuador across different climatic regimes. Generalized additive models (GAM) and generalized linear models (GLM) were used to analyze the relationship between mapped landslide initiation points and distance to highway while accounting for topographic, climatic, and geological predictors as possible confounders. A spatial block bootstrap was used to obtain nonparametric confidence intervals for the odds ratio of landslide occurrence near the highways (25 m distance) compared to a 200 m distance. The estimated odds ratio was 18-21, with lower 95 % confidence bounds > 13 in all analyses. Spatial bootstrap estimation using the GAM supports the higher odds ratio estimate of 21.2 (95 % confidence interval: 15.5-25.3). The highway-related effects were observed to fade at about 150 m distance. Road effects appear to be enhanced in geological units characterized by Holocene gravels and Laramide andesite/basalt. Overall, landslide susceptibility was found to be more than 1 order of magnitude higher in close proximity to paved interurban highways in the Andes of southern Ecuador.

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Direct and plant‐mediated effects of climate on bird diversity in tropical mountains

Vollstädt

Albrecht

Böhning‐Gaese

et al. 2020

Ecology and Evolution

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Rainfall distribution in the Andes of southern Ecuador derived from blending weather radar data and meteorological field observations

Cited by 118 publications

References 24 publications

Experiences in using the TMPA-3B42R satellite data to complement rain gauge measurements in the Ecuadorian coastal foothills

Experiences in using the TMPA-3B42R satellite data to complement rain gauge measurements in the Ecuadorian coastal foothills

Landslide susceptibility near highways is increased by 1 order of magnitude in the Andes of southern Ecuador, Loja province

Direct and plant‐mediated effects of climate on bird diversity in tropical mountains

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