WRF downscaling improves ERA-Interim representation of precipitation around a tropical Andean valley during El Niño: implications for GCM-scale simulation of precipitation over complex terrain

Posada-Marín, José A.; Rendón, Angela M.; Salazar, Juan F.; Mejía, John F.; Villegas, Juan Camilo

doi:10.1007/s00382-018-4403-0

Cited by 43 publications

(45 citation statements)

References 71 publications

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“…This issue becomes an important point for the regional research agenda. Currently, several projects are exploring the use of RCMs at gamma-mesoscale resolution for climate projections in different regions of the Andes (Bozkurt et al, 2019;Posada-Marín et al, 2019).…”

Section: Regional Climate Downscalingmentioning

confidence: 99%

Observed and Projected Hydroclimate Changes in the Andes

et al. 2020

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The Andes is the most biodiverse region across the globe. In addition, some of the largest urban areas in South America are located within this region. Therefore, ecosystems and human population are affected by hydroclimate changes reported at global, regional and local scales. This paper summarizes progress of knowledge about long-term trends observed during the last two millennia over the entire Andes, with more detail for the period since the second half of the 20th century, and presents a synthesis of climate change projections by the end of the 21st century. In particular, this paper focuses on temperature, precipitation and surface runoff in the Andes. Changes in the Andean cryosphere are not included here since this particular topic is discussed in other paper in this Frontiers special issue, and elsewhere (e.g. IPCC, 2019b). While previous works have reviewed the hydroclimate of South America and particular sectors (i.e., Amazon and La Plata basins, the Altiplano, Northern South America, etc.) this review includes for the first time the entire Andes region, considering all latitudinal ranges: tropical (North of 27 • S), subtropical (27 • S−37 • S) and extratropical (South of 37 • S). This paper provides a comprehensive view of past and recent changes, as well as available climate change projections, over the entire Andean range. From this review, the main knowledge gaps are highlighted and urgent research necessities in order to provide more mechanistic understanding of hydroclimate changes in the Andes and more confident projections of its possible changes in association with global climate change. Keywords: hydroclimate of the Andes, global change in the Andes, hydroclimate trends in the Andes, hydroclimate projections of the Andes, climate change in the Andes, climate change scenarios for the Andes

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Section: Regional Climate Downscalingmentioning

confidence: 99%

Observed and Projected Hydroclimate Changes in the Andes

et al. 2020

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“…The conformity of both datasets was tested using a Pearson correlation test: correlation coefficient R ¼ 0.86 and P value , 0.01. Era-Interim data are calculated on a regional scale and might not fully reflect local precipitation patterns in mountainous areas (Gao et al 2013;Posada-Mar ın et al 2018). Combining these data with in situ measurements places local weather in a regional context, especially in regions with few meteorological observations (Peters 2016b).…”

Section: Data Analysis Of Climate Measurement Seriesmentioning

confidence: 99%

Encounters Between Experiences and Measurements: The Role of Local Knowledge in Climate Change Research

Kieslinger

Pohle

Buitrón

et al. 2019

Mountain Research and Development

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“…From an ensemble of simulations with WRF for Colombia (grid size 10 km) using different cumulus parameterizations, Posada‐Marín et al . () found that in general the model overestimates precipitation for a region within the tropical Andes.…”

Section: Introductionmentioning

confidence: 95%

Sea surface temperature‐related response of precipitation in northern South America according to a WRF multi‐decadal simulation

Martínez

Arias

Castro

et al. 2018

Intl Journal of Climatology

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Precipitation, low‐level flow and atmospheric moisture transport fields over the Intra‐Americas region from a Weather Research and Forecasting model (WRF) multi‐decadal simulation are presented. The period of analysis is 1982–2012, and the focus is on mean monthly states and their variability. WRF results are compared to global precipitation products and to the Interim Reanalysis from the ECWMF (ERA‐Interim). An analysis of the coupling between precipitation over northern South America and regional scale sea surface temperatures (SSTs) and winds within ERA‐Interim and WRF is also presented. Over land, precipitation biases in WRF are mostly positive, especially over Central America and northern South America. This bias is associated with an excess in atmospheric moisture convergence in WRF compared to ERA‐Interim, which in turn is related to stronger low‐level circulation structures and differences in the moisture transport field between WRF and ERA‐Interim at the regional scale. The largest differences in the flow are observed over the eastern Pacific, where the flow is correlated with precipitation over southern Mexico, Central America and northern South America during the boreal summer. During early winter, correlation patterns of WRF precipitation and SST anomalies over the tropical Pacific are substantially weaker over western Texas and northwestern South America compared to the coupling between the global precipitation products and observed SSTs. For northwestern South America, the low correlation seems to be associated to a lack of coupling between regional scale winds and SST anomalies. During the boreal summer, the coupling between Caribbean SSTs and precipitation over parts of Mexico and Central America is stronger in WRF compared to observation‐based products.

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WRF downscaling improves ERA-Interim representation of precipitation around a tropical Andean valley during El Niño: implications for GCM-scale simulation of precipitation over complex terrain

Cited by 43 publications

References 71 publications

Observed and Projected Hydroclimate Changes in the Andes

Observed and Projected Hydroclimate Changes in the Andes

Encounters Between Experiences and Measurements: The Role of Local Knowledge in Climate Change Research

Sea surface temperature‐related response of precipitation in northern South America according to a WRF multi‐decadal simulation

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