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Luis S. Pereira
Instituto Superior de Agronomia
333Publications
51H-index
8,366Citations
Publications 333
Newest
Published on Apr 1, 2019in Agricultural Water Management 3.18
Paula Paredes18
Estimated H-index: 18
(Instituto Superior de Agronomia),
Luis S. Pereira51
Estimated H-index: 51
(Instituto Superior de Agronomia)
Abstract The computation of the reference crop evapotranspiration (ET o ) using the FAO Penman-Monteith equation (PM-ET o ) requires data on maximum and minimum air temperatures (T max , T min ), vapour pressure deficit (VPD), solar radiation (R s ) and wind speed at 2 m height (u 2 ). However, those data are often not available, or data sets may be incomplete or have questionable quality. Various procedures were proposed in FAO56 to overcome these limitations and an abundant literature has been...
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Published on Feb 6, 2019in Sri Lankan Journal of Anaesthesiology
Ana Luísa Afonso , Luis S. Pereira51
Estimated H-index: 51
+ 6 AuthorsRui Valente
Background: Ultrasound (US)-guided transversus abdominis plane block (TAPB) provides postoperative analgesic efficacy in abdominal surgery, however evidence of its efficacy in reconstructive breast surgery with transversus rectus abdominis myocutaneous (TRAM) flap is still limited. Our main objective was to assess effectiveness of TAPB in this surgery. Methods: Observational retrospective study conducted in patients undergoing unilateral breast reconstruction with TRAM (surgery 1) and mastectomy...
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Published on Feb 22, 2019in Water 2.07
T.A. Paço11
Estimated H-index: 11
,
Paula Paredes18
Estimated H-index: 18
+ 2 AuthorsFrancisco L. Santos11
Estimated H-index: 11
The SIMDualKc model was used to simulate crop water requirements for a super high density olive orchard in the region of Alentejo, Portugal. This model uses the dual crop coefficient approach to estimate and partitioning the actual crop evapotranspiration (ETc act) and therefore to perform the soil water balance. The model was calibrated with 2011 tree transpiration using trunk sap flow measurements and was validated using similar data from 2012 and tested with 2013 data. Low root mean square er...
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Published on Jan 1, 2018in Agricultural Water Management 3.18
Paula Paredes18
Estimated H-index: 18
(Instituto Superior de Agronomia),
Daniela D’Agostino3
Estimated H-index: 3
+ 2 AuthorsLuis S. Pereira51
Estimated H-index: 51
(Instituto Superior de Agronomia)
Abstract Two years of experimental field data on potato (var. Spunta) were used to calibrate and validate the SIMDualKc model. This model adopts the FAO dual K c approach that provides the partition of crop evapotranspiration into crop transpiration and soil evaporation. Results of model calibration show a good agreement between soil water observations and predictions, with low errors of estimate – RMSE 0.87). The calibrated basal crop coefficients for the initial stage, mid-season and end of se...
5 Citations Source Cite
Published on Nov 1, 2018in Agricultural Water Management 3.18
Paula Paredes18
Estimated H-index: 18
(Instituto Politécnico Nacional),
Diogo S. Martins6
Estimated H-index: 6
(Instituto Superior de Agronomia)
+ 2 AuthorsCarlos Pires10
Estimated H-index: 10
(University of Lisbon)
Abstract This study aims at assessing the accuracy of estimating daily grass reference evapotranspiration (PM-ET o ) computed with ERA-Interim reanalysis products, as well as to assess the quality of reanalysis products as predictors of daily maximum and minimum temperature, net radiation, dew point temperature and wind speed, which are used to compute PM-ET o . With this propose, ET o computed from local observations of weather variables in 24 weather stations distributed across Continental Por...
1 Citations Source Cite
Published on Nov 1, 2018in Theoretical and Applied Climatology 2.32
Paula Paredes18
Estimated H-index: 18
(University of Lisbon),
J. C. Fontes4
Estimated H-index: 4
(University of the Azores)
+ 1 AuthorsLuis S. Pereira51
Estimated H-index: 51
(University of Lisbon)
Reference crop evapotranspiration (ETo) estimations using the FAO Penman-Monteith equation (PM-ETo) require a set of weather data including maximum and minimum air temperatures (T max, T min), actual vapor pressure (e a), solar radiation (R s), and wind speed (u 2). However, those data are often not available, or data sets are incomplete due to missing values. A set of procedures were proposed in FAO56 (Allen et al. 1998) to overcome these limitations, and which accuracy for estimating daily ETo...
4 Citations Source Cite
Published on Feb 1, 2018in Water Resources Management 2.64
Abdelaaziz Merabti2
Estimated H-index: 2
(École Normale Supérieure),
Diogo S. Martins6
Estimated H-index: 6
(University of Lisbon)
+ 1 AuthorsLuis S. Pereira51
Estimated H-index: 51
(University of Lisbon)
The spatial and temporal variability of droughts were studied for the Northeast Algeria using SPI and RDI computed with monthly precipitation data from 123 rainfall stations and CFSR reanalysis monthly temperature data covering the period 1979–80 to 2013–14. The gridded temperature data was interpolated to all the locations having precipitation data, thus providing to compute SPI and RDI with the time scales of 3-, 6- and 12-month with the same observed rainfall data. Spatial and temporal patter...
3 Citations Source Cite
Published on Oct 1, 2018in Theoretical and Applied Climatology 2.32
Paula Paredes18
Estimated H-index: 18
(University of Lisbon),
J. C. Fontes4
Estimated H-index: 4
(University of the Azores)
+ 1 AuthorsLuis S. Pereira51
Estimated H-index: 51
(University of Lisbon)
Reference crop evapotranspiration (ETo) estimations using the FAO Penman-Monteith equation (PM-ETo) require several weather variables that are often not available. Then, ETo may be computed with procedures proposed in FAO56, either using the PM-ETo equation with temperature estimates of actual vapor pressure (e a) and solar radiation (R s), and default wind speed values (u 2), the PMT method, or using the Hargreaves-Samani equation (HS). The accuracy of estimates of daily e a, R s, and u 2 is pr...
5 Citations Source Cite
Published on Feb 1, 2018in Water Resources Management 2.64
Abdelaaziz Merabti2
Estimated H-index: 2
(École Normale Supérieure),
Hind Meddi10
Estimated H-index: 10
(École Normale Supérieure)
+ 1 AuthorsLuis S. Pereira51
Estimated H-index: 51
(Instituto Superior de Agronomia)
Drought and wetness events were studied in the Northeast Algeria with SPI and RDI. The study area includes a variety of climatic conditions, ranging from humid in the North, close to the Mediterranean Sea, to arid in the South, near the Sahara Desert. SPI only uses precipitation data while RDI uses a ratio between precipitation and potential evapotranspiration (PET). The latter was computed with the Thornthwaite equation, thus using temperature data only. Monthly precipitation data were obtained...
3 Citations Source Cite
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