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Diogo S. Martins
Instituto Superior de Agronomia
PrecipitationEconomicsEvapotranspirationHydrologyClimatology
13Publications
7H-index
150Citations
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Publications 13
Newest
#1Paula Paredes (IPN: Instituto Politécnico Nacional)H-Index: 19
#2Diogo S. Martins (Instituto Superior de Agronomia)H-Index: 7
Last. Carlos Pires (University of Lisbon)H-Index: 10
view all 5 authors...
Abstract This study aims at assessing the accuracy of estimating daily grass reference evapotranspiration (PM-ETo) 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-ETo. With this propose, ETo computed from local observations of weather variables in 24 weather stations distributed across Continental Portugal...
2 CitationsSource
#1Abdelaaziz Merabti ('ENS Paris': École Normale Supérieure)H-Index: 2
#2Diogo S. Martins (University of Lisbon)H-Index: 7
Last. Luis S. Pereira (Instituto Superior de Agronomia)H-Index: 54
view all 4 authors...
Abstract Due to an oversight, Figure 1 image and Figure 4 caption were incorrectly captured in the original publication.
Source
#1Abdelaaziz Merabti ('ENS Paris': École Normale Supérieure)H-Index: 2
#2Diogo S. Martins (University of Lisbon)H-Index: 7
Last. Luis S. Pereira (University of Lisbon)H-Index: 54
view all 4 authors...
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...
4 CitationsSource
#1Abdelaaziz Merabti ('ENS Paris': École Normale Supérieure)H-Index: 2
#2Hind Meddi ('ENS Paris': École Normale Supérieure)H-Index: 10
Last. Luis S. Pereira (Instituto Superior de Agronomia)H-Index: 54
view all 4 authors...
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...
5 CitationsSource
#1Diogo S. Martins (Instituto Superior de Agronomia)H-Index: 7
#2Paula Paredes (Instituto Superior de Agronomia)H-Index: 19
Last. Luis S. Pereira (University of Lisbon)H-Index: 54
view all 6 authors...
Computing crop reference evapotranspiration (ETo) with the FAO Penman–Monteith method (PM-ETo) requires maximum and minimum air temperature, shortwave radiation, relative air humidity and wind speed. These data are often not available, thus requiring alternative computation procedures. Although some proposed approximations may provide ETo values with small estimation errors, the physics of the ET processes may then not be well described. The use of reanalysis data, which is common in climate stu...
8 CitationsSource
#1Ana A. Paulo (IPN: Instituto Politécnico Nacional)H-Index: 12
#2Diogo S. Martins (University of Lisbon)H-Index: 7
Last. Luis S. Pereira (University of Lisbon)H-Index: 54
view all 3 authors...
Drought indices, such as the Standardized Precipitation Index (SPI) are used to quantify drought severity. Due to the SPI probabilistic and standardized nature, a given value of SPI computed in distinct time periods or locations indicates the same relative drought severity but corresponds to different amounts of precipitation. Thus, the present study aims at contributing for a comprehensive analysis of the influence of long-term precipitation variability on drought assessment by the SPI. Long re...
10 CitationsSource
#1Xiaodong Ren (Inner Mongolia Agricultural University)H-Index: 2
#2Zhongyi Qu (Inner Mongolia Agricultural University)H-Index: 8
Last. Luis S. Pereira (University of Lisbon)H-Index: 54
view all 5 authors...
When weather data sets available for computing the reference evapotranspiration are incomplete or of questionable quality, there is the need to replace the FAO Penman-Monteith (PM-ETo) method by approaches requiring reduced sets only, particularly maximum and minimum temperature. The Hargreaves-Samani (HS) equation and the PM-ETo using only temperature data (PMT) are considered in this study and their results are compared with those of the PM-ETo using full datasets. Daily data sets refer to the...
12 CitationsSource
#1Xiaodong Ren (Inner Mongolia Agricultural University)H-Index: 2
#2Diogo S. Martins (University of Lisbon)H-Index: 7
Last. Luis S. Pereira (University of Lisbon)H-Index: 54
view all 5 authors...
This study focuses on assessing trends of reference evapotranspiration (ETo) considering aridity. Weather data sets of 54–62 years of Inner Mongolia, a Chinese Province where climate varies from hyper-arid in the West to wet sub-humid in the East, were used. Trends were analyzed for ETo computed with the FAO Penman-Monteith method (PM-ETo) using full data sets of maximum and minimum temperature (Tmax and Tmin), sunshine duration (SD) used to compute net radiation, relative humidity (RH) and wind...
6 CitationsSource
#1Tayeb Raziei (University of Lisbon)H-Index: 13
#2Diogo S. Martins (University of Lisbon)H-Index: 7
Last. Alfonso Sutera (Sapienza University of Rome)H-Index: 23
view all 7 authors...
Regional drought modes in Portugal are identified applying the Principal Component Analysis (PCA) and Varimax rotation to the Standardized Precipitation Index (SPI) computed on various time scales using the three precipitation datasets covering the period 1950–2003: (i) The observation dataset composed of 193 rain-gauges distributed almost uniformly over the country, (ii) the PT02 high-resolution gridded dataset provided by the Portuguese Meteorological Institute, and (iii) the GPCC dataset with...
15 CitationsSource
POPOVA, Z., M. IVANOVA, L. PEREIRA , V. ALEXANDROV, M. KERCHEVA, K. DONEVA and D. MARTINS, 2015. Droughts and climate change in Bulgaria: assessing maize crop risk and irrigation requirements in relation to soil and climate region. Bulg. J. Agric. Sci., 21: 35–53 This study aims at assessing maize cropping risk due to observed trends for drought aggravation for the maize crop season which is associated with possible climate change trends relative to precipitation, temperature and reference evapo...
1 Citations
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