Ricardo D. Rosa
University of Lisbon
12Publications
6H-index
369Citations
Publications 12
Newest
Published on Feb 1, 2016in Agricultural Water Management 3.18
Qingfeng Miao3
Estimated H-index: 3
(Inner Mongolia Agricultural University),
Ricardo D. Rosa6
Estimated H-index: 6
(University of Lisbon)
+ 5 AuthorsLuis S. Pereira50
Estimated H-index: 50
(University of Lisbon)
Intercropping is commonly used in the Hetao irrigation district, upper Yellow River basin, where the main crops are wheat, maize and sunflower. For a better use of land, water, radiation energy, and nutrients, spring wheat is traditionally intercropped with maize (W–M) and, more recently, with sunflower (W–S). Considering the need to reduce diversions of water for irrigation in Hetao, this study aims to assess crop water use of W–M and W–S intercropping systems in comparison to the same crops in...
17 Citations Source Cite
Published on Jan 1, 2013in Agricultural Water Management 3.18
Nana Zhao2
Estimated H-index: 2
,
Yu Liu10
Estimated H-index: 10
+ 3 AuthorsLuis S. Pereira50
Estimated H-index: 50
(Technical University of Lisbon)
The dual crop coefficient (Kc) approach to estimate crop evapotranspiration (ETc) separately considers soil evaporation (E) and plant transpiration (T) by computing a soil evaporation coefficient (Ke) and a basal crop coefficient (Kcb), respectively, with Kc=Ke+Kcb. This approach may be more precise than the single Kc approach particularly when the crops incompletely cover the ground. The SIMDualKc model, which is adopted in this study, is an irrigation scheduling simulation model that uses a da...
64 Citations Source Cite
Published on Nov 1, 2013in Irrigation Science 1.65
Baozhong Zhang1
Estimated H-index: 1
,
Yu Liu10
Estimated H-index: 10
+ 6 AuthorsLuis S. Pereira50
Estimated H-index: 50
(Technical University of Lisbon)
An accurate estimation of crop evapotranspiration (ET c) is very useful for appropriate water management; hence, an accurate and user-friendly model is needed to support related irrigation decisions. In this view, a study was developed aimed at estimating the ET c of winter wheat–summer maize crop sequence in the North China through eddy covariance measurements, to calibrate and validate the SIMDualKc model, to estimate the basal crop coefficients (K cb) for both crops and to partition ET c into...
52 Citations Source Cite
Published on Jan 1, 2012in Agricultural Water Management 3.18
Ricardo D. Rosa6
Estimated H-index: 6
(Technical University of Lisbon),
Paula Paredes18
Estimated H-index: 18
(Technical University of Lisbon)
+ 4 AuthorsRichard G. Allen46
Estimated H-index: 46
(University of Idaho)
Abstract This paper is the second of a two-part series, with the first part describing the SIMDualKc model, an irrigation scheduling simulation tool that employs the dual crop coefficient approach for calculating daily crop ET and then performs a water balance for a cropped soil. The model was applied, calibrated and validated for rainfed and basin irrigated maize (Coruche, Portugal), rainfed and surface irrigated wheat (Aleppo, Syria), and furrow irrigated cotton (Fergana, Central Asia). Result...
45 Citations Source Cite
Published on May 16, 2012in Natural Hazards and Earth System Sciences 2.28
Ana A. Paulo10
Estimated H-index: 10
(Technical University of Lisbon),
Ricardo D. Rosa6
Estimated H-index: 6
(Technical University of Lisbon),
Luis S. Pereira50
Estimated H-index: 50
(Technical University of Lisbon)
Abstract. Distinction between drought and aridity is crucial to understand water scarcity processes. Drought indices are used for drought identification and drought severity characterisation. The Standardised Precipitation Index (SPI) and the Palmer Drought Severity Index (PDSI) are the most known drought indices. In this study, they are compared with the modified PDSI for Mediterranean conditions (MedPDSI) and the Standardised Precipitation Evapotranspiration Index (SPEI). MedPDSI results from ...
97 Citations Source Cite
Published on Jan 1, 2012in Agricultural Water Management 3.18
Ricardo D. Rosa6
Estimated H-index: 6
(Technical University of Lisbon),
Paula Paredes18
Estimated H-index: 18
(Technical University of Lisbon)
+ 4 AuthorsRichard G. Allen46
Estimated H-index: 46
(University of Idaho)
Abstract Irrigation planning and scheduling require the availability of modeling tools that are accurate, quick and easy to use. The crop coefficient ( K c )-reference evapotranspiration (ET) method is a traditional method for estimating ET, but has become relatively complicated with the introduction of the dual K c procedure. The dual crop coefficient approach ( K cb + K e ) gives a better estimation of daily crop evapotranspiration because it separately considers soil evaporation and crop tran...
77 Citations Source Cite
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