@Article{ZeriACCCSUVJ:2018:ToCoAg,
author = "Zeri, Marcelo and Alval{\'a}, Regina C{\'e}lia S. and Carneiro,
Rog{\'e}rio and Cunha Zeri, Gisleine da Silva and Costa,
Jos{\'e} Maria and Spatafora, Luciana Rossato and Urbano,
Domingos and Vall-Llossera, Merc{\`e} and Jos{\'e}, Marengo",
affiliation = "{Centro Nacional de Monitoramento e Alertas de Desastres Naturais
(CEMADEN)} and {Centro Nacional de Monitoramento e Alertas de
Desastres Naturais (CEMADEN)} and {Centro Nacional de
Monitoramento e Alertas de Desastres Naturais (CEMADEN)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Centro
Nacional de Monitoramento e Alertas de Desastres Naturais
(CEMADEN)} and {Universitat Polit{\`e}cnica de Catalunya} and
{Centro Nacional de Monitoramento e Alertas de Desastres Naturais
(CEMADEN)} and {Universitat Polit{\`e}cnica de Catalunya} and
{Centro Nacional de Monitoramento e Alertas de Desastres Naturais
(CEMADEN)}",
title = "Tools for communicating agricultural drought over the Brazilian
Semiarid using the soil moisture index",
journal = "Water (Switzerland)",
year = "2018",
volume = "10",
number = "10",
pages = "e1421",
month = "Oct.",
keywords = "soil moisture, soil moisture index, drought, semiarid, relative
extractable water, available water fraction.",
abstract = "Soil moisture over the Brazilian semiarid region is presented in
different visualizations that highlight spatial, temporal and
short-term agricultural risk. The analysis used the Soil Moisture
Index (SMI), which is based on a normalization of soil moisture by
field capacity and wilting point. The index was used to
characterize the actual soil moisture conditions into categories
from severe drought to very wet. In addition, the temporal
evolution of SMI was implemented to visualize recent trends in
short-term drought and response to rainfall events at daily time
steps, as new data are available. Finally, a visualization of
drought risk was developed by considering a critical value of SMI
(assumed as 0.4), below which water stress is expected to be
triggered in plants. A novel index based on continuous exposure to
critical SMI was developed to help bring awareness of real time
risk of water stress over the region: the Index of Stress in
Agriculture (ISA). The index was tested during a drought over the
region and successfully identified locations under water stress
for periods of three days or more. The monitoring tools presented
here help to describe the real time conditions of drought over the
region using daily observations. The information from those tools
support decisions on agricultural management such as planting
dates, triggering of irrigation, or harvesting.",
doi = "10.3390/w10101421",
url = "http://dx.doi.org/10.3390/w10101421",
issn = "2073-4441",
language = "en",
targetfile = "zeri_tools.pdf",
urlaccessdate = "03 jun. 2024"
}