Noguera2020: FD identification based on Noguera et al. (2020)
In pedroalencar1/fdClassify2: Library of Flash Drought classificaition methods

1	Noguera2020(vtime, vprecipitation, vet0, threshold = NA)

`vtime`	data frame column or vector containing `date` data
`vprecipitation`	data frame column or vector containing daily precipitation
`vet0`	data frame column or vector containing daily ET0 (potential evapotranspiration). It can be obtained with the function (penman_day)} \item{threshold}{numeric, indicate the lower limit to identify a FD (see description)} } { The function returns a list with two data frames. One with weekly and detailed values from the function and a second with a summary of all events identified. } { The function uses the SPEI to identify a FD. The intentisication period is defined by a 4 week (one month) period with a SPEI reduction of 2. The SPEI value must go equal or below the threshold. If `threshold` is not provided -1.28 (10 }