greekenvironcovs: Environmental Covariates in Hellenic Waters 1964-2007

Description Usage Format Details Source Examples

Description

Annual commercial landings of anchovy, sardine and mackerel from Greek fisheries compiled by the Hellenic Statisitcal Authority.

Usage

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data(greekenvironcovs)

Format

Objects of class "data.frame". Columns are Year, air.degC, slp.millibars, sst.degC, vwnd.m/s, wspd3.m3/s3.

Details

The covariates are those in Stergiou and Christou except that NS winds might not be vertical wind. I used the ICOADS data not the COADSs. The boxes are 1 degree but on 1 degree centers not 0.5 centers. Thus box is 39.5-40.5 not 39-40.

The code to download the data “' library(RCurl) library(XML) library(stringr) lat <- c(39,39,40) lon <- c(24,25,25) covs <- list() for(i in 1:3) loc <- paste0("[(",lat[i],".5):1:(",lat[i],".5)][(",lon[i],".5):1:(",lon[i],".5)]") url <- paste0("https://coastwatch.pfeg.noaa.gov/erddap/griddap/esrlIcoads1ge.htmlTable?air[(1964-01-01):1:(2018-08-01T00:00:00Z)]",loc,",slp[(1964-01-01):1:(2018-08-01T00:00:00Z)]",loc,",sst[(1964-01-01):1:(2018-08-01T00:00:00Z)]",loc,",vwnd[(1964-01-01):1:(2018-08-01T00:00:00Z)]",loc,",wspd3[(1964-01-01):1:(2018-08-01T00:00:00Z)]",loc) doc <- getURL(url) cov <- readHTMLTable(doc, which=2, stringsAsFactors=FALSE) coln <- paste0(colnames(cov),".",cov[1,]) coln <- str_replace(coln, "\n", "") coln <- str_replace_all(coln, "[*]", "") cov <- cov[-1,] colnames(cov) <- coln cov[,1] <- as.Date(cov[,1]) for(j in 2:dim(cov)[2]) cov[,j] <- as.numeric(cov[,j]) covs[[i]] <- cov “'

This created a list with 3 data.frames for each of the 3 boxes used in Stergiou and Christou. These were then averaged together to create monthly and yearly means for the region. “' #Now create the monthly and yearly means. covsmean <- covs[[1]] for(j in 2:dim(cov)[2]) covsmean[,j] <- apply(cbind(covs[[1]][,j], covs[[2]][,j], covs[[3]][,j]),1,mean,na.rm=TRUE) covsmean <- covsmean[,c(-2,-3)] covsmean$Year <- as.factor(format(cov[,1]," covsmean.mon <- covsmean covsmean.year <- data.frame(Year=unique(covsmean$Year)) for(j in 2:(dim(covsmean)[2]-1)) covsmean.year <- cbind(covsmean.year, tapply(covsmean[,j], covsmean$Year, mean, na.rm=TRUE)) colnames(covsmean.year) <- c("Year",colnames(covsmean)[2:(dim(covsmean)[2]-1)]) covsmean.year$Year <- as.character(covsmean.year$Year) covsmean.mon$Year <- as.character(covsmean.mon$Year) “'

Source

NOAA ERDDAP ICOADS data

Examples

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data(greekenvironcovs)
library(corrplot)
cormat <- cor(ecovsmean.year)
corrplot(cormat)

Fish-Forecast/FishForecast documentation built on Aug. 22, 2019, 10:51 p.m.