Global Temperature

Column

Temperatures Worldwide, 1901?C2015

Column

Temperatures Worldwide

Annual average temperatures worldwide have changed since 1901.This graph uses the 1901?C2000 average as a baseline for depicting change. 2015 was the warmest year on record and 2006?C2015 was the warmest decade on record since thermometer-based observations began. Global average surface temperature has risen at an average rate of 0.15??F per decade since 1901.

Global Precipitation

Precipitation Worldwide, Year 1901 ~ 2015

Precipitation Worldwide

Precipitation can have wide-ranging effects on human well-being and ecosystems.Changes in precipitation can disrupt a wide range of natural processes, particularly if these changes occur more quickly than plant and animal species can adapt.

The total annual amount of precipitation over land worldwide has changed since 1901.Since 1901, global precipitation has increased at an average rate of 0.08 inches per decadeThis graph uses the 1901?C2000 average as a baseline for depicting change.

As average temperatures at the Earth??s surface rise more evaporation occurs, which, in turn, increases overall precipitation. Therefore, a warming climate is expected to increase precipitation in many areas. Just as precipitation patterns vary across the world, however, so do the precipitation effects of climate change.

Drought Conditions of U.S. Lands.

Average Drought Conditions in the Contiguous 48 States, 1895?C2015

Average Drought Conditions in the Contiguous 48 States, 1895?C2015

This chart shows annual values of the Palmer Drought Severity Index, averaged over the entire area of the contiguous 48 states

Average drought conditions across the nation have varied since records began in 1895. The 1930s and 1950s saw the most widespread droughts, while the last 50 years have generally been wetter than average

As average temperatures have risen because of climate change, the Earth??s water cycle has sped up through an increase in the rate of evaporation. An increase in evaporation makes more water available in the air for precipitation, but contributes to drying over some land areas, leaving less moisture in the soil. Thus, as the climate continues to change, many areas are likely to experience increased precipitationand increased risk of flooding , while areas located far from storm tracks are likely to experience less precipitation and increased risk of drought.

---
title: "ANLY 512: Lab2 - Data Exploration and Analysis Laboratory"
author: "Xiao Chen"
output: 
  flexdashboard::flex_dashboard:
    orientation: columns
    vertical_layout: fill
    source_code: embed
---

```{r setup, include=FALSE}
library(flexdashboard)
library(ggplot2)
```

Global Temperature
===========================================

Column {data-width=650}
-----------------------------------------------------------------------

### Temperatures Worldwide, 1901?C2015

```{r}
GlobalTemperature<-read.csv("https://www.epa.gov/sites/production/files/2016-08/temperature_fig-2.csv")
GlobalTemperature<-GlobalTemperature[-1:-6,]
names(GlobalTemperature)=c("Year","Earthsurface","UAH","RSS")
plot<-ggplot(data=GlobalTemperature,aes(x=GlobalTemperature$Year,y=as.numeric(GlobalTemperature$Earthsurface),group=1))+geom_line()+labs(x="Year",y="Earth Surface - Land and Ocean") + scale_x_discrete( breaks=c("1900", "1910","1920","1930","1940","1950","1960","1970","1980","1990","2000","2010","2015","2020")) +scale_y_continuous(breaks=c(-3,4,1)) + theme_bw()
plot
```

Column {data-width=350}
-----------------------------------------------------------------------

### Temperatures Worldwide

Annual average temperatures worldwide have changed since 1901.This graph uses the 1901?C2000 average as a baseline for depicting change. 2015 was the warmest year on record and 2006?C2015 was the warmest decade on record since thermometer-based observations began. Global average surface temperature has risen at an average rate of 0.15??F per decade since 1901.

Global Precipitation
===========================================

Precipitation Worldwide, Year 1901 ~ 2015

-----------------------------------------------------------------------

```{r}
GlobalPrecipitation<-read.csv("https://www.epa.gov/sites/production/files/2016-08/precipitation_fig-2.csv")
names(GlobalPrecipitation)=c("Year","Anomaly")
plot2<-ggplot(data=GlobalPrecipitation,aes(x=GlobalPrecipitation$Year,y=GlobalPrecipitation$Anomaly,group=1))+geom_line()+geom_point(color=4)+labs(x="Year",y="Anomaly(Inches)") + scale_x_discrete( breaks=c("1900", "1910","1920","1930","1940","1950","1960","1970","1980","1990","2000","2010")) +scale_y_discrete(breaks=c("-6","-4","-2","0","2","4","6")) + theme_bw()
plot2
```

### Precipitation Worldwide

Precipitation can have wide-ranging effects on human well-being and ecosystems.Changes in precipitation can disrupt a wide range of natural processes, particularly if these changes occur more quickly than plant and animal species can adapt.

The total annual amount of precipitation over land worldwide has changed since 1901.Since 1901, global precipitation has increased at an average rate of 0.08 inches per decadeThis graph uses the 1901?C2000 average as a baseline for depicting change.

As average temperatures at the Earth??s surface rise more evaporation occurs, which, in turn, increases overall precipitation. Therefore, a warming climate is expected to increase precipitation in many areas. Just as precipitation patterns vary across the world, however, so do the precipitation effects of climate change. 

Drought Conditions of U.S. Lands.
===========================================

Average Drought Conditions in the Contiguous 48 States, 1895?C2015

-----------------------------------------------------------------------
```{r}
USDrought<-read.csv("https://www.epa.gov/sites/production/files/2016-08/drought_fig-1.csv")
USDrought<-USDrought[-1:-6,]
names(USDrought)=c("Year","Annualavg","9yravg")
plot3<-ggplot(data=USDrought,aes(x=USDrought$Year,y=USDrought$Annualavg,group=1))+geom_line(color=1)+geom_point(color=2)+labs(x="Year",y="Annual Average") + scale_x_discrete( breaks=c("1890","1900", "1910","1920","1930","1940","1950","1960","1970","1980","1990","2000","2010")) +scale_y_discrete(breaks=c("-8","-6","-4","-2","0","2","4","6","8")) + theme_bw()
plot3
```

### Average Drought Conditions in the Contiguous 48 States, 1895?C2015

This chart shows annual values of the Palmer Drought Severity Index, averaged over the entire area of the contiguous 48 states

Average drought conditions across the nation have varied since records began in 1895. The 1930s and 1950s saw the most widespread droughts, while the last 50 years have generally been wetter than average 

As average temperatures have risen because of climate change, the Earth??s water cycle has sped up through an increase in the rate of evaporation. An increase in evaporation makes more water available in the air for precipitation, but contributes to drying over some land areas, leaving less moisture in the soil. Thus, as the climate continues to change, many areas are likely to experience increased precipitationand increased risk of flooding , while areas located far from storm tracks are likely to experience less precipitation and increased risk of drought.