Flash floods seem to be increasing in many areas. This post will show how to download local USGS flow and precipitation data and generate a 3-panel chart of flow, gage height and precipitation. There was a tragic flash flood incident … Continue reading →

There is ample evidence of global climate change, these are just a few examples  (here, here, here). While global indicators are important to focus attention on the problem and solutions, local data is important to help us understand the situation … Continue reading →

The weatherData package, link , makes it very easy to retrieve detailed weather data from hundreds of stations across the US. I developed this script to retrieve and plot daily maximum and minimum temperatures and highlight days with 90+ max … Continue reading →

Open Mind, a climate trend data analysis blog, has a great Climate Data Service that provides  updated consolidated csv file with 170 monthly climate time series. This is a great resource for those interested in studying climate change. Quick, reliable … Continue reading →

Precipitation Data Quality Concerns I am interested in evaluating potential changes in precipitation patterns caused by climate change. I have been working with daily precipitation data for the Philadelphia International Airport, site id KPHL, for the period 1950 to present … Continue reading →

Plotting cumulative day-of-year precipitation can helpful in assessing how the current year’s rainfall compares with long term averages. This plot shows the cumulative rainfall by day-of-year for Philadelphia International Airports rain gauge. The source data was downloaded from the Pa … Continue reading →

This blog focuses on how to use R to study climate data. I will be using readily available public  climate data and R to understand global warming and climate trends. These charts show the types of that I will be … Continue reading →

NOAA has released their December, 2014 global anomaly data, allowing us to examine the 1880 – 2014 global temperature anomaly trend. This R script trend charts shows the annual and average decadal temperature anomalies for the NOAA data series.   … Continue reading →

NASA’s Goddard Institute for Space Studies (GISS)  has released their December, 2014 anomaly data, showing that 2014 was the warmest year in the warmest decade in the 1880 – 2014 instrumental temperature record period. NASA’s results are consistent with the … Continue reading →

In this post I compare GISS LOTAs during 5 El Nino – La Nina cycles (2010, 1998, 19883, 1973 and 1970). El Nino – La Nina Cycles In a previous post I showed the Nino 34 SSTA cycles for 2010, … Continue reading →

I am pleased to announce my CTS.csv file which includes 18 climate monthly time series in one easy to access csv file. This is part of  my goal of having a user friendly way for do-it-yourself citizen climate scientists to … Continue reading →

In previous posts I have shown plots of global temperature anomaly, volcano and Nino34 trends (here , here). In this post , I want to further  explore the role of volcanic eruptions and Nino34 phases (El Nino, La Nina) on … Continue reading →