Archive for the ‘CoCoRaHS’ tag

It’s Raining Cats and Dogs and CoCoRaHS Wants to Know Where and How Many Fell

By March 11th, 2017 at 9:31 am | Comment

You may have noticed some strange weather recently where you live. For example, in February, it reached 100o in Mangum, Oklahoma when 56o is the average. For the first time ever, temperatures in Antartica rose to the high 60s. And when was the last time you saw a headline reading Hawaii Has Had More Snow than Chicago or Denver in 2017? Some may link these strange events to a changing climate, and although climate influences weather patterns, it’s important to make a distinction between the two to fully understand the impacts of global climate change.

Neil Degrasse Tyson communicates this distinction with an analogy of a man walking his dog, and another common analogy states: “weather influences what clothes you wear on a given day, while the climate where you live influences the entire wardrobe you buy.” Read the rest of this entry »

Join Hundreds of Schools Around the Country in Contributing Data During CoCoRaHS Rain Gauge Week!

By September 14th, 2015 at 2:21 pm | Comment

CoCoRaHS rain gauge

Source: CoCoRaHS

The Community Collaborative Rain, Hail, and Snow Network (CoCoRaHS) is a unique, non-profit, community-based network of volunteers of all ages who measure and report precipitation using rain gauges that anyone can get and install. The data according to CoCoRaHS are used by the National Weather Service, meteorologists, hydrologists, emergency managers, city utilities, insurance adjusters, the U.S. Department of Agriculture, engineers, mosquito control, ranchers and farmers, outdoor and recreation interests, teachers, students, and neighbors in the community. Read more about how CoCoRaHS can be implemented in high school classrooms in SciStarter’s Citizen Science in the Classroom series blog post. CoCoRaHS is one of the citizen science projects showcased in our back to school newsletter. Want to know what the others are? Find out now!

Read the rest of this entry »

Any Old Photo: The Field Photo Library Project

By February 9th, 2014 at 3:52 pm | Comment

The Field Photo Library project helps scientists document changes in landscape by sharing crowdsourced and archived field photos from all over the world.

Find more citizen science projects for all five senses on SciStarter.

Field Photo

They say a picture is worth a thousand words, but what value does “any old geo-tagged photo” hold for a scientist? Field Photo Library (official site) is an app that captures images. It is also a partner project of CoCoRaHS, a project that crowdsources weather data to meteorologists to measure rain, hail, and snow. Nolan Doesken, the state climatologist for Colorado at the Colorado Climate Center at Colorado State University says, “It is a fun collaborative effort with many potential applications—drought, inter-annual variability, growing season and phenology, land use change, and, over much longer periods of time, climate change. But it will require establishing a baseline and growing the photo archive from there.”

The project encapsulates the meaning of crowdsourced data collection as well as just how broadly  images captured with an iPhone app be used. The University of Oklahoma website which offers a link to the app says, “Every day, researchers, students and citizens use GPS cameras and smartphones to take photos in the field as part of their efforts to document their observations of landscapes, agriculture, forests, natural disasters, and wildlife.”

It would seem intuitive that a landscape photo can tell scientists about land use change over time, and about a sudden catastrophe such as a tornado where there exists a very clear ‘before’ and ‘after,’ but what can a field photo tell a researcher about wildlife for example? In part, the answer to that is ‘ground-truth.’ Mark Shafer, the Director of the Southern Climate Impacts Planning Program and an Associate Professor at the University of Oklahoma agreed that a landscape photograph can assist his biology colleagues when they match research findings to actual landscape photographs, for example as part of a comparative habitat study between wet and dry years.

Having everyone taking pictures at approximately the same time allows us to see a landscape as it relates to the things we measure—how it corresponds to the amount of rain that has fallen, or if it looks like something we might expect according to US Drought Monitor. It seems the real benefit now, is to be able to answer questions such as, “Is the land around you as green as the satellite seems to say?”

Shafer says, “We see a lot of data, but there was no consistent baseline. So that was one of the reasons for starting this project—to create a baseline for drought monitoring, and for seasonal changes.”

With Santa Barbara currently experiencing a drought, I scooped up my phone, downloaded the app, and headed out to test-drive Field Photo. This PDF explains how to position yourself in your landscape of choice, which is what I did, before capturing a series of images of a nearby valley. And that was that—done and dusted. All I had to do was email the photos in. Instructions for submitting images are provided on this page.

Until now, the app has only been used by a local Oklahoma audience, often as part of an organized Field Photo Weekend, but as Doesken says, “It is now ready to be promoted to a much wider public audience.” Shafer says it would be remarkable if it went global, but for now they are hosting another Field Photo Weekend that will coincide with Presidents Day on February 15. “It would be wonderful if all 19,000 Community Collaborative Rain, Hail and Snow volunteers took a photo for the database this weekend!”

More about Field Photo Weekend:

Submitted images will appear here:

Download the app:

Email photos to

Image: Courtesy of Ian Vorster, looking west across a drought-stricken grassland/open shrubland landscape from a vantage point on the western edge of Santa Barbara, California.

Ian Vorster has a MS in Environmental Communications and most recently served as director of communications at the Woods Hole Research Center in Massachusetts. Prior to that he worked in the health communications field. Ian has served as a designer, writer, photographer, editor and project leader in the field of science, and now works freelance in a blend of these roles.

Citizen Science: the Animated Movie

By October 12th, 2011 at 1:33 pm | Comment


There should be more animated movies about citizen science, don’t you think? Thankfully, the people at a weather-focused citizen science project called the Community Collaborative Rain, Hail and Snow Network (known by the funny acronym CoCoRaHS) have made this video! It tells the story of how the project started and explains how people all over the country are getting involved. Watch and find out how you can become a CoCoRaHS volunteer too!