STEM Professionals Blog - GLOBE International STEM Network

Observations of daily precipitation have been a part of GLOBE from the beginning. At the start, GLOBE’s participation model was that schools would take measurement following all of the original 17 protocols. Atmosphere temperature, precipitation, cloud, and soil moisture measurements were to be collected daily at a site easily accessible to the school. A permanent installation of an instrument shelter containing a max/min thermometer mounted to a post along with a rain gauge was the expected norm with other measurements taken nearby. Daily temperature and precipitation measurements were to...

From the start, the measurement of daily maximum and minimum air temperature within one hour of local solar noon has been a key GLOBE protocol. The low cost approach was to use a U-tube thermometer housed in a wooden instrument shelter facing away from the equator. The U-shaped tube contained mercury with pins on either side of the mercury. As the air temperature warmed the pin on one side would move while the other pin stayed in place; when the air cooled, the pin on the other side would be pushed up. The pins were held in place by magnetized strips behind the thermometer tube so that they...

Quaking aspens can grow in a wide range of environmental conditions. They can tolerate a wide variety of variations in climate and environmental conditions including slope, moisture, surrounding vegetation, and soil (https://www.fs.fed.us/wildflowers/beauty/aspen/ecology.shtml). I found this information with a simple web search. But, before there was access to infinite articles, websites, and papers all a click away, scientists had to figure out growth trends using data. So, before I decided to do a web search about the environmental conditions of aspen habitats (my memorized aspen facts...

I recently had the pleasure of meeting a GLOBE student named Aspen. I was excited because my favorite type of tree is Aspen (Quaking Aspen to be more specific, Populus tremuloides to be even more specific), and I was able to tell her some of the fun facts about her namesake. My favorite thing about aspens is their bark. The white powder on it can act as sunscreen. It’s only about an SPF of 5 but it’s still pretty cool. The bark also contains chloroplasts which means it can photosynthesize, making it one of the few deciduous trees that do not solely rely on leaves for photosynthesis. They...

In my previous blog post, I showed the results of my surface temperature experiment. It was a great way to highlight some of the practical ways to use science, and it was yet another way for me to talk about my puppy. My experiment and accompanying blog was straightforward enough. I identified a problem, I designed an experiment, collected data, and presented the results. This is how science is done, right?! With years of experiment experience behind me, this should have been a very fast and easy task, but I had one problem that I forgot to account for, my Attention Deficit Disorder. ...

These are the results from my surface temperature experiment that I discussed in my previous blog post (same title, part 1). Results and Conclusion: Figure 2: Graph of average surface temperatures of the three surfaces over three days including air temperature data lines. My results show that my hypothesis was half right (remember, it’s ok if your data results do not match your hypothesis!). During the day, asphalt was the hottest, concrete was in the middle, and grass was the coolest. The surface temperatures of all three dropped at night, however, I was incorrect about asphalt...

In case you missed it, last month, was all about the 2017 International Virtual Science Symposium. There were over 140 entries from all 6 GLOBE regions. Students submitted reports about their research on all of the “spheres” (hydrosphere, atmosphere, biosphere, pedosphere, and earth as a system) and they were reviewed by a panel of scientists, teachers, and science enthusiasts to be rewarded with stars and badges. I had the wonderful privilege of being able to read through and review several projects. I was blown away with the thought and hard work that went into these projects. Of...

As Earth science has a single uncontrolled object of study, the first rule is to take today’s data today. While ice and sediment cores and fossils can reveal past conditions, the observations that can be made right now cannot be replaced by ones taken later. This goes well with the Native American adage, “You can’t step in the same river twice.” The environment is constantly changing and doing so on a wide range of time and space scales. In a recent video post, Neil deGrasse Tyson said, “One of the great things about science is that it is an entire exercise finding what is true. You have...

In the fall of 2016, the students in my Weather and Climate class, GEPL 4490/5490, at the University of Toledo developed projects based on El Nino. The students in class were give the task to look at GLOBE data from a part of the world in which El Nino has an effect. The students were also tasked to do research on El Nino and La Nina to see what it is.   The students looked at the following locations: Taiwan 2015 – Nicole Jablonski, Bailey Hafner, Cortnee Halpin Japan 1998 – Sean Smith, Australia 1998 – Madhusanka Jayawardhana, Josh Coll, and Justin Maluchnik As you can see in...

Consider the rain gauge used in GLOBE, CoCoRaHS, and other citizen science programs. Just four pieces plus 2 mounting screws – an inner graduated cylinder, an outer cylinder, a cap/funnel, and a mounting bracket. The area of the outer tube is exactly 10 times the areas of the inner tube and the cap/funnel, so the graduations on the inner cylinder can be spaced ten times further apart. Thus, 0.2 mm of rain fills the inner tube to a depth of 2.0 mm, which one can read. In addition, if heavy rainfall fills the inner cylinder, the rest of the rainfall overflows into the outer cylinder, which...