My Earth Science Data Portfolio
Earth Data Analytics Certificate Course 2024
Documenting my Learning Adventure
This adventure made possible through the University of Colorado Boulder and the Environmental Data Science Innovation and Inclusion Lab
Contact Information
I have been the Project Coordinator for the Smoky Mountain STEM Collaborative {SMSC} at SCC since 2018. SMSC is part of NASA’s SciAct community. Southwestern is the nation’s only community college to have a collaborative partnership with NASA which started in 2015. My background is in science education with 16 years experience teaching High School and I have an M.S. in Biology with many years teaching at the college level. In addition, I also worked as the assistant director for Western Carolina University’s Upward bound Math & Science program in the 1990s. My passions are inspiring young people to answer their own questions and supporting those who live and work in western North Carolina.
My Projects for the Earth Data Analytics Professional Graduate Certificate
Adding a Map - we learned to:
- Define geospatial vector data
- Search for geospatial features
- Construct a map and embed it into a portfolio website
SMSC is located at Southwestern Community College shown in the map below.
The land where SCC is located is the ancestral home of the Eastern Band of the Cherokee Indians in the mountains of western North Carolina and not far from the Qualla Boundary where the Cherokee People reside. This is my home too and I hope to foster stewardship of this land through data. Creating an interactive map using Open Street Map was our first assignment.
Climate Coding Challenge - we learned to:
- Analyze temperature data over time
- Parse date information so that it is represented as a datetime type
- Use operators to convert to different units
- Resample time-series data to different frequencies
Our guided learning focused on Denver Colorado (elevation 5280ft) and then we selected a new location and used data from The Global Historical Climatology Network. Below is a comparison of temperature trends in North Carolina and Denver Colorado.
Here is my python code showing extraction and analysis of data from Coweeta Hydrologic Lab (elevation 2200-3800ft). I chose Coweeta because it is near where I live and work and has been collecting data for a long time. Note that it’s hard to compare the two trendlines because one is in degrees Fahrenheit and the other is in degrees Celsius. However, the slope on both plots show a gradual trend upward. If I weren’t trying to finish the rest of the assignments, I might run some additional statistics, but for now I’m thrilled I can share this part of my work especially since hurricane Helene caused the NOAA data center to be offline for a little while.
Mapping Migration - Species Distribution challenge - we learned to:
- Combine different types of vector data with spatial joins
- Create a chloropleth plot
This Interactive Map of Veery Migration was our guided learning exercise and then we picked another species to try on our own.
The Veery or Catharus fuscescens, is part of the Turdidae family. It is found in the southeastern US during migration and it may be able to anticipate hurricanes in the Atlantic according to a study by Christopher Heckscher. Unfortunately, Atlantic hurricanes tend to coincide with Veery migration and have a negative impact on their breeding season. This is an example of species that is studied in phenology - the impact of a changing climate on the cyclical pattern of an organisms life history.
Habitat Suitability Project - we learned to:
- Create a habitat suitability model.
- The model is based on combining multiple data layers related to soil, topography, and climate.
- I chose native Rivercane - Arundinaria gigantea - because restoration efforts are relevant locally
My work on this project can be viewed here. It is a work in progress which I plan to complete during the spring semester. Previously I worked with SCC student Stella Walborn using the TourIt platform from Infiniscope and a wealth of resources from regional groups to create a virtual tour of rivercane in WNC. You can find that here.
Sources:
- Open Street Map “Southwestern Community College - Jackson Campus (601443373), Sept. 2024 https://www.openstreetmap.org/way/601443373
- Heckscher, Christopher M. 2018. “A Nearctic-Neotropical Migratory Songbird’s Nesting Phenology and Clutch Size Are Predictors of Accumulated Cyclone Energy.” Scientific Reports 8 (1): 9899. https://doi.org/10.1038/s41598-018-28302-3.
- GBIF.org (27 October 2024) GBIF Occurrence Download https://doi.org/10.15468/dl.r463v3
Modeling Urban Asthma Rates
The learning goals for this project were:
- Access larger-than-memory data in chunks
- Compute fragmentation statistics
- Compare urban greenspace distribution to health outcomes
In urban areas, vegetation can help clean the air from traffic and other air pollutants although simple measurements such as NDVI (Normalized Difference Vegetation Index) which document vegetative health have shown mixed results. The relationship between metrics such as mean patch size, edge density, fragmentation and human health may help quantify the benefit of greenspaces in an urban environment. This project investigated that idea.
A comparison of asthma rates with the geographic distribution of healthy vegetation as determined by NDVI. Note that there are some correlation of areas with lots of vegetation (dark green) correspond to areas with low rates of asthma (purple) are identifiable in the side by side maps.
To test the strength of this correlation, a linear ordinary least squares (OLS) regression model was used and shows that access to greenspace can explain some of the geographic distribution of asthma, but other factors are involved.
Here is my python code for the model. Please note there are some data gaps due to changes made recently on the CDC website.
Land Classification Project
This project used an unsupervised K-means clustering algorithm to group land cover pixels by similar spectral signatures. The K-means algorithm helps to reveal patterns or clusters that have minimal within-cluster variation. This study used the harmonized Sentinal/Landsat multispectral dataset to look at patterns in vegetation data. The HUC region 6 watershed covers the drainage of the Tennessee River Basin from Kentucky to the Gulf of Mexico. Most of the Tuckasegee River basin, where I live, is within this region is forested.
The image above shows the location of Jackson County in North Carolina where the Tuckaseegee River originates.
Land Cover Interpretation based on Spectral Data
According to a publication by the North Carolina Department of Environmental Quality [1], the middle of the Tuckasegee River watershed shown in this analysis “…drains the west-central portion of Jackson County…[and] traditionally, land use in the watershed was agricultural with light residential and commercial activity along the transportation corridors”. In 2008, the NC Department of Mitigation Services designated Savannah Creek along with 18 other tributaries were identified for “…restoring wetland and stream functions such as maintaining and enhancing water quality, restoring hydrology, and improving fish and wildlife habitat.”[2].
