Carbon Footprint
What does LCA stand for?
Life Cycle Assessment
What does VLCA stand for?
Virtual Life Cycle Assessment
This case study is similar to what other website assessor
Hubspot
Author of the reading
Tim Frick
The chemical names for the two greenhouse gases
CO2 & CH4
The two greenhouse gases that account for carbon footprint
Carbon Dioxide & Methane
Mobile data, with its reliance on 3G/4G, is up to this many times more polluting
5
Two out of the four factors for scoring within EcoGrader
Green Hosting, Page Optimization, Searchability, Design & UX
The owner of the example portfolio that does not use a domain name from GoDaddy
Generous Yeh
A 2008 paper from this laboratory suggests it takes 13 kWh to transmit 1 GB
Lawrence Berkeley National Laboratory
Driving, waste, laundry...
Multiply 13 kWh by 1.2 pounds, we get 15.6 pounds of CO2e, to transfer this many GB of data
1
2.23%
This person offered some thoughts on the VLCA’s usefulness in estimating the footprint of a digital product or service
Pete Markiewicz
Number of points for sites that utilize providers with renewable energy credits and sites that utilize providers with onsite renewable energy, respectively.
15 and 25 points
Analysis using the LCA includes computing the energy footprint of the site, its external resources, and...
Sum it over the expected lifetime of the site.
Defining the environmental impact of any online product or service is dependent on three things
Storage and Transmission
Electricity Transmission
End-point Use
The three sub-criteria under "Page Optimization"
HTTP Requests, Google PageSpeed, and Shared Resources
Computing carbon footprints in a hardcore faction requires considering the local site’s energy use—along with the energy use by external features needed to keep the site going, or “this”
Externalities
This EcoGrader factor contributes most to the overall assessment
Green Hosting
Any three Life Cycle Assessments to Virtual Properties
Materials - Software and visual assets
Manufacturing - Design and development
Packaging - Uploaded to the Internet
Distribution - Downloaded through the network
Usage - Interaction, user experience, completing tasks
Disposal - Data erased from client
The formula for estimating digital carbon footprint
Kilowatt hours per megabyte of data sent multiplied by the carbon intensity of the prevailing source that provided the power
The three requirements for a site to be optimized for mobile
min/max-width, @media, and separate style.css file for mobile view
GWP100 stands for
100-year Global Warming Potential
This host hosted 37 seasons of Jeopardy
Alex Trebek