This visualization shows daily surface air temperatures across multiple years, with each year rendered as a colored line and the current year (2024) highlighted in red with greater opacity and stroke width. The chart uses a time-scaled x-axis for day of year and a linear y-axis for temperature, with a sequential turbo color scale encoding the year value. Built with D3, the code employs `scaleTime`, `scaleLinear`, `scaleSequential`, `flatGroup`, `line`, and `extent` to generate the multi-line plot from the daily surface air temperature dataset. A responsive axis library handles the axes and resizing behavior.