Scripps Institute of Oceanography
(UC San Diego) Keeling Curve of Northern Hemisphere CO2 Levels.
This page has many links to authoritative graphs and data on Northern Hemisphere
atmospheric CO2 concentrations
Data on Northern Hemisphere Atmospheric CO2 concentration
from 1958 through the present presented in a comma-separated form useful for
pasting into spreadsheets. This is also human-readable. Includes
information for citation in academic papers.
Missing data points are indicated as concentrations of -99.99.
[US] National Snow and Ice Data Center
NSIDC is part of the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado at Boulder. The University and CIRES provide a collaborative environment and support for our research.
NSIDC's research and scientific data management activities are supported by NASA, the National Science Foundation (NSF), the National Oceanic and Atmospheric Administration (NOAA), and other federal agencies, through competitive grants and contracts.
Interactive Sea Ice Graph Updated daily, when possible.
This interactive graph allows you to see Arctic Sea Ice Extent data for individual years selected by you and/or Decade averages, along with the +- 2 Standard Deviation limits. A really nice display. Only works in Browsers that support HTML5 (Internet Explorer 7+, Safari, Firefox, Chrome).
Arctic Temperatures
From "DMI" Danmarks Meteorologiske Institut
An interactive chart of daily mean temperature for the portion of the arctic North of 80 Latitude from 1958 - 2013. You can select an individual year and have the temperature for each day of that year and average temperature from 1958 - 2013 displayed as a graph.
