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"The length of the drill barrel determines the maximum length of a core sample [...].

Collection of a long core record [...] requires many cycles of lowering a drill assembly, cutting a core 4–6 m in length, raising the assembly to the surface, emptying the core barrel, and preparing another assembly for drilling." "Boring ice to depths in excess of about 300 meters requires a fluid with a density closely matched to that of ice to prevent lithostatic pressure from causing plastic collapse of the borehole; the latter frequently results in loss of the drilling equipment.

One explanation he proposed was that the Earth’s atmosphere might provide an insulating effect, retaining some of the heat that would otherwise be reemitted into space.

Fourier’s proposal is considered the earliest hypothesis tied to the greenhouse effect.

Dedicated at the National Oceanic and Atmospheric Administration's Mauna Loa Observatory on April 30, 2015, and Scripps Institution of Oceanography at the University of California, San Diego, on June 12, 2015.

In 1965, however, data from Mariner 4, the first spacecraft to fly past Mars, indicated that the permanent caps were made of frozen carbon dioxide, an interpretation the Mariner 6 and 7 flybys (1969) and the Mariner 9 orbiter (1971-1972) did little to contradict.

23 March 2016 Save the Dates (2016 NICL CPL, CPL Staffing, 2016 Science Meeting) Read More → 07 December 20/16 field season for the South Pole ice core is now underway Read More → 26 March 2015 Going deep – Drilling project to retrieve longest ice core ever from South Pole. The SCO will provide a letter for inclusion with the proposals, assessing whether the ice core request is consistent with the South Pole ice core operation plan.

investigators submitting proposals requiring ice from the South Pole ice core should contact the South Pole ice core Science Coordination Office (SCO) prior to submitting.

In the late 1970s, the Viking orbiters revealed that the northern permanent cap is made of water ice.

Confirmation that Mars's southern permanent cap is also made of frozen water had to wait, however, until 2003, when new data from the Mars Global Surveyor and Mars Odyssey orbiters became available.

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