TABLE 7.

Mean (ng m^–2 h^–1 ± SE) OVOC emissions measured in three microbiological habitats on the southern Greenland ice sheet.

Compound	Red snow	Cryoconite hole	Ice surface	References
Unknown OVOC 1	n.d.	11 ± 7	42 ± 8
1H-indene-1,3(2h)-dione	n.d.	2 ± 1	12 ± 3
2-Ethylhexyl ester formic acid	8 ± 4	5 ± 3	8 ± 1
Unknown aldehyde 1	n.d.	2 ± 1	4 ± 1
Cyclohexanepropanol	n.d.	6 ± 2	n.d.
1-(1-Cyclohexen-1-yl)-ethanone	3 ± 1	n.d.	n.d.
Unknown OVOC 2	3 ± 3	n.d.	n.d.

n.d., not detected; OVOC, oxygen-containing VOC. When available, references are included for compounds that have previously been reported as algal, cyanobacterial, bacterial, or fungal VOCs.