Dissolved organic nutrients dominate melting surface ice of the Dark Zone (Greenland Ice Sheet)

Holland, Alexandra T.; Williamson, Christopher J.; Sgouridis, Fotis; Tedstone, Andrew J.; McCutcheon, Jenine; Cook, Joseph M.; Poniecka, Ewa; Yallop, Marian L.; Tranter, Martyn; Anesio, Alexandre M.; The Black & Bloom Group,

doi:https://doi.org/10.5194/bg-16-3283-2019

Articles | Volume 16, issue 16

https://doi.org/10.5194/bg-16-3283-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-16-3283-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 16

Research article

|

30 Aug 2019

Research article |

| 30 Aug 2019

Dissolved organic nutrients dominate melting surface ice of the Dark Zone (Greenland Ice Sheet)

Alexandra T. Holland, Christopher J. Williamson, Fotis Sgouridis, Andrew J. Tedstone, Jenine McCutcheon, Joseph M. Cook, Ewa Poniecka, Marian L. Yallop, Martyn Tranter, Alexandre M. Anesio, and The Black & Bloom Group

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Final revised paper (published on 30 Aug 2019)
Preprint (discussion started on 04 Apr 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review for Holland et al.', Anonymous Referee #1, 15 Apr 2019
- AC1: 'Author responses to Reviewer 1', Alexandra Holland, 15 Jul 2019
RC2: 'Review of Holland et al., "Nutrient cycling..."', Anonymous Referee #2, 29 Apr 2019
- AC2: 'Author responses to Reviewer 2', Alexandra Holland, 15 Jul 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Reconsider after major revisions (18 Jul 2019) by Tom J. Battin

AR by Alexandra Holland on behalf of the Authors (18 Jul 2019) Author's response Manuscript

ED: Publish as is (28 Jul 2019) by Tom J. Battin

Short summary

This paper provides a preliminary data set for dissolved nutrient abundance in the Dark Zone of the Greenland Ice Sheet. This 15-year marked darkening has since been attributed to glacier algae blooms, yet has not been accounted for in current melt rate models. We conclude that the dissolved organic phase dominates surface ice environments and that factors other than macronutrient limitation control the extent and magnitude of the glacier algae blooms.