SMOW delta Deuterium [per mil SMOW] (dD) * PI: Wirth, Stefanie B (https://orcid.org/0000-0002-1276-8506, stefanie.wirth@alumni.ethz.ch)

Steinman, B. A., Pompeani, D. P., Abbott, M. B., Ortiz, J. D., Stansell, N. D., Finkenbinder, M. S., Mihindukulasooriya, L. N. and Hillman, A. L.: Oxygen isotope records of Holocene climate variability in the Pacific Northwest, Quaternary Science Reviews, 142, 40–60, doi:10.1016/j.quascirev.2016.04.012, 2016.

d18O (LPD7dc5b9ba): interpretation3_scope: '' has been replaced by 'isotope'
d18O (LPD7dc5b9ba): interpretation4_scope: '' has been replaced by 'isotope'
d13C (LPD87c74b66): interpretation2_scope: '' has been replaced by 'isotope'
d13C (LPD87c74b66): interpretation3_scope: '' has been replaced by 'isotope'
d13C (LPD87c74b66): interpretation4_scope: '' has been replaced by 'isotope'

d18O (LPD179d915e): interpretation3_scope: '' has been replaced by 'isotope'
d18O (LPD179d915e): interpretation4_scope: '' has been replaced by 'isotope'
d13C (LPDb99b434c): interpretation2_scope: '' has been replaced by 'isotope'
d13C (LPDb99b434c): interpretation3_scope: '' has been replaced by 'isotope'
d13C (LPDb99b434c): interpretation4_scope: '' has been replaced by 'isotope'

terrestrial plant leaf wax hydrogen isotope, possibly some aquatic waxes

Our interpretation of Lake N3 I´2Hterr as summer temperature is supported in several ways (Figure 3). First, I´2Hterr exhibits similar centennial-scale patterns during the past ~ 300 years as midge-inferred summer temperature anomalies at North Lake, western Greenland (Figure 3c) [Axford et al., 2013]. Coldest conditions in both records correspond with the Little Ice Age and end with warming in recent decades, a pattern also documented in Disko Bugt [Perner et al., 2013]. Second, the centennial-scale variability in Lake N3 I´2Hterr is remarkably similar to the 4 kyr-long record of annual average surface temperature at Greenland Ice Sheet Project 2 (GISP2), Greenland (r2 = 0.43) [Kobashi et al., 2011] (Figure 3b and Figure S5 in the supporting information), suggesting similar con- trols on late Holocene centennial-scale temperature at these sites, desGIte seasonal and elevation differences.