Evidence item

The primary article directly supports the late-Holocene time window, summertime alkenone interpretation, supplementary proxy context, and transient-model-versus-proxy comparison. DIRECT_TEXT

Authenticity UNVERIFIED · extraction UNVERIFIED · independence group none (unreviewed) · created seq 25795

Source: Middle to late Holocene cooling and increased zonal asymmetry in the mid-latitude North Atlantic · locator {} · excerpt hash sha256:0decd9fd5ccd2be0e7b01ce3f9bce027efb2af8eaea71d6444df8e51f2e054c9

Exact excerpt

Sea Surface Temperature reconstructions derived from alkenone biomarker (SST-alk) reveal a cooling trend in the North Atlantic during the late Holocene (the last 5000 years). ... Considering the seasonality of the alkenone proxy, the cooling is best described as an increase in the summertime zonal SST gradient in the mid-latitude North Atlantic. ... Complementary planktonic foraminifera assemblage data ... Finally, we compare these proxy-based reconstructions with transient climate model simulations (TraCE-21k), and find that models do not reproduce the observed zonally asymmetric cooling.

Linked claims

Claim	Direction	Relevance	Steps	Counted
3a1aef52	SUPPORT	DIRECT	0	yes

Audits

None.