Abstract. The early to mid-Holocene thermal optimum is a well-known feature in a wide variety of paleoclimate archives from the Northern Hemisphere. Reconstructed summer temperature anomalies from across northern Europe show a clear maximum around 6000 years before present (6 ka). For the marine realm, Holocene trends in sea-surface temperature reconstructions for the North Atlantic and Norwegian Sea do not exhibit a consistent pattern of early to midHolocene warmth. Sea-surface temperature records based on alkenones and diatoms generally show the existence of a warm early to mid-Holocene optimum. In contrast, several foraminifer and radiolarian based temperature records from the North Atlantic and Norwegian Sea show a cool midHolocene anomaly and a trend towards warmer temperatures in the late Holocene. In this paper, we revisit the foraminifer record from the Vøring Plateau in the Norwegian Sea. We also compare this record with published foraminifer based temperature reconstructions from the North Atlantic and with modelled (CCSM3) upper ocean temperatures. Model results indicate that while the seasonal summer warming of the seasurface was stronger during the mid-Holocene, sub-surface depths experienced a cooling. This hydrographic setting can explain the discrepancies between the Holocene trends exhibited by phytoplankton and zooplankton based temperature proxy records.

No abstract

Purpose Sustainable production (SP) is a very broad area and the awareness and communication of the concept differ between varying levels in a company. The supposition is that the awareness and improvement of sustainability on shop floor level would improve, if a suitable set of indicators for measuring sustainability was available. The purpose of this paper is therefore to identify a list of performance indicators relevant for a production manager. Design/methodology/approach This paper presents a two-step analysis, where the first step is a literature review with the purpose of compiling a gross list of sustainability indicators relevant on shop floor level. In the second phase, the relevance of this list for production managers in Swedish small- and medium-sized enterprises (SMEs) is tested in a questionnaire survey. Findings The conclusion from the survey is that 27 out of 52 proposed indicators were relevant with statistical significance and that another 20 indicators were supported by at least 50 percent of the respondents. The respondents found the economic indicators to be most relevant for their purpose. However, the economic field seems to need more indicators in order to be more useful for daily operation. Practical implications This set of indicators may be beneficial for companies seeking relevant indicators to drive sustainability improvements. Originality/value This paper takes a new perspective on SP, as it focusses on shop floor production, which is possible to influence for a production manager.

The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.