Top-heavy double-diffusive rotating convection in a spherical shell

This dataset contains numerical simulations of bottom-heated, top-heavy double-diffusive convection in a rotating spherical shell. These models are designed to investigate convective dynamics in planetary interiors, with a particular focus on processes occurring near the top of Earth’s outer core [1]. The simulations span a range of thermal and compositional forcings, enabling the study of how lower-mantle heterogeneities influence core convection. The dataset provides: 1. Simulation state files (final states and time-averaged states) in NetCDF format. Due to the large size of full state outputs, only these two files are included. 2. Time-series outputs of key dynamical variables. 3. Post-processed diagnostic quantities, including spatial and temporal averages, kinetic energy budgets, forces relevant to double-diffusive dynamics [2]. 4. Diagnostic quantities to assess possible thermally and/or compositionally stratified layers near the core–mantle boundary. All simulations were produced using the Leeds Spherical Dynamo Code [3] and run on the ARCHER2 high-performance computing system. References: [1] https://doi.org/10.48550/arXiv.2507.03538 [2] https://doi.org/10.1017/jfm.2025.259 [3] https://github.com/Leeds-Spherical-Dynamo/leeds-spherical-dynamo

Date (Creation): 2026-03-24

Citation identifier: http://data.bgs.ac.uk/id/dataHolding/13608666

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of Leeds	Jonathan Mound	not available	Originator
University of Leeds	Souvik Naskar	not available	Originator
University of Leeds	Christopher Davies	not available	Originator
British Geological Survey	Enquiries	not available	Distributor
British Geological Survey	Enquiries	not available	Point of contact

Maintenance and update frequency: notApplicable

GEMET - INSPIRE themes, version 1.0

Geology

BGS Thesaurus of Geosciences

Earth core

dataCentre

Keywords

NERC_DDC

Access constraints: Other restrictions

Other constraints: licenceOGL

Other constraints: Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Use constraints: Other restrictions

Other constraints: The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Other constraints: Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Language: English

Topic category

Geoscientific information

Begin date: 2023-05-01

End date: 2026-02-28

Reference System Information

No information provided.

Distribution format

Name	Version
netCDF

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey	Enquiries	not available	Distributor

OnLine resource

Protocol	Linkage	Name
WWW:DOWNLOAD-1.0-http--download	https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item191957	Data

OnLine resource

Protocol	Linkage	Name
	https://doi.org/10.5285/74c2ed9d-6ab4-4d24-863d-5991afbe84ce	Digital Object Identifier (DOI)

Hierarchy level: Non geographic dataset

Other: non geographic dataset

Conformance result

Title: INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication): 2011

Explanation: See the referenced specification

Pass: No

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services