Evaluating model outputs using integrated global speleothem records of climate change since the last glacial
Although quantitative isotope data from speleothems has been used to evaluate isotope-enabled model simulations, currently no consensus exists regarding the most appropriate methodology through which to achieve this. A number of modelling groups will be running isotope-enabled palaeoclimate simulati...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:10086566 2023-12-24T10:23:17+01:00 Evaluating model outputs using integrated global speleothem records of climate change since the last glacial Comas-Bru, L Harrison, SP Werner, M Rehfeld, K Scroxton, N Veiga-Pires, C Ahmad, SM Brahim, YA Mozhdehi, SA Arienzo, M Atsawawaranunt, K Baker, A Braun, K Breitenbach, S Burstyn, Y Chawchai, S Columbu, A Deininger, M Demeny, A Dixon, B Hatvani, IG Hu, J Kaushal, N Kern, Z Labuhn, I Lachniet, MS Lechleitner, FA Lorrey, A Markowska, M Nehme, C Novello, VF Oster, J Perez-Mejias, C Pickering, R Sekhon, N Wang, X Warken, S Atkinson, T Ayalon, A Baldini, J Bar-Matthews, M Bernal, JP Boch, R Borsato, A Boyd, M Brierley, C Cai, Y Carolin, S Cheng, H Constantin, S Couchoud, I Cruz, F Denniston, R Dragusin, V Duan, W Ersek, V Finne, M Fleitmann, D Fohlmeister, J Frappier, A Genty, D Holzkamper, S Hopley, P Johnston, V Kathayat, G Keenan-Jones, D Koltai, G Li, T-Y Lone, MA Luetscher, M Mattey, D Moreno, A Moseley, G Psomiadis, D Ruan, J Scholz, D Sha, L Smith, AC Strikis, N Treble, P Unal-Imer, E Vaks, A Vansteenberge, S Voarintsoa, NRG Wong, C Wortham, B Wurtzel, J Zhang, H 2019-08-09 text https://discovery.ucl.ac.uk/id/eprint/10086566/1/cp-15-1557-2019.pdf https://discovery.ucl.ac.uk/id/eprint/10086566/ eng eng COPERNICUS GESELLSCHAFT MBH https://discovery.ucl.ac.uk/id/eprint/10086566/1/cp-15-1557-2019.pdf https://discovery.ucl.ac.uk/id/eprint/10086566/ open Climate of the Past , 15 (4) pp. 1557-1579. (2019) Science & Technology Physical Sciences Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology STABLE-ISOTOPE VARIATIONS GROWTH FREQUENCY VARIATIONS GENERAL-CIRCULATION MODEL DELTA-O-18 WATER ISOTOPE HIGH-RESOLUTION OXYGEN-ISOTOPE ASIAN MONSOON ATMOSPHERIC CIRCULATION NORTH-ATLANTIC PMIP4 CONTRIBUTION Article 2019 ftucl 2023-11-27T13:07:39Z Although quantitative isotope data from speleothems has been used to evaluate isotope-enabled model simulations, currently no consensus exists regarding the most appropriate methodology through which to achieve this. A number of modelling groups will be running isotope-enabled palaeoclimate simulations in the framework of the Coupled Model Intercomparison Project Phase 6, so it is timely to evaluate different approaches to using the speleothem data for data–model comparisons. Here, we illustrate this using 456 globally distributed speleothem δ18O records from an updated version of the Speleothem Isotopes Synthesis and Analysis (SISAL) database and palaeoclimate simulations generated using the ECHAM5-wiso isotope-enabled atmospheric circulation model. We show that the SISAL records reproduce the first-order spatial patterns of isotopic variability in the modern day, strongly supporting the application of this dataset for evaluating model-derived isotope variability into the past. However, the discontinuous nature of many speleothem records complicates the process of procuring large numbers of records if data–model comparisons are made using the traditional approach of comparing anomalies between a control period and a given palaeoclimate experiment. To circumvent this issue, we illustrate techniques through which the absolute isotope values during any time period could be used for model evaluation. Specifically, we show that speleothem isotope records allow an assessment of a model's ability to simulate spatial isotopic trends. Our analyses provide a protocol for using speleothem isotope data for model evaluation, including screening the observations to take into account the impact of speleothem mineralogy on δ18O values, the optimum period for the modern observational baseline and the selection of an appropriate time window for creating means of the isotope data for palaeo-time-slices. Article in Journal/Newspaper North Atlantic University College London: UCL Discovery |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
topic |
Science & Technology Physical Sciences Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology STABLE-ISOTOPE VARIATIONS GROWTH FREQUENCY VARIATIONS GENERAL-CIRCULATION MODEL DELTA-O-18 WATER ISOTOPE HIGH-RESOLUTION OXYGEN-ISOTOPE ASIAN MONSOON ATMOSPHERIC CIRCULATION NORTH-ATLANTIC PMIP4 CONTRIBUTION |
spellingShingle |
Science & Technology Physical Sciences Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology STABLE-ISOTOPE VARIATIONS GROWTH FREQUENCY VARIATIONS GENERAL-CIRCULATION MODEL DELTA-O-18 WATER ISOTOPE HIGH-RESOLUTION OXYGEN-ISOTOPE ASIAN MONSOON ATMOSPHERIC CIRCULATION NORTH-ATLANTIC PMIP4 CONTRIBUTION Comas-Bru, L Harrison, SP Werner, M Rehfeld, K Scroxton, N Veiga-Pires, C Ahmad, SM Brahim, YA Mozhdehi, SA Arienzo, M Atsawawaranunt, K Baker, A Braun, K Breitenbach, S Burstyn, Y Chawchai, S Columbu, A Deininger, M Demeny, A Dixon, B Hatvani, IG Hu, J Kaushal, N Kern, Z Labuhn, I Lachniet, MS Lechleitner, FA Lorrey, A Markowska, M Nehme, C Novello, VF Oster, J Perez-Mejias, C Pickering, R Sekhon, N Wang, X Warken, S Atkinson, T Ayalon, A Baldini, J Bar-Matthews, M Bernal, JP Boch, R Borsato, A Boyd, M Brierley, C Cai, Y Carolin, S Cheng, H Constantin, S Couchoud, I Cruz, F Denniston, R Dragusin, V Duan, W Ersek, V Finne, M Fleitmann, D Fohlmeister, J Frappier, A Genty, D Holzkamper, S Hopley, P Johnston, V Kathayat, G Keenan-Jones, D Koltai, G Li, T-Y Lone, MA Luetscher, M Mattey, D Moreno, A Moseley, G Psomiadis, D Ruan, J Scholz, D Sha, L Smith, AC Strikis, N Treble, P Unal-Imer, E Vaks, A Vansteenberge, S Voarintsoa, NRG Wong, C Wortham, B Wurtzel, J Zhang, H Evaluating model outputs using integrated global speleothem records of climate change since the last glacial |
topic_facet |
Science & Technology Physical Sciences Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology STABLE-ISOTOPE VARIATIONS GROWTH FREQUENCY VARIATIONS GENERAL-CIRCULATION MODEL DELTA-O-18 WATER ISOTOPE HIGH-RESOLUTION OXYGEN-ISOTOPE ASIAN MONSOON ATMOSPHERIC CIRCULATION NORTH-ATLANTIC PMIP4 CONTRIBUTION |
description |
Although quantitative isotope data from speleothems has been used to evaluate isotope-enabled model simulations, currently no consensus exists regarding the most appropriate methodology through which to achieve this. A number of modelling groups will be running isotope-enabled palaeoclimate simulations in the framework of the Coupled Model Intercomparison Project Phase 6, so it is timely to evaluate different approaches to using the speleothem data for data–model comparisons. Here, we illustrate this using 456 globally distributed speleothem δ18O records from an updated version of the Speleothem Isotopes Synthesis and Analysis (SISAL) database and palaeoclimate simulations generated using the ECHAM5-wiso isotope-enabled atmospheric circulation model. We show that the SISAL records reproduce the first-order spatial patterns of isotopic variability in the modern day, strongly supporting the application of this dataset for evaluating model-derived isotope variability into the past. However, the discontinuous nature of many speleothem records complicates the process of procuring large numbers of records if data–model comparisons are made using the traditional approach of comparing anomalies between a control period and a given palaeoclimate experiment. To circumvent this issue, we illustrate techniques through which the absolute isotope values during any time period could be used for model evaluation. Specifically, we show that speleothem isotope records allow an assessment of a model's ability to simulate spatial isotopic trends. Our analyses provide a protocol for using speleothem isotope data for model evaluation, including screening the observations to take into account the impact of speleothem mineralogy on δ18O values, the optimum period for the modern observational baseline and the selection of an appropriate time window for creating means of the isotope data for palaeo-time-slices. |
format |
Article in Journal/Newspaper |
author |
Comas-Bru, L Harrison, SP Werner, M Rehfeld, K Scroxton, N Veiga-Pires, C Ahmad, SM Brahim, YA Mozhdehi, SA Arienzo, M Atsawawaranunt, K Baker, A Braun, K Breitenbach, S Burstyn, Y Chawchai, S Columbu, A Deininger, M Demeny, A Dixon, B Hatvani, IG Hu, J Kaushal, N Kern, Z Labuhn, I Lachniet, MS Lechleitner, FA Lorrey, A Markowska, M Nehme, C Novello, VF Oster, J Perez-Mejias, C Pickering, R Sekhon, N Wang, X Warken, S Atkinson, T Ayalon, A Baldini, J Bar-Matthews, M Bernal, JP Boch, R Borsato, A Boyd, M Brierley, C Cai, Y Carolin, S Cheng, H Constantin, S Couchoud, I Cruz, F Denniston, R Dragusin, V Duan, W Ersek, V Finne, M Fleitmann, D Fohlmeister, J Frappier, A Genty, D Holzkamper, S Hopley, P Johnston, V Kathayat, G Keenan-Jones, D Koltai, G Li, T-Y Lone, MA Luetscher, M Mattey, D Moreno, A Moseley, G Psomiadis, D Ruan, J Scholz, D Sha, L Smith, AC Strikis, N Treble, P Unal-Imer, E Vaks, A Vansteenberge, S Voarintsoa, NRG Wong, C Wortham, B Wurtzel, J Zhang, H |
author_facet |
Comas-Bru, L Harrison, SP Werner, M Rehfeld, K Scroxton, N Veiga-Pires, C Ahmad, SM Brahim, YA Mozhdehi, SA Arienzo, M Atsawawaranunt, K Baker, A Braun, K Breitenbach, S Burstyn, Y Chawchai, S Columbu, A Deininger, M Demeny, A Dixon, B Hatvani, IG Hu, J Kaushal, N Kern, Z Labuhn, I Lachniet, MS Lechleitner, FA Lorrey, A Markowska, M Nehme, C Novello, VF Oster, J Perez-Mejias, C Pickering, R Sekhon, N Wang, X Warken, S Atkinson, T Ayalon, A Baldini, J Bar-Matthews, M Bernal, JP Boch, R Borsato, A Boyd, M Brierley, C Cai, Y Carolin, S Cheng, H Constantin, S Couchoud, I Cruz, F Denniston, R Dragusin, V Duan, W Ersek, V Finne, M Fleitmann, D Fohlmeister, J Frappier, A Genty, D Holzkamper, S Hopley, P Johnston, V Kathayat, G Keenan-Jones, D Koltai, G Li, T-Y Lone, MA Luetscher, M Mattey, D Moreno, A Moseley, G Psomiadis, D Ruan, J Scholz, D Sha, L Smith, AC Strikis, N Treble, P Unal-Imer, E Vaks, A Vansteenberge, S Voarintsoa, NRG Wong, C Wortham, B Wurtzel, J Zhang, H |
author_sort |
Comas-Bru, L |
title |
Evaluating model outputs using integrated global speleothem records of climate change since the last glacial |
title_short |
Evaluating model outputs using integrated global speleothem records of climate change since the last glacial |
title_full |
Evaluating model outputs using integrated global speleothem records of climate change since the last glacial |
title_fullStr |
Evaluating model outputs using integrated global speleothem records of climate change since the last glacial |
title_full_unstemmed |
Evaluating model outputs using integrated global speleothem records of climate change since the last glacial |
title_sort |
evaluating model outputs using integrated global speleothem records of climate change since the last glacial |
publisher |
COPERNICUS GESELLSCHAFT MBH |
publishDate |
2019 |
url |
https://discovery.ucl.ac.uk/id/eprint/10086566/1/cp-15-1557-2019.pdf https://discovery.ucl.ac.uk/id/eprint/10086566/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Climate of the Past , 15 (4) pp. 1557-1579. (2019) |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/10086566/1/cp-15-1557-2019.pdf https://discovery.ucl.ac.uk/id/eprint/10086566/ |
op_rights |
open |
_version_ |
1786197164146294784 |