English: Illustration of the heterogeneous temporal placement of the concepts of "Medieval Warm Period (MWP)" / "Medieval Climate Anomaly (MCA)" and "Little Ice Age".
Deutsch: Illustration der heterogenen zeitlichen Einordnung von Konzepten einer "Mittelalterlichen Warmzeit (MWP)" / "Mittelalterlichen Klimaanomalie (MCA)" und "Kleinen Eiszeit (LIA)"
This image is intended to illustrate the vague and heterogeneous usage of the terms "Medieval Warm Period" / "Medieval Climate Anomaly" and "Little Ice Age (LIA)". The heterogeneous usage has been pointed out e.g. by Raymond S Bradley, Heinz Wanner and Henry F. Diaz The Medieval Quiet Period. In: The Holocene. 2016.
The definitions of IPCC AR5, WG I, Glossary was chosen as a reference; core periods as defined in IPCC AR5 are marked with vertical dashed lines. The papers of Lamb (1965), Stine (1994) were selected because they are often cited as coining the terms MWP, MCA resp. (see Henry F. Diaz et al.: Spatial and Temporal Characteristics of Climate in Medieval Times Revisited. In: Bulletin of the American Meteorological Society. November 2011, doi:10.1175/BAMS-D-10-05003.1 )
Other papers were selected by searching google scholar on May 27th, 2016, for "medieval warm period little ice age" and flipping through the first 50 hits. Within these hits, papers were selected that a) reported on original research (no reviews, general discussions) and classified their findings as being or falling into a MWP/MCA, LIA, and that b) could illustrate the heterogeinity of the usage of these terms.
The concept of a MWP/MCA is colored red, LIA blue. Blurred colors are used if the beginning or termination of an interval is only vaguely defined. If the paper reported results on a period before a "MWP"/ "MCA", this interval is shown too. If the findings are roughly comparable to those of the "MWP/MCA" or "LIA", it is colored correspondingly, "red" or "blue". If the period preceding a "MWP/MCA" has been labeled, e.g. as falling into a "Dark Cold Ages" period, this is mentioned under the colored bar.
Sources:
Driese (2004): Steven G. Driese et al.: Possible Late Holocene equatorial palaeoclimate record based upon soils spanning the Medieval Warm Period and Little Ice Age, Loboi Plain, Kenya. In: Palaeogeography, Palaeoclimatology, Palaeoecology. 2004, DOI: 10.1016/j.palaeo.2004.07.009
Goose (2004): H. Goose et al.: A late medieval warm period in the Southern Ocean as a delayed response to external forcing?. In: Geophysical Research Letters. 2004, DOI: 10.1029/2003GL019140
Haug (2001): Gerald H. Haug et al.: Southward Migration of the Intertropical Convergence Zone Through the Holocene. In: Science. 2001, DOI: 10.1126/science.1059725
Lamb (1965): Hubert Lamb: The Medieval Warm Epoch and its Sequel. In: Palaeogeography, Palaeoclimatology, Palaeoecology. 1965, DOI: 10.1016/0031-0182(65)90004-0
Liu (1998): Kam-biu Liu und Lonnie G. Thompson: A pollen record of Holocene climatic changes from the Dunde ice cap, Qinghai-Tibetan Plateau. In: Geology. 1998, DOI: 10.1130/0091-7613(1998)026<0135:APROHC>2.3.CO;2
Morellón (2011): Mario Morellón et al.: Climate changes and human activities recorded in the sediments of Lake Estanya (NE Spain) during the Medieval Warm Period and Little Ice Age. In: Journal of Paleolimnology. 2011, DOI: 10.1007/s10933-009-9346-3
Russell (2007): J.M. Russell und T.C. Johnson: Little Ice Age drought in equatorial Africa: Intertropical Convergence Zone migrations and El Niño–Southern Oscillation variability. In: Geology. 2007, DOI: 10.1130/G23125A.1
Stine (1994): Scott Stine: Extreme and persistent drought in California and Patagonia during mediaeval time. In: Nature. 1994. DOI: 10.1038/369546a0
Zhang (2009): Pingzhong Zhang et al.: A Test of Climate, Sun, and Culture Relationships from an 1810-Year Chinese Cave Record. In: Science. 2008, DOI: 10.1126/science.1163965.
Lisensiering
Jeg, rettighetsinnehaver av dette arbeidet, publiserer det herved under følgende lisenser:
Det tillates at dette dokumentet kopieres, distribueres og/eller modifiseres under retningslinjene som beskrevet i GNU fri dokumentasjonslisens, versjon 1.2 eller senere utgave utgitt av Free Software Foundation; med alle seksjoner, uten noen forsidetekster og baksidetekster. En kopi av lisensen er inkludert i avsnittet GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue
til å dele – til å kopiere, distribuere og overføre verket
til å blande – til å endre verket
Under de følgende betingelsene:
navngivelse – Du må kreditere verket på passende vis, lenke til lisensen og indikere hvorvidt det har blitt gjort endringer. Du kan gjøre det på enhver rimelig måte, men ikke på en måte som antyder at lisensgiveren støtter deg eller din bruk av verket.
https://creativecommons.org/licenses/by/3.0CC BY 3.0 Creative Commons Attribution 3.0 truetrue
Du kan velge lisens etter eget valg.
Bildetekster
Legg til en kort forklaring på hva filen representerer
{{Information |Description ={{en|1=Illustration of the heterogeneous temporal placement of the concepts of "Medieval Warm Period (MWP)" / "Medieval Climate Anomaly (MCA)" and "Little Ice Age". }} {{de|1=Illustration der heterogenen zeitlichen Einord...