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The 1540 drought in Europe was a climatic event in Europe. In various palaeoclimatic analyses the temperature and precipitation regimes were reconstructed and compared to present-day conditions.
On the basis of historical records Wetter et al. (2014) [1] derived that during an eleven-month period there was little rain in Europe, possibly qualifying as a megadrought. [2] These conclusions however were questioned by Büntgen et al. (2015) [3] on the basis of additional data (tree rings).
Orth et al. (2016) [4] concluded that in summer 1540 the mean temperature was above the 1966–2015 mean and with a probability of 20% exceeded that of the 2003 summer; however, the study's mean reconstruction suggests that the summer of 2003 was still overall hotter across much of Europe.
The assumption of a megadrought in the year 1540 is primarily supported by more than 300 contemporary chronicles from across Europe, which consistently describe the effects of prolonged drought and heat, such as a significant precipitation deficit, extremely low levels of major rivers, widespread wildfires, the lowering of groundwater levels (resulting in the drying up of wells), as well as severe consequences for agriculture and livestock farming. Particularly reliable sources include the extensive weather diary of Marcin Biem, the rector of the University of Kraków, whose records allow for the statistical reconstruction of precipitation levels in the Kraków region for the year 1540. [5]
In contrast, a study published in 2015, based on the analysis of growth rings of various European tree species (dendrochronology, also known as tree-ring dating), concluded that the conducted analyses did not provide evidence of an exceptional drought period throughout 1540. [6] In their reply, the authors of the aforementioned study (Wetter et al.) pointed out that growth rings may sometimes incompletely or belatedly reflect hot and dry extremes, emphasizing the fact that discrepancies between instrumentally determined and dendrochronological data have often occurred in recent times during climatic "outliers" (the "divergence problem"). [7] [8]
A publication from 2016 assumes that the average summer temperature in 1540 exceeded the corresponding average values of the 1966 to 2015 time series and, with a 20 percent probability, even surpassed the heatwave of the summer of 2003. [9] In this context, the existing uncertainties regarding the available data, which hinder reliable temperature reconstructions for short-term anomalies during the last millennium, were also mentioned.
The weather conditions of 1540 present a paradoxical situation since this exceptional year occurred during the Little Ice Age, which lasted approximately from the early 15th to the mid-19th century. However, the question raised by some studies focuses more on whether this singular event could serve as a "blueprint" for future climatic developments in this geographical context. [5] According to several scientific studies, there has been a clear tendency worldwide towards the formation of warm and dry climates in recent decades. [10] With further warming, the disappearance of existing climate zones and the establishment of new ones in Central Europe will likely occur, [11] similar to what happened at least to some extent almost 500 years ago.
The Swiss historian Christian Pfister described the events of 1540 in a newspaper interview: [12]
For eleven months, there was practically no rain, temperatures were five to seven degrees [Celsius] [9–13 °F] above the normal values for the 20th century, in many places summer temperatures must have exceeded 40 °C (104 °F). Many forests in Europe went up in flames, choking smoke darkened the sun, not a single thunderstorm was reported in the summer of 1540. Water was already scarce in May, wells and springs dried up, mills stood still, people starved, livestock was slaughtered. Estimates are that in 1540 half a million people died, mostly from dysentery.
Everything began in northern Italy, with a winter that felt like a July. Not a single drop fell from October 1539 to early April 1540. Then the drought advanced north. ... July brought such a frightful ember-like heat that churches made prayers while the Rhine, Elbe and Seine could be waded through without getting one's feet wet. Where there was still water, the warm broth acquired a green colour, and dead fish floated belly-up. Water levels in Lake Constance sank to record low levels, and Lindau actually became connected to the mainland. Soon the surface water had completely evaporated, soils broke up, some dry cracks were so wide that a foot would fit into them. ...
The first grapes were already ripe by 12 August, in Alsace fruit trees bloomed a second time, in Lindau it was actually enough for a second cherry harvest. At Lake Constance and in Bayreuth wine eventually became cheaper than water, and in Limoges winemakers were harvesting roasted grapes, from which they obtained sherry-like wine, which ... made one quickly drunk. [12] [13]
From the city of Münden there is a description of how in the year 1540 the ducal wine from the vineyard at Questenberg was "so excellent" that it was preferred to foreign wine. [14]
In the Swiss village of Goldiwil , "desperate people went over 500 m [1,600 ft] up and down in elevation every day, only to fill a few barrels of water in Lake Thun". [15]
In the year 1540, there was an unusually high number of city fires, surpassed only during the height of the Thirty Years' War, in a year without major war damages. In Einbeck, the Kumme Wasser, a stream flowing through the city, was likely dried up. On "Annentag" (the day of Saint Anne), July 26th, [16] a fire broke out, and the entire city was destroyed in the Einbeck city fire, with between 100 and 500 people dying. There are records of 32 additional city fires in German territory for the year 1540. The fires occurred during a time of political and religious conflicts surrounding the Reformation. In many cases, arson was suspected as the cause of the conflagrations, allegedly motivated by anti-Protestant sentiments. Vagabonds and beggars were often scapegoated, leading to a genuine paranoia regarding arsonists. The year 1540 also became known as the "Mordbrenner-Jahr" (year of arsonists). [17]
A drought is a period of drier-than-normal conditions. A drought can last for days, months or years. Drought often has large impacts on the ecosystems and agriculture of affected regions, and causes harm to the local economy. Annual dry seasons in the tropics significantly increase the chances of a drought developing, with subsequent increased wildfire risks. Heat waves can significantly worsen drought conditions by increasing evapotranspiration. This dries out forests and other vegetation, and increases the amount of fuel for wildfires.
Dendrochronology is the scientific method of dating tree rings to the exact year they were formed in a tree. As well as dating them, this can give data for dendroclimatology, the study of climate and atmospheric conditions during different periods in history from the wood of old trees. Dendrochronology derives from the Ancient Greek dendron, meaning "tree", khronos, meaning "time", and -logia, "the study of".
A volcanic winter is a reduction in global temperatures caused by droplets of sulfuric acid obscuring the Sun and raising Earth's albedo (increasing the reflection of solar radiation) after a large, sulfur-rich, particularly explosive volcanic eruption. Climate effects are primarily dependent upon the amount of injection of SO2 and H2S into the stratosphere where they react with OH and H2O to form H2SO4 on a timescale of a week, and the resulting H2SO4 aerosols produce the dominant radiative effect. Volcanic stratospheric aerosols cool the surface by reflecting solar radiation and warm the stratosphere by absorbing terrestrial radiation for several years. Moreover, the cooling trend can be further extended by atmosphere–ice–ocean feedback mechanisms. These feedbacks can continue to maintain the cool climate long after the volcanic aerosols have dissipated.
Einbeck is a town in the district Northeim, in southern Lower Saxony, Germany, on the German Timber-Frame Road.
Hans von Storch is a German climate scientist. He is a professor at the Meteorological Institute of the University of Hamburg, and Director of the Institute for Coastal Research at the Helmholtz Research Centre in Geesthacht, Germany. He is a member of the advisory boards of the journal Journal of Climate. He worked at the Max Planck Institute for Meteorology from 1986 to 1995 and headed the Statistical Analysis and Modelling research group there.
The Liberales Institut is a Swiss classical liberal think tank, founded in Zürich in 1979 by Lili Nabholz, Thomas Wagner, Walter Blum and Ulrich Pfister. It publishes mainly in German, French and Italian, and accessorily in English.
Jan Esper studied geography at the University of Bonn, where he later earned his doctorate. After a postdoc position at Columbia University in New York City, he continued his work on dendrochronology at the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), and qualified as a professor at the University of Bern. In 2018, Esper became a member of the Academy of Sciences and Literature. Since 2010, he has been a professor at the Department of Geography at Johannes Gutenberg University Mainz.
The Subatlantic is the current climatic age of the Holocene epoch. It started about 2,500 years BP and is still ongoing. Its average temperatures are slightly lower than during the preceding Subboreal and Atlantic. During its course, the temperature underwent several oscillations, which had a strong influence on fauna and flora and thus indirectly on the evolution of human civilizations. With intensifying industrialisation, human society started to stress the natural climatic cycles with increased greenhouse gas emissions.
Europe is generally characterized by a temperate climate. Most of Western Europe has an Oceanic climate, in the Köppen climate classification, featuring cool to warm summers and cool winters with frequent overcast skies. Southern Europe has a distinctively Mediterranean climate, which features warm to hot, dry summers and cool to mild winters and frequent sunny skies. Central-eastern Europe is classified as having a humid continental climate, which features warm to hot summers and cold winters.
St. Mary Magdalene's flood was the largest recorded flood in central Europe with water levels exceeding those of the 2002 European floods. It occurred on and around the feast day of St. Mary Magdalene, 22 July in 1342.
A megadrought is an exceptionally severe drought, lasting for many years and covering a wide area.
The Late Antique Little Ice Age (LALIA) was a long-lasting Northern Hemispheric cooling period in the 6th and 7th centuries AD, during the period known as Late Antiquity. The period coincides with three large volcanic eruptions in 535/536, 539/540 and 547. The volcanic winter of 536 was the early phenomenon of the century-long global temperature decline. One study suggested a global cooling of 2 °C (3.6 °F). The period contributed to the decline of the Roman Empire and influenced the second wave migration period, primarily of the early Slavs.
In 1257, a catastrophic eruption occurred at Samalas, a volcano on the Indonesian island of Lombok. The event had a probable Volcanic Explosivity Index of 7, making it one of the largest volcanic eruptions during the Holocene epoch. It left behind a large caldera that contains Lake Segara Anak. Later volcanic activity created more volcanic centres in the caldera, including the Barujari cone, which remains active.
A very significant heat wave occurred in Europe in July 1757. The heat wave may have been the hottest summer in Continental Europe between the summers of 1540 and 2003. July 1757 was the hottest month in the history of Paris with an average temperature of 25 °C (77 °F), and it reached a high of 37.5 °C (99.5 °F) on 14 July. Similarly, over Central England, July 1757 was the hottest month on record since 1659, at the time, and would not be beaten until July 1783. It still is the ninth-warmest on record in that series.
Lisa J. Graumlich is an American paleoclimatologist who studies the interactions between the climate, ecosystems and humans. She is the inaugural dean of College of the Environment at the University of Washington. Graumlich is a Fellow of the American Association for the Advancement of Science and the Ecological Society of America, and is president-elect of the American Geophysical Union.
The Medieval Warm Period (MWP), also known as the Medieval Climate Optimum or the Medieval Climatic Anomaly, was a time of warm climate in the North Atlantic region that lasted from about 950 CE to about 1250 CE. Climate proxy records show peak warmth occurred at different times for different regions, which indicate that the MWP was not a globally uniform event. Some refer to the MWP as the Medieval Climatic Anomaly to emphasize that climatic effects other than temperature were also important.
Christian Pfister is a Swiss historian.
Rosanne D'Arrigo is a professor at Lamont–Doherty Earth Observatory at Columbia University known for her research into climate change using dendrochronology, or dating based on tree rings.
The southwestern North American megadrought is an ongoing megadrought in the southwestern region of North America that began in 2000. At least 24 years in length, the drought is the driest multi-decade period the region has seen since at least 800 CE. The megadrought has prompted the declaration of a water shortage at Lake Mead, the largest reservoir in the United States. Climate change models project drier conditions in the region through the end of the 21st century, though climate change mitigation may avoid the most extreme impacts.
Heinz Wanner is a Swiss geographer and climate researcher. He is a professor emeritus and works at the Oeschger Centre for Climate Change Research of the University of Bern.
Elf Monate fiel damals so gut wie kein Regen, die Temperatur lag fünf bis sieben Grad über den Normalwerten des 20. Jahrhunderts, verbreitet muss die Temperatur im Hochsommer über 40 Grad geklettert sein. Unzählige Waldgebiete in Europa gingen in Flammen auf, beißender Rauch trübte das Sonnenlicht, im ganzen Sommer 1540 wurde kein einziges Gewitter registriert. Schon im Mai wurde das Wasser knapp, Brunnen und Quellen fielen trocken, die Mühlen standen still, die Leute hungerten, das Vieh wurde notgeschlachtet. In Europa starben in jenem Jahr schätzungsweise eine Million Menschen, die meisten an Ruhr. Alles begann in Norditalien, mit einem Winter, der sich wie ein Juli anfühlte. Kein Tropfen fiel von Oktober 1539 bis Anfang April 1540. Dann griff die Dürre auf den Norden über. ... Der Juli brachte eine solche fürchterliche Gluthitze, dass die Kirchen Bittgebete aussandten, während Rhein, Elbe und Seine trockenen Fußes durchwatet werden konnten. Dort, wo noch Wasser floss, färbte sich die warme Brühe grün, Fische trieben darin kieloben. Der Bodenseepegel sank auf Rekordniveau, Lindau war sogar mit dem Festland verbunden. Bald verdunstete das Oberflächenwasser vollständig, die Böden platzten auf, manche Trockenrisse waren so groß, dass ein Fuß darin Platz fand. Die ersten Trauben waren schon am 12. August reif, im Elsass blühten bald die Obstbäume erneut, in Lindau reichte es sogar für eine zweite Kirschernte. Am Bodensee und in Bayreuth war Wein irgendwann billiger als Wasser, und in Limoges ernteten die Winzer geröstete Trauben, aus denen sie sherryähnlichen Wein gewannen, der sehr schnell betrunken machte.