ice globe

Natural Climate Change
and Variability

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Below is a checklist of postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.) related to natural climate change and variability. Catalog numbers, years of issue, and notes on the items featured are given when available. If readers know of additional information or images, please contact the authors using the e-mail addresses at the bottom of this page.

Philatelic items for people who contributed to climatology are found in the Climatologists and contributors to climatology page, where brief classifications of their principal climatological contributions are found. In that page the natural climate change theme is listed in green, so the user can easily find all the climatologists who contributed to the theme of natural climate change.

Sections/divisions of the table below
Ice ages
The seasons
Effect of large comets/asteroids striking the Earth
Solar effects
Effect of continental drift
Volcanic effects
Ocean effects
Forests and climate
Climate records from proxies:
Ice cores
Marine sediments and coring
Tree rings (dendrochronology)


CountryCatalog NumberType of ItemYear of IssueNotes on Content
Ice ages
 

Ice Ages

Ice ages are major climatic events that have occurred many times in the past. In the 1920s the Serbian mathematician Milutin Milanković hypothesized that there are relationships between long-term cycles in the Earth's climate and changes in its orbital eccentricity, axial tilt and precession, and derived formulas that describe the cycles and show how they can interact so that at some times there is more sunlight striking the Earth, and at others there is less. When there is less, snow and ice can accumulate and glaciers can advance, forming an ice age. When there is more, there is warming and the ice retreats. The theory of Milanković cycles remained controversial, but a paper published in the journal Science in 1976 ("Variations in the Earth's orbit: pacemaker of the Ice Ages" by Hayes, Imbrie and Shackleton) confirmed the basic ideas. In it, measurements from deep ocean sediment cores along with new understanding of celestial mechanics were used to show that variations in solar insolation were the main cause of the advance and retreat of ice sheets in the Quaternary period.

One secondary effect of ice ages is that as the temperature decreases and the ice sheets advance, the sea level drops as some of the water is taken into the glaciers, and vice-versa.

Great Britain (Jersey)285 (Mi?)From MS20 (285a (20x 285))198216,000 BC: ice begins to retreat from the point of greatest glaciation of last ice age; sea level is at its lowest
Great Britain (Jersey)286 (Mi?)From MS20 (286a (20x 286))10,000 BC: ice continues to retreat and sea level is rising
Great Britain (Jersey)287 (Mi?)From MS20 (287a (20x 287))7,000 BC: with continued warming, ice has retreated more and sea level has continued to rise
Great Britain (Jersey)288 (Mi?)From MS20 (288a (20x 288))4,000 BC: Temperatures and sea level have risen to almost modern values
Great Britain (Jersey)285-288 fdc1Four stamps on FDC(As above)
Great Britain (Jersey)285-288 fdc2Four stamps on FDC (different)(As above)
The seasons
No postal items available yet
Effect of large comets/asteroids striking the Earth
No postal items available yet
Solar effects
 

Solar Effects

The sun provides the energy (solar radiant energy of approximately 1361 W/m2, known as the solar constant) that drives Earth's weather and climate. The solar constant is in fact not perfectly constant: there are small variations, some periodic and some aperiodic. The main periodic variation is referred to as the solar cycle, perhaps more commonly known as the 11 year sunspot cycle. It was discovered in 1843 by the German astronomer Samuel Heinrich Schwabe. Various attempts have been made to link solar variability as seen in the sunspot cycle, or longer term solar variability, with variability in Earth's climate. None have been conclusive.

This table contains philatelic items that include references to the Sun or show solar images, including sunspots and other solar effects, in the general context of the Sun as the source of the Earth's energy and the driver of the Earth's climate. No attempt is made to be complete.

Austria2083 (Mi?)2007"Fire (the Sun) and Earth" (in text)
Austria2083 blackBlackprint
Belgium2016 (Mi3279)
i2016
From MS10 (2016a (10x 2016))2004"Sun-Earth relationships"
Belgium2016 fdcStamp and cachet on FDC (Liege cancel)
Belgium2016 fdc2Stamp and cancel (same) and cachet (different) on FDC (Liege cancel)
Belgium2016 maxiMaxicard (Liege cancel)
Belgium2018 (Mi3281)
i2018
From MS10 (2018a (10x 2018))Sun, sunspots and schematic variations of solar energy output with time
Belgium2018 fdc1Stamp and cachet on FDC (Liege cancel)
Belgium2018 maxiMaxicard (Liege cancel)
Belgium2015-2018 fdcTwo of four stamps on FDC (Liege cancel)(As above)
Belgium2015-2018 fd-sheetTwo of four stamps on FD sheet (Brussels cancel)
Belgium2434d (Mi?)One of strip of 5 (2434 (a-e)), or two of MS10 (2434f (2x (2434 (a-e)))2010Symbolic sun heating the Earth
Great BritainUnknown a (Mi?)From presentation pack (a-f)2012Sun seen by SOHO satellite
United StatesNone(Mission-57) cachet on Glory and E1P and KySat-1 and Hermes launch cover back, also front2011"measure solar irradiance and its effects on Earth's long-term climate - knowing how the [sun's] electromagnetic spectrum fluctuates, scientists will understand how the sun affects the Earth's temperature".
Effect of continental drift
 

Continental Drift in a Philatelic Context

Continental drift is the movement of the Earth's land masses relative to each other over geological time periods. The geophysicist and meteorologist Alfred Wegener developed the theory starting in around 1912 and coined the term die Verschiebung der Kontinente (continental drift). The South African geologist Alexander du Toit, working more or less independently, proposed similar ideas. The climatologist Wladimir Köppen worked with Wegener to build the theory. They were convinced that the movement of continents over time could account for the geological and paleoclimatic evidence that ancient climates had been vastly different from modern ones. Ernest Shackleton's Antarctic expedition of 1908-9 had found fossilized plants and coal seams in the Beardmore Glacier area that indicated a previous warmer and wetter climate. Robert Scott's ill-fated 1912 South Pole expedition discovered fossilized leaves of glossopteris1, an extinct tree of the gymnosperm family. Similar fossils had previously been found in Africa, India, Australia and southern South America. This fact led the Austrian geologist Eduard Suess (1831-1914) to hypothesize in the late 19th century that those areas must formed a single land mass in the distant past (a supercontinent that he named Gondwanaland). Suess did not believe in the motion of continents, however; he thought that the separation into distinct landmasses had been caused by rising waters. (Suess is featured in Austria Scott 1454; see also a FDC and a maxicard). Scott's find gave more support to the idea of Gondwanaland and to the idea that Antarctica must have had a very different climate in the past. Other fossilized warm climate plants such as ferns1 have since been found in the polar regions. In addition, fossilized leaves of some other plants1 including the nothophagus1 tree have recently been found in Antarctica. Members of this species, known commonly as the southern beech, still grow in New Zealand, New Caledonia, southern Australia and southern South America. All these finds provide consistent support for the idea of continental drift and the resulting changes in climates of the moving landmasses.

Wegener and Köppen were unable to suggest a plausible physical process that could drive continental drift, so most scientists rejected their revolutionary theory. It was only in the 1960s that geophysical understanding advanced to the point where an updated theory, known as plate tectonics, became widely accepted. It is now known that new oceanic crust is created at "spreading centres" at oceanic rifts where material from the deeper mantle flows upward and forms underwater mountain ridges. The seafloor spreads away from the ridges, which in turn forces the motion of continents.

In the table below, philatelic items highlighted in pale yellow make explicit reference to climate change related to continental drift. The reference to climate change in all other items is implicit.

1Stamps depicting various finds of fossilized plants in the polar regions are included in the table below.

Ascension268 (Mi?)1980Continental drift and mid-Atlantic ridge
British Antarctic Territory86 (Mi88)1982"Continental drift and climatic change" (in text)
British Antarctic Territory87 (Mi89)
British Antarctic Territory88 (Mi90)
British Antarctic Territory89 (Mi91)
British Antarctic Territory90 (Mi92)
British Antarctic Territory91 (Mi93)
British Antarctic Territory86-91 fdcSix stamps and cachet on FDC
British Antarctic Territory86+89 fdcTwo stamps and cachet (different) on FDC
British Antarctic Territory157 (Mi160)1990Fossil leaf of gymnosperm family from Antarctica
British Antarctic Territory158 (Mi161)Fossil fern from Antarctica
British Antarctic Territory172 (Mi173)1991Nothofagus tree from late Cretaceous forest
British Antarctic Territory280 (Mi293)1999Crustal microplates of west Antarctica
British Antarctic Territory401 (Mi?)2008Fossil ferns from Snow and Alexander Islands in Antarctica
British Antarctic Territory402 (Mi?)
British Antarctic Territory403 (Mi?)
British Antarctic Territory404 (Mi?)
British Antarctic Territory401-404 fdcFour stamps and cachet on FDC
CroatiaNoneCachet on cover1998
Faroe Islands513 (Mi?)MS6 (513 (a-f))2009Faroe Islands geology - illustration of mid-Atlantic ridge and seafloor spreading
French Southern and Antarctic TerritoriesC97 (Mi?)1987Continental drift
Germany (Berlin)9N451 (Mi616)1980Wegener and continental drift
Germany (Berlin)9N451 fdcStamp and cancel on FDC
Germany (Berlin)9N451 maxiMaxicard
Germany (Berlin)9N451 scCancel on souvenir card
Germany (East)2091 (Mi2425)1980Wegener and continental drift
Germany (East)2091 coverStamp on cover1980Wegener and continental drift
Greenland533 (Mi?)2009Schizoneura carcinoides fossil conifer needles from Greenland
India1623 (Mi?)1997Glossopteris fossil leaf from India
India1622-1625 fdcOne of four stamps on FDC
Korea (North)3585 (Mi3881-3885)In stamps d and e of MS5 (3585 (a-e))1996Earth eras with continental drift illustrated from Mesozoic to Cenozoic (last two stamps)
Korea (North)3585 fdcMS5 on FDC
Mongolia1145 (Mi?)SS11980"Continental drift" (in text)
St. Vincent2764f (Mi?)One of MS18 (2764 (a-r + label))1999Wegener and continental drift
Somalia582 (Mi?)1987Somali plate and continental drift in area of East Africa, Arabian Peninsula and India, from 160 million years ago to present
Somalia583 (Mi?)
Somalia584 (Mi?)
Somalia585 (Mi?)
Somalia585a (Mi?)MS2 (584-585)
South AfricaNone(Red rubber-stamp) cachet on cover1981Continental drift
South AfricaNone(Purple rubber-stamp) cachet on cover1983Continental drift
South Africa813 (Mi828)1991du Toit and "continental drift/plate tectonics" (in maxicard text)
South Africa813 maxiStamp and cancel and cachet on maxicard
South Africa810-813 fdcOne of three stamps on FDC
South AfricaKM3502.5 cents (? coin)2007
Tristan da Cunha283 (Mi?)1980Mid-Atlantic ridge
Zambia98 (Mi101)1973Glossopteris fossil leaf from Zambia
Volcanic effects
 

Some Major Volcanic Eruptions and their Climatic Effects

Major volcanic eruptions have a temporary cooling effect because the material ejected into the upper atmosphere circulates some years and reflects or absorbs solar radiation, which reduces the amount of energy reaching the ground. In extreme cases, the effect can be termed a "volcanic winter". Gases and material ejected into the lower atmosphere can also have significant effects.

The Volcanic Explosivity Index (VEI) is a measure of the intensity of volcanic eruptions. See http://en.wikipedia.org/wiki/Volcanic_Explosivity_Index. Large eruptions can affect the climate temporarily (for a few years). The eruptions described below, with VEIs of 6 or greater, had measurable effects on the climate. Philatelic items that feature those volcanoes are included in the table below.

Laki (VEI 6)

The eruption of Laki (in Iceland, the event is known as the Skaftáreldar, or the Skaftá fires) lasted from June 1783 to February 1784. In the second half of 1783, a persistent haze referred to as a "dry fog" (in modern terms characterized as a "stratospheric sulphate aerosol veil") covered Europe, and was observed to be the densest such fog since the eruption of another volcano, Eldgjá, in 934 AD. The following winter (1783-1784) was very cold both in Europe and in eastern North America. Benjamin Franklin, who was living in Paris at the time (he was the first American ambassador to France) saw the effects for himself and concluded that the eruption could be the cause of the dry fog and the subsequent cold weather. Several years of climate extremes followed in Europe, with the eruption as one probable cause.

Tambora (VEI 7)

Tambora (Indonesia) erupted in April 1815. It was the largest volcanic eruption in recorded history. As a result, European and North American weather was so cold that it came to be known as the "Year without Summer", during which there were crop failures, losses of livestock and an eventual food shortage and famine. Average global temperatures decreased (possibly by up to 0.7°C) after the eruption, and research has shown that 1816 was the coldest northern hemisphere year since around 1400, with the exception of 1601 (which itself followed a major volcanic eruption, that of Huaynaputina in Peru). As in Europe in 1783 after the eruption of Laki, a persistent "dry fog" occurred after the eruption of Tambora, this time over the northeastern US. China also experienced a major cold temperature period after the Tambora eruption.

Krakatoa (VEI 6)

Krakatoa (Indonesia) began to erupt in May 1883 and was destroyed in the final massive eruption on 27 August 1883. The material ejected into the upper atmosphere resulted in spectacular sunsets around the world, and fast-moving plumes of dust tracked by weather watchers in the low latitudes became known as the "equatorial smoke stream" and were the first hints of strong narrow currents of upper winds that came to be known as jet streams. In the year following the eruption, global temperatures are estimated to have fallen by up to 1°C, and it was called another "year without summer" in some parts of the world. The temperatures did not return to normal until several years later.

Pinatubo (VEI 6)

Pinatubo (Philippines) erupted massively in June 1991, with worldwide effects. The amounts of aerosols and dust ejected into the stratosphere were probably greater than in any other volcanic eruption since that of Krakatoa in 1883. It has been estimated that as a result of this eruption global average temperatures dropped by around 0.4°C. This value is within the range of normal climatic variation, but is based on global circulation models (GCMs) in which other sources of temperature variability have been removed. Stratospheric temperatures, which have less natural variability, were measured to rise after the volcano. This was due to absorption of sunlight by the dust and aerosols, which persisted for three years. Another likely effect of the eruption was an increase in stratospheric ozone destruction, caused by volcanic aerosols eventually spreading to polar latitudes and catalyzing ozone-destroying catalyzing reactions. The largest ever Antarctic ozone hole was measured at the end of 1993 by the TOMS instrument aboard Nimbus-7. It is possible that the aerosols from the Pinatubo eruption contributed to the size of that hole.

Iceland557 (Mi?)1983"Skaftáreldar 1783" (in text); 200th anniv. eruption of Laki
Iceland557 fdcStamp on FDC
Indonesia1204 (Mi1110)1983100th anniv. eruption of Krakatoa
Indonesia1205 (Mi1111)
Indonesia2028 (Mi?)Two of MS10 (2032a (2x 2028-2032))2003(120th anniv. eruption of Krakatoa)
Indonesia2030 (Mi?)Tambora
Indonesia2028-2029+2031 fdcOne of three stamps on FDCKrakatoa
Indonesia2030+2032 fdcOne of two stamps on FDCTambora
Mali1032e (Mi2429)One of MS9 (1032 (a-i))1999Krakatoa
Micronesia651c (Mi?)One of MS4 (651 (a-d))2005Krakatoa
PhilippinesRA1 (Mi?)1992Mt Pinatubo fund; lahar mudflow
PhilippinesRA2 (Mi?)From block of 4 (RA5a (RA2-RA5))Mt Pinatubo fund; Pinatubo erupting
PhilippinesRA3 (Mi?)Mt Pinatubo fund; cattle searching for food
PhilippinesRA3+2144 coverOne of two stamps and address on cover"Mt Pinatubo surcharge paid" (in text)
PhilippinesRA4 (Mi?)From block of 4 (RA5a (RA2-RA5))Mt Pinatubo fund; evacuation camp
PhilippinesRA5 (Mi?)Mt Pinatubo fund; clearing ash
RomaniaNonePrinted stamp and cachet on postal card2011Laki
TogoUnknown a (Mi?)From MS4 (a-d)2011Krakatoa
United Nations (New York, Geneva, and Vienna)636a+243a+159a fdc1 (Mi? fdc1)One of 3 strips of 4 on FDC (636a+243a+159a)1993Volcanic eruption (in a climate change context)
United Nations (New York, Geneva, and Vienna)636a+243a+159a fdc2 (Mi? fdc2)One of 3 strips of 4 and cachet on FDC (636a+243a+159a)
United Nations (New York, Geneva, and Vienna)636a+243a+159a folderOne of 3 strips of 4 on FDC folder, also folder cover
United Nations (Geneva)243a fdc (Mi239-242 fdc)Cachet on FDC1993Volcanic eruption (in a climate change context)
United Nations (Vienna)159a (Mi156-159)Strip of 4 (156-159), from MS24 (159b (6x (156-159))1993Volcanic eruption (in a climate change context)
United Nations (Vienna)159a fdc1Strip of 4 and cachet on FDC
United Nations (Vienna)159a fdc2Strip of 4 on FDC
United Nations (Vienna)159a maxi1Maxicard
United Nations (Vienna)159a maxi2Maxicard (different cancels)
Ocean effects
FranceUnlisted booklet (Mi?)Booklet of 10 "Save the Oceans" personalized stamps sponsored by the Maud Fontenoy Foundation, with booklet cover2010"ocean currents move heat from the tropics to cooler regions of the globe" (in French text in one of the boxes in left margin)
Marshall Islands678 (BL24)SS11998"drought brought on by El Niño" (in text)
Micronesia297 (BL40)SS11998El Niño
Micronesia298 (BL41)SS1
New Zealand2172 (Mi?)From block of 6 (2172-2177)2008The Gisborne drought depicted in the stamp was the result of the strong 1997-1998 El Niño that brought drought conditions to many parts of the western south Pacific
New Zealand2172-2177 fdc1One of six stamps on FDC, also back
New Zealand2172-2177 fdc2One of six stamps on FDC (different, available only in a special limited edition album, below)
New Zealand2172-2177_albumLimited edition album, with page containing MS5 (2177a (2172-2177))
Peru1423 (Mi1938)2004Sea Surface Temperature (SST) anomaly chart illustrating El Niño conditions; "impacts of the climatic anomalies associated [with] El Niño … such as intense precipitation and floods, drought, fires and freezes, infectious illnesses, [all] can have a much bigger duration" (in folder text)
Peru1423 folderFDC folder, also inside, and back
United StatesNone(Printed) cachet on SeaWiFS/OrbView-2 launch cover1997Study of the role of the Earth's oceans in the carbon cycle and of the impact of phytoplankton on global climate.
United StatesNone(Mission-57) cachet on Jason-2 launch cover, also back2008Sea Surface Temperature (SST) anomaly chart over Pacific, probably illustrating La Niña conditions
Forests and climate
TuvaluUnknown 1 (Mi?)2012"Plant a tree to help reduce greenhouse gases" (in text)
Climate records from proxies:
Ice cores
Australia1182 (Mi?)1990Ice coring and glaciological studies, joint Australia-Russia
Australia1182-1183 fdcOne of two stamps on FDC
Australia1183aOn one of MS2 (1182-1183)
Australia1183a fdcMS2 on FDC
Australia + Russia1182-1183 + Russia 5902-5903 fdcDual-country FDC1990Ice coring and glaciological studies, joint Australia-Russia
Australia + Russia1182-1183+1183a + Russia 5902-5903 folderDual-country folder
Australian Antarctic TerritoryL141 (Mi174)2008"Glaciology" (and ice coring)
BelgiumB800 (Mi?)In (lower-left) margin of SS1, also detail1966
BelgiumB797-B800+B800 stamp folderSS1 in FDC folder
British Antarctic Territory236 (Mi246)1996
British Antarctic Territory235-238 fdc1One of four stamps on FDC
British Antarctic Territory235-238 fdc2One of four stamps on FDC (different)
British Antarctic Territory281 (Mi294)1999
British Antarctic Territory343 (Mi381-382)Pair (343 (a-b))2004Long term temperature record from EPICA Dome C ice cores
British Antarctic Territory343cMS20 (10x (343 (a-b)))
British Antarctic Territory342-344 fdcOne of three pairs of stamps on FDC
French Southern and Antarctic Territories105 (Mi182)1984"Glaciologie - forage" (ice coring and glaciology)
French Southern and Antarctic Territories106 (Mi183)
French Southern and Antarctic TerritoriesC145 (Mi379)1998EPICA Dome C ice coring program (the ice cores provided a long term temperature record)
French Southern and Antarctic TerritoriesC145 fdcStamp and cancel and cachet on FDC
New Zealand793 (Mi891)1984
New Zealand794a (Mi889-892)MS4 (791-794)
New Zealand794a cover1MS4 on cover1985
New Zealand794a cover2MS4 on cover (different)
Russia (USSR)5902 (Mi6095)1990Ice coring and glaciological studies, joint Australia-Russia
Russia (USSR)5902-5903 fdcOne of two stamps on FDC
Russia (USSR)5903a (BL213)MS2 (5902-5903)
Russia (USSR)5903a fdcMS2 on FDC
Russia5902 cover (Mi6095 cover)Cachet on cover, also detail1991Ice coring and glaciological studies, joint Australia-Russia
Russia + Australia5902-5903 + Australia 1182-1183 fdcDual-country FDC1990Ice coring and glaciological studies, joint Australia-Russia
Russia + Australia5902-5903 + Australia 1182-1183+1183a folder.jpgDual-country folder
Sweden1749 (Mi1553)One of booklet pane of 6 (1754a (1749-1754)), with booklet cover1989"Climate changes studied in ice cores from East Greenland" (in text)
United StatesNoneCachet on cover1983IAGP; "Forage/sondage climatopique Pôle Sud" (South Pole ice coring for climate research)
Marine sediments and coring
French Southern and Antarctic TerritoriesC97 (Mi?)1987Ocean floor coring (for studies of climate and climate continental drift)
French Southern and Antarctic TerritoriesC116 (Mi278A)
iC116 (Mi278B)
One of strip of 2 (C116a (C115-C116 + label))
One of imperforate strip of 2 (iC116a (iC115-iC116 + label))
1991"Paléoclimatologie sédimentaire"; "Évolution des climats" (in cachet text)
French Southern and Antarctic TerritoriesC116a fdc1One of strip of 2 and cachet on FDC
French Southern and Antarctic TerritoriesC116a fdc2One of strip of 2 and cachet (different) on FDC
French Southern and Antarctic TerritoriesC116a fdc3One of strip of 2 and cachet (different) on FDC
French Southern and Antarctic TerritoriesC116a scSouvenir card
French Southern and Antarctic Territories196 (Mi?)1994"Carottage en mer" (ocean floor coring)
Micronesia296 (BL39)In (right) margin of SS11998Ocean floor coring; "sea bottom sediment contains the history of the Earth's environment"
New ZealandNonePersonalized stamp2007ANDRILL1 program; (ocean floor sediment coring for past climate changes)
New ZealandNone coverThree personalized stamps and (black rubber-stamp) cachet on cover
New ZealandNonePersonalized stamp (different)
United StatesNone(Yourstamps) personalized postage2007ARISE (ANDRILL1 Research Immersion for Science Educators) program
United StatesNone(Yourstamps) personalized postage (different value)
United StatesNone(Yourstamps) personalized postageANDRILL1 program; "Coring for past climate changes"
United StatesNone(Yourstamps) personalized postage (different value)
United StatesNone(Yourstamps) personalized postageANDRILL1 program; (ocean floor sediment coring for past climate changes)
United StatesNone(Yourstamps) personalized postage (different value)
United StatesNone(Yourstamps) personalized postage
United StatesNone(Yourstamps) personalized postage (different value)
United StatesNone(Zazzle) personalized postage2007ANDRILL1 program; (ocean floor sediment coring for past climate changes)
United StatesNone(Zazzle) personalized postage (different)
United StatesNoneCachet on postcard2007ANDRILL1 program; (ocean floor sediment coring for past climate changes); "The ANDRILL1 Program drills deep into Antarctic sediments to reveal this continent's past glacial history and to predict Earth's future climate."
Tree rings (dendrochronology)
No postal items available yet

1ANDRILL (ANtarctic geological DRILLing) is a multinational project whose goal is to obtain ocean floor sediment cores from various areas around Antarctica that will help define how fast, how large, and how frequent were past glacial and interglacial climate changes in the Antarctic region.


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