Lonnie G Thompson
Biographic Data
| ID | 78370 |
|---|---|
| NAME | Lonnie G Thompson |
| GIVEN NAMES | Lonnie G |
| FAMILY NAME | Thompson |
| SIGNATURE | THOMPSON L G |
| AFFILIATIONS | The Ohio State University |
| ORCID | 0000-0001-5371-2579 |
| VERIFIED | Yes |
| TOTAL WORKS | 17 |
| TOTAL CITATIONS | 79 |
| AUTHOR COUNT | 17 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1982 |
| LATEST PUBLICATION YEAR | 2023 |
| H-INDEX | 3 |
Contribution of biomass burning to black carbon deposition on Andean glaciers
Andean glaciers have melted rapidly since the 1960s. While some melting is likely due to anthropogenic climate change driven by increasing greenhouse gases, deposition of light-absorbing particles such as black carbon (BC) may also play a role. We hypothesize that BC from fires in the Amazon Basin and elsewhere may be deposited on Andean glaciers, reducing the surface albedo and inducing further melting. Here we investigate the role of BC deposit…
Large-scale circulation dominated precipitation variation and its effect on potential water availability across the Tibetan Plateau
The large-scale circulation, Indian summer monsoon (ISM), has a strong influence on the Tibetan Plateau (TP) since its onset and intensity have profound impacts on regional precipitation, which then can supply water for glaciers, lakes, rivers and social demands. Weakening monsoon intensity and longer monsoon duration seem contradictory, as a weaker monsoon tends to produce less precipitation, while a longer duration increases the probability of …
Late-Holocene Indian summer monsoon variability revealed from a 3300-year-long lake sediment record from Nir’pa Co, southeastern Tibet
Sedimentological and geochemical results from Nir’pa Co, an alpine lake on the southeastern Tibetan Plateau, detail late-Holocene Indian summer monsoon (ISM) hydroclimate during the last 3300 years. Constrained by modern calibration, elevated silt and lithics and low sand and clay between 3.3 and 2.4 ka and 1.3 ka and the present indicate two pluvial phases with lake levels near their current overflow elevation. Between 2.4 and 1.3 ka, a sharp in…
Recently exposed vegetation reveals Holocene changes in the extent of the Quelccaya Ice Cap, Peru
Radiocarbon dating of well-preserved, in-place vegetation exposed by the retreating Quelccaya Ice Cap of southeastern Peru constrains the last time the ice cap's extent was smaller than at present. Seventeen plant samples from two sites along the central western margin collectively date to 4700 and 5100 cal yr BP and strongly indicate that current ice cap retreat is unprecedented over the past ∼ 5 millennia. Seventeen vegetation samples interbedd…
Ice core evidence for asynchronous glaciation on the Tibetan Plateau
Ice-Core Pollen Record of Climatic Changes in the Central Andes during the last 400 yr
This paper presents a high-resolution ice-core pollen record from the Sajama Ice Cap, Bolivia, that spans the last 400 yr. The pollen record corroborates the oxygen isotopic and ice accumulation records from the Quelccaya Ice Cap and supports the scenario that the Little Ice Age (LIA) consisted of two distinct phases "a wet period from AD 1500 to 1700, and a dry period from AD 1700 to 1880. During the dry period xerophytic shrubs expanded to repl…
Kilimanjaro Ice Core Records
Six ice cores from Kilimanjaro provide an ∼11.7-thousand-year record of Holocene climate and environmental variability for eastern equatorial Africa, including three periods of abrupt climate change: ∼8.3, ∼5.2, and ∼4 thousand years ago (ka). The latter is coincident with the “First Dark Age,” the period of the greatest historically recorded drought in tropical Africa. Variable deposition of F – and Na + during the African Humid Period suggests …
Tropical Climate Instability
An ice core record from the Guliya ice cap on the Qinghai-Tibetan Plateau provides evidence of regional climatic conditions over the last glacial cycle. 36 Cl data suggest that the deepest 20 meters of the core may be more than 500,000 years old. The δ 18 O change across Termination I is ∼5.4 per mil, similar to that in the Huascarán (Peru) and polar ice cores. Three Guliya interstadials (Stages 3, 5a, and 5c) are marked by increases in δ 18 O va…
Late Glacial Stage and Holocene Tropical Ice Core Records from Huascarán, Peru
Two ice cores from the col of Huascarán in the north-central Andes of Peru contain a paleoclimatic history extending well into the Wisconsinan (Würm) Glacial Stage and include evidence of the Younger Dryas cool phase. Glacial stage conditions at high elevations in the tropics appear to have been as much as 8° to 12°C cooler than today, the atmosphere contained about 200 times as much dust, and the Amazon Basin forest cover may have been much less…
Late Holocene ice core records of climate and environment from the tropical Andes, Peru
A 1 500-year history of climatic and environmental variations from the Quelccaya ice cap (13o56'S, 70o50'W, 5 670 m a.s.l.) is compared to a similar 3 000-year ice core record from the col of Huascarán (9o06'S, 77o 36'W, 6 048 m a.s.l.). The parameters which are presented are oxygen isotopic ratios (δ18O), considered to be indicative of temperature, insoluble dust, and (for Huascarán only) nitrate concentrations (NO3) which is indicative of veget…
Glacial records of Global climate
Reconstructing the Paleo Enso records from tropical and subtropical ice records
Reconstruction des registres de PaléoENSO à partir de carottes de glace tropicales et sub-tropicales Résumé La variabilité interannuelle du climat est une des principales caractéristiques du système climatique, en particulier dans les régions tropicales et sub-tropicales. Il est essentiel de savoir si l'empreinte de la variabilité interannuelle dans le registre climatique est affectée par un changement dans l'état moyen du système climatique. Cet…
Temporal and spatial variations of climate in China during the last 10 000 years
Archaeological, geological, historical, tree-ring and instrumental data indicate that the last 10 000 years were characterized in China by climatic variations at various temporal and spatial scales. The period from 10 000 to 9000 BP was one of increasing temperature. The Holocene 'Optimal Period' occurred approximately between 9000 and 3000 BP, within which there were two major cool episodes around 7300 amd 5700 BP and one minor cool episode arou…
Cultural impacts of severe droughts in the prehistoric Andes
Late in the sixth century, Andean peoples experienced major cultural upheavals, including a notable settlement shift of the classic Mochica culture on the northern Peruvian coast. A recently established annual precipitation record derived from ice cores from the Quelccaya glacier in southern Peru allows assessment of the possible role of climatic disturbances in northern Peru. Both areas are in the same tropical climatic regime. A comparison betw…
Wisconsin/W rm glacial stage ice in the subtropical dunde ice cap, China
A 1500-Year Record of Tropical Precipitation in Ice Cores from the Quelccaya Ice Cap, Peru
Two ice cores, covering 1500 years of climatic information, from the summit (5670 meters) of the tropical Quelccaya ice cap, in the Andes of southern Peru, provide information on general environmental conditions including droughts, volcanic activity, moisture sources, temperature, and glacier net balance. The net balance record reconstructed from these cores reflects major precipitation trends for the southern Andes of Peru. These records indicat…
Nine Centuries of Microparticle Deposition at the South Pole
The analysis of microparticles in a 101-m core from Amundsen-Scott South Pole Station, Antarctica has revealed a substantial increase in total particle concentration between approximately 1450 and 1850 A.D., a period encompassing the latest neoglacial interval or Little Ice Age. It is likely that this reflects a simultaneous increase in the concentration of particulate material in the Antarctic atmosphere. This is important climatologically, for …
Cultural impacts of severe droughts in the prehistoric Andes
Late in the sixth century, Andean peoples experienced major cultural upheavals, including a notable settlement shift of the classic Mochica culture on the northern Peruvian coast. A recently established annual precipitation record derived from ice cores from the Quelccaya glacier in southern Peru allows assessment of the possible role of climatic disturbances in northern Peru. Both areas are in the same tropical climatic regime. A comparison betw…
Late-Holocene Indian summer monsoon variability revealed from a 3300-year-long lake sediment record from Nir’pa Co, southeastern Tibet
Sedimentological and geochemical results from Nir’pa Co, an alpine lake on the southeastern Tibetan Plateau, detail late-Holocene Indian summer monsoon (ISM) hydroclimate during the last 3300 years. Constrained by modern calibration, elevated silt and lithics and low sand and clay between 3.3 and 2.4 ka and 1.3 ka and the present indicate two pluvial phases with lake levels near their current overflow elevation. Between 2.4 and 1.3 ka, a sharp in…
Temporal and spatial variations of climate in China during the last 10 000 years
Archaeological, geological, historical, tree-ring and instrumental data indicate that the last 10 000 years were characterized in China by climatic variations at various temporal and spatial scales. The period from 10 000 to 9000 BP was one of increasing temperature. The Holocene 'Optimal Period' occurred approximately between 9000 and 3000 BP, within which there were two major cool episodes around 7300 amd 5700 BP and one minor cool episode arou…
Nine Centuries of Microparticle Deposition at the South Pole
The analysis of microparticles in a 101-m core from Amundsen-Scott South Pole Station, Antarctica has revealed a substantial increase in total particle concentration between approximately 1450 and 1850 A.D., a period encompassing the latest neoglacial interval or Little Ice Age. It is likely that this reflects a simultaneous increase in the concentration of particulate material in the Antarctic atmosphere. This is important climatologically, for …
A 1500-Year Record of Tropical Precipitation in Ice Cores from the Quelccaya Ice Cap, Peru
Two ice cores, covering 1500 years of climatic information, from the summit (5670 meters) of the tropical Quelccaya ice cap, in the Andes of southern Peru, provide information on general environmental conditions including droughts, volcanic activity, moisture sources, temperature, and glacier net balance. The net balance record reconstructed from these cores reflects major precipitation trends for the southern Andes of Peru. These records indicat…
Wisconsin/W rm glacial stage ice in the subtropical dunde ice cap, China
Cultural impacts of severe droughts in the prehistoric Andes
Late in the sixth century, Andean peoples experienced major cultural upheavals, including a notable settlement shift of the classic Mochica culture on the northern Peruvian coast. A recently established annual precipitation record derived from ice cores from the Quelccaya glacier in southern Peru allows assessment of the possible role of climatic disturbances in northern Peru. Both areas are in the same tropical climatic regime. A comparison betw…
Reconstructing the Paleo Enso records from tropical and subtropical ice records
Reconstruction des registres de PaléoENSO à partir de carottes de glace tropicales et sub-tropicales Résumé La variabilité interannuelle du climat est une des principales caractéristiques du système climatique, en particulier dans les régions tropicales et sub-tropicales. Il est essentiel de savoir si l'empreinte de la variabilité interannuelle dans le registre climatique est affectée par un changement dans l'état moyen du système climatique. Cet…
Temporal and spatial variations of climate in China during the last 10 000 years
Archaeological, geological, historical, tree-ring and instrumental data indicate that the last 10 000 years were characterized in China by climatic variations at various temporal and spatial scales. The period from 10 000 to 9000 BP was one of increasing temperature. The Holocene 'Optimal Period' occurred approximately between 9000 and 3000 BP, within which there were two major cool episodes around 7300 amd 5700 BP and one minor cool episode arou…
Glacial records of Global climate
Late Glacial Stage and Holocene Tropical Ice Core Records from Huascarán, Peru
Two ice cores from the col of Huascarán in the north-central Andes of Peru contain a paleoclimatic history extending well into the Wisconsinan (Würm) Glacial Stage and include evidence of the Younger Dryas cool phase. Glacial stage conditions at high elevations in the tropics appear to have been as much as 8° to 12°C cooler than today, the atmosphere contained about 200 times as much dust, and the Amazon Basin forest cover may have been much less…
Late Holocene ice core records of climate and environment from the tropical Andes, Peru
A 1 500-year history of climatic and environmental variations from the Quelccaya ice cap (13o56'S, 70o50'W, 5 670 m a.s.l.) is compared to a similar 3 000-year ice core record from the col of Huascarán (9o06'S, 77o 36'W, 6 048 m a.s.l.). The parameters which are presented are oxygen isotopic ratios (δ18O), considered to be indicative of temperature, insoluble dust, and (for Huascarán only) nitrate concentrations (NO3) which is indicative of veget…
Tropical Climate Instability
An ice core record from the Guliya ice cap on the Qinghai-Tibetan Plateau provides evidence of regional climatic conditions over the last glacial cycle. 36 Cl data suggest that the deepest 20 meters of the core may be more than 500,000 years old. The δ 18 O change across Termination I is ∼5.4 per mil, similar to that in the Huascarán (Peru) and polar ice cores. Three Guliya interstadials (Stages 3, 5a, and 5c) are marked by increases in δ 18 O va…
Kilimanjaro Ice Core Records
Six ice cores from Kilimanjaro provide an ∼11.7-thousand-year record of Holocene climate and environmental variability for eastern equatorial Africa, including three periods of abrupt climate change: ∼8.3, ∼5.2, and ∼4 thousand years ago (ka). The latter is coincident with the “First Dark Age,” the period of the greatest historically recorded drought in tropical Africa. Variable deposition of F – and Na + during the African Humid Period suggests …
Ice-Core Pollen Record of Climatic Changes in the Central Andes during the last 400 yr
This paper presents a high-resolution ice-core pollen record from the Sajama Ice Cap, Bolivia, that spans the last 400 yr. The pollen record corroborates the oxygen isotopic and ice accumulation records from the Quelccaya Ice Cap and supports the scenario that the Little Ice Age (LIA) consisted of two distinct phases "a wet period from AD 1500 to 1700, and a dry period from AD 1700 to 1880. During the dry period xerophytic shrubs expanded to repl…
Ice core evidence for asynchronous glaciation on the Tibetan Plateau
Recently exposed vegetation reveals Holocene changes in the extent of the Quelccaya Ice Cap, Peru
Radiocarbon dating of well-preserved, in-place vegetation exposed by the retreating Quelccaya Ice Cap of southeastern Peru constrains the last time the ice cap's extent was smaller than at present. Seventeen plant samples from two sites along the central western margin collectively date to 4700 and 5100 cal yr BP and strongly indicate that current ice cap retreat is unprecedented over the past ∼ 5 millennia. Seventeen vegetation samples interbedd…
Late-Holocene Indian summer monsoon variability revealed from a 3300-year-long lake sediment record from Nir’pa Co, southeastern Tibet
Sedimentological and geochemical results from Nir’pa Co, an alpine lake on the southeastern Tibetan Plateau, detail late-Holocene Indian summer monsoon (ISM) hydroclimate during the last 3300 years. Constrained by modern calibration, elevated silt and lithics and low sand and clay between 3.3 and 2.4 ka and 1.3 ka and the present indicate two pluvial phases with lake levels near their current overflow elevation. Between 2.4 and 1.3 ka, a sharp in…
Contribution of biomass burning to black carbon deposition on Andean glaciers
Andean glaciers have melted rapidly since the 1960s. While some melting is likely due to anthropogenic climate change driven by increasing greenhouse gases, deposition of light-absorbing particles such as black carbon (BC) may also play a role. We hypothesize that BC from fires in the Amazon Basin and elsewhere may be deposited on Andean glaciers, reducing the surface albedo and inducing further melting. Here we investigate the role of BC deposit…
Large-scale circulation dominated precipitation variation and its effect on potential water availability across the Tibetan Plateau
The large-scale circulation, Indian summer monsoon (ISM), has a strong influence on the Tibetan Plateau (TP) since its onset and intensity have profound impacts on regional precipitation, which then can supply water for glaciers, lakes, rivers and social demands. Weakening monsoon intensity and longer monsoon duration seem contradictory, as a weaker monsoon tends to produce less precipitation, while a longer duration increases the probability of …
Geography (16 works) · Geology and Paleoclimatology Research (15 works) · Physical geography (14 works) · Climatology (12 works) · Ice core (11 works) · Climate change (8 works) · Geology (8 works) · Geology (7 works) · Holocene (7 works) · Pleistocene-Era Hominins and Archaeology (7 works)