Joseph R Mcconnell
Biographic Data
| ID | 2738722 |
|---|---|
| NAME | Joseph R Mcconnell |
| GIVEN NAMES | Joseph R |
| FAMILY NAME | Mcconnell |
| SIGNATURE | MCCONNELL J R |
| AFFILIATIONS | Desert Research Institute |
| ORCID | 0000-0001-9051-5240 |
| VERIFIED | Yes |
| TOTAL WORKS | 11 |
| TOTAL CITATIONS | 11 |
| WORKS AS AUTHOR | 11 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1999 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 2 |
Patagonia's Late Holocene lake sediments reveal no major black carbon sources for Antarctica
Organic layers preserved in ice patches
Growing season temperatures play a crucial role in controlling treeline elevation at regional to global scales. However, understanding of treeline dynamics in response to long-term changes in temperature is limited. In this study, we analyze pollen, plant macrofossils, and charcoal preserved in organic layers within a 10,400-year-old ice patch and in sediment from a 6000-year-old wetland located above present-day treeline in the Beartooth Mountai…
An Environmental and Climate History of the Roman Expansion in Italy
A first synthesis of available data for the period of Rome's expansion in Italy (about 400-29 b.c.e.) shows the role of climate and environment in early Roman imperialism. Although global indices suggest a warmer phase with relatively few short-term climate events occuring around the same time as the expansion, local data emphasize the highly variable timing and expression of these trends. This variability casts doubt on ideas of a unitary, histo…
Black carbon dominated dust in recent radiative forcing on Rocky Mountain snowpacks
The vast majority of surface water resources in the semi-arid western United States start as winter snowpack. Solar radiation is a primary driver of snowmelt, making snowpack water resources especially sensitive to even small increases in concentrations of light absorbing particles such as mineral dust and combustion-related black carbon (BC). Here we show, using fresh snow measurements and snowpack modeling at 51 widely distributed sites in the …
High-latitude fire activity of recent decades derived from microscopic charcoal and black carbon in Greenland ice cores
Warming temperatures and prolonged drought periods cause rapid changes of fire frequencies and intensities in high-latitude ecosystems. Associated smoke plumes deposit dark particles from incomplete combustion on the Greenland ice sheet that reduce albedo but also provide a detailed record of paleofire history. Here, we apply an emerging microscopic charcoal technique in combination with established black carbon and lead pollution measurements to…
Lead isotopic fingerprinting of 250-years of industrial era pollution in Greenland ice
Lead pollution recorded in Greenland ice indicates European emissions tracked plagues, wars, and imperial expansion during antiquity
Significance An 1100 BCE to 800 CE record of estimated lead emissions based on continuous, subannually resolved, and precisely dated measurements of lead pollution in deep Greenland ice and atmospheric modeling shows that European emissions closely varied with historical events, including imperial expansion, wars, and major plagues. Emissions rose coeval with Phoenician expansion and accelerated during expanded Carthaginian and Roman lead–silver …
Timing and climate forcing of volcanic eruptions for the past 2,500 years
Continental-scale temperature variability during the past two millennia
Historical (1850–2000) gridded anthropogenic and biomass burning emissions of reactive gases and aerosols
We present and discuss a new dataset of gridded emissions covering the historical period (1850–2000) in decadal increments at a horizontal resolution of 0.5° in latitude and longitude. The primary purpose of this inventory is to provide consistent gridded emissions of reactive gases and aerosols for use in chemistry model simulations needed by climate models for the Climate Model Intercomparison Program #5 (CMIP5) in support of the Intergovernmen…
Greenland ice sheet elevation change since 1978 from radar and laser altimetry 1
Repeat satellite radar altimetry gives estimates of surface elevation change for the southern half of the Greenland ice sheet between 1978 and 1988, and repeat aircraft laser altimetry gives equivalent estimates for 1993–1998. Over large areas away from the coast, the two data sets show the ice sheet to be in balance, but with localized zones of significant thickening or thinning. Rates of surface elevation change derived by comparing localized 1…
An Environmental and Climate History of the Roman Expansion in Italy
A first synthesis of available data for the period of Rome's expansion in Italy (about 400-29 b.c.e.) shows the role of climate and environment in early Roman imperialism. Although global indices suggest a warmer phase with relatively few short-term climate events occuring around the same time as the expansion, local data emphasize the highly variable timing and expression of these trends. This variability casts doubt on ideas of a unitary, histo…
High-latitude fire activity of recent decades derived from microscopic charcoal and black carbon in Greenland ice cores
Warming temperatures and prolonged drought periods cause rapid changes of fire frequencies and intensities in high-latitude ecosystems. Associated smoke plumes deposit dark particles from incomplete combustion on the Greenland ice sheet that reduce albedo but also provide a detailed record of paleofire history. Here, we apply an emerging microscopic charcoal technique in combination with established black carbon and lead pollution measurements to…
Patagonia's Late Holocene lake sediments reveal no major black carbon sources for Antarctica
Greenland ice sheet elevation change since 1978 from radar and laser altimetry 1
Repeat satellite radar altimetry gives estimates of surface elevation change for the southern half of the Greenland ice sheet between 1978 and 1988, and repeat aircraft laser altimetry gives equivalent estimates for 1993–1998. Over large areas away from the coast, the two data sets show the ice sheet to be in balance, but with localized zones of significant thickening or thinning. Rates of surface elevation change derived by comparing localized 1…
Historical (1850–2000) gridded anthropogenic and biomass burning emissions of reactive gases and aerosols
We present and discuss a new dataset of gridded emissions covering the historical period (1850–2000) in decadal increments at a horizontal resolution of 0.5° in latitude and longitude. The primary purpose of this inventory is to provide consistent gridded emissions of reactive gases and aerosols for use in chemistry model simulations needed by climate models for the Climate Model Intercomparison Program #5 (CMIP5) in support of the Intergovernmen…
Continental-scale temperature variability during the past two millennia
Timing and climate forcing of volcanic eruptions for the past 2,500 years
Lead pollution recorded in Greenland ice indicates European emissions tracked plagues, wars, and imperial expansion during antiquity
Significance An 1100 BCE to 800 CE record of estimated lead emissions based on continuous, subannually resolved, and precisely dated measurements of lead pollution in deep Greenland ice and atmospheric modeling shows that European emissions closely varied with historical events, including imperial expansion, wars, and major plagues. Emissions rose coeval with Phoenician expansion and accelerated during expanded Carthaginian and Roman lead–silver …
Black carbon dominated dust in recent radiative forcing on Rocky Mountain snowpacks
The vast majority of surface water resources in the semi-arid western United States start as winter snowpack. Solar radiation is a primary driver of snowmelt, making snowpack water resources especially sensitive to even small increases in concentrations of light absorbing particles such as mineral dust and combustion-related black carbon (BC). Here we show, using fresh snow measurements and snowpack modeling at 51 widely distributed sites in the …
High-latitude fire activity of recent decades derived from microscopic charcoal and black carbon in Greenland ice cores
Warming temperatures and prolonged drought periods cause rapid changes of fire frequencies and intensities in high-latitude ecosystems. Associated smoke plumes deposit dark particles from incomplete combustion on the Greenland ice sheet that reduce albedo but also provide a detailed record of paleofire history. Here, we apply an emerging microscopic charcoal technique in combination with established black carbon and lead pollution measurements to…
Lead isotopic fingerprinting of 250-years of industrial era pollution in Greenland ice
Organic layers preserved in ice patches
Growing season temperatures play a crucial role in controlling treeline elevation at regional to global scales. However, understanding of treeline dynamics in response to long-term changes in temperature is limited. In this study, we analyze pollen, plant macrofossils, and charcoal preserved in organic layers within a 10,400-year-old ice patch and in sediment from a 6000-year-old wetland located above present-day treeline in the Beartooth Mountai…
An Environmental and Climate History of the Roman Expansion in Italy
A first synthesis of available data for the period of Rome's expansion in Italy (about 400-29 b.c.e.) shows the role of climate and environment in early Roman imperialism. Although global indices suggest a warmer phase with relatively few short-term climate events occuring around the same time as the expansion, local data emphasize the highly variable timing and expression of these trends. This variability casts doubt on ideas of a unitary, histo…
Patagonia's Late Holocene lake sediments reveal no major black carbon sources for Antarctica
Geography (9 works) · Environmental Science (7 works) · Climatology (6 works) · Geology (6 works) · Geology and Paleoclimatology Research (6 works) · Physical geography (6 works) · Climate change (4 works) · Geology (4 works) · Oceanography (4 works) · Tree-ring climate responses (4 works)