scholarly journals History of Chemically and Radiatively Important Atmospheric Gases from the Advanced Global Atmospheric Gases Experiment (AGAGE)

2018 ◽  
Author(s):  
Ronald G. Prinn ◽  
Ray F. Weiss ◽  
Jgor Arduini ◽  
Tim Arnold ◽  
H. Langley DeWitt ◽  
...  
Keyword(s):  
Climate Change ◽  
Carbon Monoxide ◽  
Molecular Hydrogen ◽  
Sulfur Hexafluoride ◽  
Methyl Chloride ◽  
Montreal Protocol ◽  
Data Repository ◽  
Atmospheric Gases ◽  
Intergovernmental Panel ◽  
Important Species

Abstract. We present the organization, instrumentation, datasets, data interpretation, modeling, and accomplishments of the multinational, global atmospheric measurement program AGAGE (Advanced Global Atmospheric Gases Experiment). AGAGE is distinguished by its capability to measure globally, at high frequency and multiple sites, all the important species in the Montreal Protocol and all the important non-carbon dioxide (CO2) gases assessed by the Intergovernmental Panel on Climate Change (CO2 is also measured at several sites). The scientific objectives of AGAGE are important in furthering understanding of global chemical and climatic phenomena. They are to: (1) measure accurately the temporal and spatial distributions of anthropogenic gases that contribute the majority of reactive halogen to the stratosphere and/or are strong infrared absorbers [chlorocarbons, chlorofluorocarbons (CFCs), bromocarbons, hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs) and polyfluorinated compounds (perfluorocarbons (PFCs), nitrogen trifluoride (NF3), sulfuryl fluoride (SO2F2), and sulfur hexafluoride (SF6)), and use these measurements to determine the global rates of their emission and/or destruction (i.e. lifetimes); (2) measure accurately the global distributions and temporal behaviors and determine sources and sinks of non-CO2 biogenic-anthropogenic gases important to climate change and/or ozone depletion [methane (CH4), nitrous oxide (N2O), carbon monoxide (CO), molecular hydrogen (H2), methyl chloride (CH3Cl) and methyl bromide (CH3Br); (3) identify new long-lived greenhouse and ozone-depleting gases [e.g. SO2F2, NF3, heavy PFCs (C4F10, C5F12, C6F14, C7F16, and C8F18) and hydrofluoro-olefins (HFOs, e.g. CH2 = CFCF3) have been identified in AGAGE], initiate real-time monitoring of these new gases, and reconstruct their past histories from AGAGE, air-archive and firn-air measurements; (4) determine the average concentrations and trends of tropospheric hydroxyl radicals (OH) from the rates of destruction of atmospheric trichloroethane (CH3CCl3), HFCs and HCFCs, and estimates of their emissions; (5) determine from atmospheric observations and estimates of their destruction rates, the magnitudes, and distributions by region of surface sources/sinks of all measured gases; (6) provide accurate data on the global accumulation of many of these trace gases, that are used to test the synoptic/regional/global-scale circulations predicted by three-dimensional models; and (7) provide global and regional measurements of methane, carbon monoxide and molecular hydrogen, and estimates of hydroxyl levels, to test primary atmospheric oxidation pathways at mid-latitudes and the tropics. Network Information and Data Repository: http://agage.mit.edu/data or http://cdiac.esd.ornl.gov/ndps/alegage.html

scholarly journals History of chemically and radiatively important atmospheric gases from the Advanced Global Atmospheric Gases Experiment (AGAGE)

2018 ◽  
Vol 10 (2) ◽  
pp. 985-1018 ◽  
Author(s):  
Ronald G. Prinn ◽  
Ray F. Weiss ◽  
Jgor Arduini ◽  
Tim Arnold ◽  
H. Langley DeWitt ◽  
...  
Keyword(s):  
Climate Change ◽  
Carbon Monoxide ◽  
Molecular Hydrogen ◽  
Sulfur Hexafluoride ◽  
Montreal Protocol ◽  
Data Repository ◽  
Atmospheric Gases ◽  
Intergovernmental Panel ◽  
Important Species ◽  
Sources And Sinks

Abstract. We present the organization, instrumentation, datasets, data interpretation, modeling, and accomplishments of the multinational global atmospheric measurement program AGAGE (Advanced Global Atmospheric Gases Experiment). AGAGE is distinguished by its capability to measure globally, at high frequency, and at multiple sites all the important species in the Montreal Protocol and all the important non-carbon-dioxide (non-CO2) gases assessed by the Intergovernmental Panel on Climate Change (CO2 is also measured at several sites). The scientific objectives of AGAGE are important in furthering our understanding of global chemical and climatic phenomena. They are the following: (1) to accurately measure the temporal and spatial distributions of anthropogenic gases that contribute the majority of reactive halogen to the stratosphere and/or are strong infrared absorbers (chlorocarbons, chlorofluorocarbons – CFCs, bromocarbons, hydrochlorofluorocarbons – HCFCs, hydrofluorocarbons – HFCs and polyfluorinated compounds (perfluorocarbons – PFCs), nitrogen trifluoride – NF3, sulfuryl fluoride – SO2F2, and sulfur hexafluoride – SF6) and use these measurements to determine the global rates of their emission and/or destruction (i.e., lifetimes); (2) to accurately measure the global distributions and temporal behaviors and determine the sources and sinks of non-CO2 biogenic–anthropogenic gases important to climate change and/or ozone depletion (methane – CH4, nitrous oxide – N2O, carbon monoxide – CO, molecular hydrogen – H2, methyl chloride – CH3Cl, and methyl bromide – CH3Br); (3) to identify new long-lived greenhouse and ozone-depleting gases (e.g., SO2F2, NF3, heavy PFCs (C4F10, C5F12, C6F14, C7F16, and C8F18) and hydrofluoroolefins (HFOs; e.g., CH2 = CFCF3) have been identified in AGAGE), initiate the real-time monitoring of these new gases, and reconstruct their past histories from AGAGE, air archive, and firn air measurements; (4) to determine the average concentrations and trends of tropospheric hydroxyl radicals (OH) from the rates of destruction of atmospheric trichloroethane (CH3CCl3), HFCs, and HCFCs and estimates of their emissions; (5) to determine from atmospheric observations and estimates of their destruction rates the magnitudes and distributions by region of surface sources and sinks of all measured gases; (6) to provide accurate data on the global accumulation of many of these trace gases that are used to test the synoptic-, regional-, and global-scale circulations predicted by three-dimensional models; and (7) to provide global and regional measurements of methane, carbon monoxide, and molecular hydrogen and estimates of hydroxyl levels to test primary atmospheric oxidation pathways at midlatitudes and the tropics. Network Information and Data Repository: http://agage.mit.edu/data or http://cdiac.ess-dive.lbl.gov/ndps/alegage.html (https://doi.org/10.3334/CDIAC/atg.db1001).

One Atmosphere

2010 ◽  
Author(s):  
Peter Singer
Keyword(s):  
Climate Change ◽  
Scientific Evidence ◽  
Developed Countries ◽  
Montreal Protocol ◽  
Intergovernmental Panel ◽  
Policy Makers ◽  
Protective Shield ◽  
Third Assessment Report ◽  
The Developed Countries ◽  
Full Force

There can be no clearer illustration of the need for human beings to act globally than the issues raised by the impact of human activity on our atmosphere. That we all share the same planet came to our attention in a particularly pressing way in the 1970s when scientists discovered that the use of chlorofluorocarbons (CFCs) threatens the ozone layer shielding the surface of our planet from the full force of the sun's ultraviolet radiation. Damage to that protective shield would cause cancer rates to rise sharply and could have other effects, for example, on the growth of algae. The threat was especially acute to the world's southernmost cities, since a large hole in the ozone was found to be opening up each year over Antarctica, but in the long term, the entire ozone shield was imperiled. Once the science was accepted, concerted international action followed relatively rapidly with the signing of the Montreal Protocol in 1985. The developed countries phased out virtually all use of CFCs by 1999, and the developing countries, given a 10-year period of grace, are now moving toward the same goal. Getting rid of CFCs has turned out to be just the curtain raiser: the main event is climate change, or global warming. Without belittling the pioneering achievement of those who brought about the Montreal Protocol, the problem was not so difficult, for CFCs can be replaced in all their uses at relatively little cost, and the solution to the problem is simply to stop producing them. Climate change is a very different matter. The scientific evidence that human activities are changing the climate of our planet has been studied by a working group of the Intergovernmental Panel on Climate Change (IPCC), an international scientific body intended to provide policy makers with an authoritative view of climate change and its causes. The group released its Third Assessment Report in 2001, building on earlier reports and incorporating new evidence accumulated over the previous five years. The report is the work of 122 lead authors and 515 contributing authors, and the research on which it was based was reviewed by 337 experts.

scholarly journals Effect of increased ambient temperature on seasonal generation number in Lucilia sericata (Diptera, Calliphoridae)

2021 ◽  
Vol 48 (2) ◽  
pp. 191-198
Author(s):  
Maksym V. Makaida ◽  
Oleksander Y. Pakhomov ◽  
Viktor V. Brygadyrenko
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Temperature Increase ◽  
Global Climate ◽  
Steppe Zone ◽  
Lucilia Sericata ◽  
Farm Animals ◽  
Intergovernmental Panel ◽  
Important Species ◽  
Average Temperature

Abstract Global climate change and, specifically, rising temperatures, may increase the number of generations of necrophagous insects. The common green bottle fly Lucilia sericata (Meigen, 1826) (Diptera, Calliphoridae) ranks among the most important cosmopolitan necrophagous insects that utilize corpses and cause myiasis in farm animals and humans. Based on the data simulations, the use of accumulated degree-hours enables to calculate the number of generations of this forensically important species of blowfly with a greater accuracy than before, considering short-term increases of temperature at the boundary of the cold and warm seasons. The number of generations of L. sericata has increased from 7.65 to 8.46 in the Ukrainian steppe zone over the last 15 years, while the active developmental period of this species has increased by 25 days due to earlier start in spring. The average temperature increase of 1 °C increased the number of generations of L. sericata by 0.85. With a global climate change following the Representative Concentration Pathway (RCP) 4.5 scenario (average temperature increase of 2.4 °C), adopted by the Intergovernmental Panel on Climate Change, by 2100 the number of generations of L. sericata in a simulated ecosystem will increase by 2.0 to 9.0 generations per year.

scholarly journals Global evidence of constraints and limits to human adaptation

2021 ◽  
Vol 21 (3) ◽  
Author(s):  
Adelle Thomas ◽  
Emily Theokritoff ◽  
Alexandra Lesnikowski ◽  
Diana Reckien ◽  
Kripa Jagannathan ◽  
...  
Keyword(s):  
Climate Change ◽  
Systematic Review ◽  
Behavioral Adaptation ◽  
Human Adaptation ◽  
Small Islands ◽  
Intergovernmental Panel ◽  
Natural Systems ◽  
Adaptation Response ◽  
Cultural Constraints ◽  
Global Evidence

AbstractConstraints and limits to adaptation are critical to understanding the extent to which human and natural systems can successfully adapt to climate change. We conduct a systematic review of 1,682 academic studies on human adaptation responses to identify patterns in constraints and limits to adaptation for different regions, sectors, hazards, adaptation response types, and actors. Using definitions of constraints and limits provided by the Intergovernmental Panel on Climate Change (IPCC), we find that most literature identifies constraints to adaptation but that there is limited literature focused on limits to adaptation. Central and South America and Small Islands generally report greater constraints and both hard and soft limits to adaptation. Technological, infrastructural, and ecosystem-based adaptation suggest more evidence of constraints and hard limits than other types of responses. Individuals and households face economic and socio-cultural constraints which also inhibit behavioral adaptation responses and may lead to limits. Finance, governance, institutional, and policy constraints are most prevalent globally. These findings provide early signposts for boundaries of human adaptation and are of high relevance for guiding proactive adaptation financing and governance from local to global scales.

scholarly journals Climate Change: Reversing the Past and Advancing the Future

AJIL Unbound ◽  
2021 ◽  
Vol 115 ◽  
pp. 80-85
Author(s):  
Daniel Bodansky
Keyword(s):  
Climate Change ◽  
Climate Change Policy ◽  
The United States ◽  
Paris Agreement ◽  
Montreal Protocol ◽  
Global Institutions ◽  
Change Policy ◽  
Global Action ◽  
Nationally Determined Contributions ◽  
Executive Action

After four years of not simply inaction but significant retrogression in U.S. climate change policy, the Biden administration has its work cut out. As a start, it needs to undo what Trump did. The Biden administration took a step in that direction on Day 1 by rejoining the Paris Agreement. But simply restoring the pre-Trump status quo ante is not enough. The United States also needs to push for more ambitious global action. In part, this will require strengthening parties’ nationally determined contributions (NDCs) under the Paris Agreement; but it will also require actions by what Sue Biniaz, the former State Department climate change lawyer, likes to call the Greater Metropolitan Paris Agreement—that is, the array of other international actors that help advance the Paris Agreement's goals, including global institutions such as the International Maritime Organization (IMO), the Montreal Protocol, and the World Bank, as well as regional organizations and non-state actors. Although the Biden administration can pursue some of these international initiatives directly through executive action, new regulatory initiatives will face an uncertain fate in the Supreme Court. So how much the Biden Administration is able to achieve will likely depend significantly on how much a nearly evenly-divided Congress is willing to support.

Collective Risk and Distributional Equity in Climate Change Bargaining

2021 ◽  
pp. 002200272110273
Author(s):  
Aseem Mahajan ◽  
Reuben Kline ◽  
Dustin Tingley
Keyword(s):  
Climate Change ◽  
Characteristic Feature ◽  
Economic Loss ◽  
Bargaining Model ◽  
Intergovernmental Panel ◽  
Climate Negotiations ◽  
Collective Risk ◽  
International Climate ◽  
Alternating Offers ◽  
International Climate Negotiations

International climate negotiations occur against the backdrop of increasing collective risk: the likelihood of catastrophic economic loss due to climate change will continue to increase unless and until global mitigation efforts are sufficient to prevent it. We introduce a novel alternating-offers bargaining model that incorporates this characteristic feature of climate change. We test the model using an incentivized experiment. We manipulate two important distributional equity principles: capacity to pay for mitigation of climate change and vulnerability to its potentially catastrophic effects. Our results show that less vulnerable parties do not exploit the greater vulnerability of their bargaining partners. They are, rather, more generous. Conversely, parties with greater capacity are less generous in their offers. Both collective risk itself and its importance in light of the recent Intergovernmental Panel on Climate Change report make it all the more urgent to better understand this crucial strategic feature of climate change bargaining.

scholarly journals Welcome to Hydrogen—A New International and Interdisciplinary Open Access Journal of Growing Interest in Our Society

Hydrogen ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 90-92
Author(s):  
George E. Marnellos ◽  
Thomas Klassen
Keyword(s):  
Climate Change ◽  
Open Access ◽  
Open Access Journal ◽  
Intergovernmental Panel ◽  
Ipcc Report

The 2018 Intergovernmental Panel on Climate Change (IPCC) report [...]

scholarly journals Application of a 1 km2 resolution model for climate change effects upon Benin and Nigeria vegetable agriculture

GEOMATICA ◽  
2019 ◽  
Vol 73 (4) ◽  
pp. 93-106
Author(s):  
Colin Minielly ◽  
O. Clement Adebooye ◽  
P.B. Irenikatche Akponikpe ◽  
Durodoluwa J. Oyedele ◽  
Dirk de Boer ◽  
...  
Keyword(s):  
Climate Change ◽  
Food Security ◽  
Field Trials ◽  
Development Planning ◽  
Climate Modelling ◽  
Intergovernmental Panel ◽  
Amaranthus Cruentus ◽  
Global Issues ◽  
Climate Change Effects

Climate change and food security are complex global issues that require multidisciplinary approaches to resolve. A nexus exists between both issues, especially in developing countries, but little prior research has successfully bridged the divide. Existing resolutions to climate change and food security are expensive and resource demanding. Climate modelling is at the forefront of climate change literature and development planning, whereas agronomy research is leading food security plans. The Benin Republic and Nigeria have grown and developed in recent years but may not have all the tools required to implement and sustain long-term food security in the face of climate change. The objective of this paper is to describe the development and outputs of a new model that bridges climate change and food security. Data from the Intergovernmental Panel on Climate Change’s 5th Regional Assessment (IPCC AR5) were combined with a biodiversity database to develop the model to derive these outputs. The model was used to demonstrate what potential impacts climate change will have on the regional food security by incorporating agronomic data from four local underutilized indigenous vegetables (Amaranthus cruentus L., Solanum macrocarpon L., Telfairia occidentalis Hook f., and Ocimum gratissimum L.). The model shows that, by 2099, there is significant uncertainty within the optimal recommendations that originated from the MicroVeg project. This suggests that MicroVeg will not have long-term success for food security unless additional options (e.g., new field trials, shifts in vegetable grown) are considered, creating the need for need for more dissemination tools.

scholarly journals The Evolution of Communicating the Uncertainty of Climate Change to Policymakers: A Study of IPCC Synthesis Reports

2021 ◽  
Vol 13 (5) ◽  
pp. 2466
Author(s):  
Tomas Molina ◽  
Ernest Abadal
Keyword(s):  
Climate Change ◽  
Economic Systems ◽  
Intergovernmental Panel ◽  
Call To Action ◽  
The Public ◽  
Level Of Confidence ◽  
Ipcc Report ◽  
Degree Of Certainty ◽  
History Of ◽  
Tackle Climate Change

The Intergovernmental Panel on Climate Change (IPCC) reports on climate change have served to alert both the public and policymakers about the scope of the predicted changes and the effects they would have on natural and economic systems. The first IPCC report was published in 1990, since which time a further four have been produced. The aim of this study was to conduct a content analysis of the IPCC Summaries for Policymakers in order to determine the degree of certainty associated with the statements they contain. For each of the reports we analyzed all statements containing expressions indicating the corresponding level of confidence. The aggregated results show a shift over time towards higher certainty levels, implying a “Call to action” (from 32.8% of statements in IPCC2 to 70.2% in IPCC5). With regard to the international agreements drawn up to tackle climate change, the growing level of confidence expressed in the IPCC Summaries for Policymakers reports might have been a relevant factor in the history of decision making.

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