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Dramatically increased rate of observed hot record breaking in recent Australian temperatures - Lewis - 2015 - Geophysical Research Letters - Wiley Online Library
Lewis and King 2015: Persistent extreme temperatures were observed in Australia during 2012–2014. We examine changes in the rate of hot and cold record breaking over the observational record for Australia‐ and State‐wide temperatures. The number of new hot (high‐maximum and high‐minimum temperatures) temperature records increases dramatically in recent decades, while the number of cold records decreases. In a stationary climate, cold and hot records are expected to occur in equal frequency on longer than interannual time scales; however, during 2000–2014, new hot records outnumber new cold records by 12 to one on average. Coupled Model Intercomparison Project phase 5 experiments reveal increased hot temperature record breaking occurs in simulations that impose anthropogenic forcings but not in natural forcings‐only experiments. This disproportionate hot to cold record breaking rates provides a useful indicator of nonstationarity in temperatures, which is related to the underlying mean observed Australian warming trend of 0.9°C since high‐quality records began in 1910.
australia  Climate_Science_study  heatwaves  temperatures  attribution 
5 weeks ago by huntercutting
How Construction Workers Can Beat The Cold Weather
The dramatic change in temperature does not only cause a lot of people to become sick, but it creates hazardous outdoor working conditions. The good news is that there are plenty of steps site managers and construction workers can take to beat the cold temperatures and stay safe.
cold  temperatures  safe 
november 2018 by Adventure_Web
Quantification of ocean heat uptake from changes in atmospheric O 2 and CO 2 composition | Nature
Resplandy et al 2018: The ocean is the main source of thermal inertia in the climate system1. During recent decades, ocean heat uptake has been quantified by using hydrographic temperature measurements and data from the Argo float program, which expanded its coverage after 20072,3. However, these estimates all use the same imperfect ocean dataset and share additional uncertainties resulting from sparse coverage, especially before 20074,5. Here we provide an independent estimate by using measurements of atmospheric oxygen (O2) and carbon dioxide (CO2)—levels of which increase as the ocean warms and releases gases—as a whole-ocean thermometer. We show that the ocean gained 1.33 ± 0.20 × 1022 joules of heat per year between 1991 and 2016, equivalent to a planetary energy imbalance of 0.83 ± 0.11 watts per square metre of Earth’s surface. We also find that the ocean-warming effect that led to the outgassing of O2 and CO2 can be isolated from the direct effects of anthropogenic emissions and CO2 sinks. Our result—which relies on high-precision O2 measurements dating back to 19916—suggests that ocean warming is at the high end of previous estimates, with implications for policy-relevant measurements of the Earth response to climate change, such as climate sensitivity to greenhouse gases7 and the thermal component of sea-level rise8.
SLR  Climate_Science_study  oceans  temperatures  ECS 
october 2018 by huntercutting
Prepare Your Fence for Fall Temperatures and Winter Weather with these Easy Tips
Ensure that your fence is well-prepared for fall temperatures and winter weather with these easy tips.
fall  temperatures  prepare 
october 2018 by Adventure_Web
Maximum warming occurs about one decade after a carbon dioxide emission - IOPscience
Ricke and Caldeira 2014: It is known that carbon dioxide emissions cause the Earth to warm, but no previous study has focused on examining how long it takes to reach maximum warming following a particular CO2 emission. Using conjoined results of carbon-cycle and physical-climate model intercomparison projects (Taylor et al 2012, Joos et al 2013), we find the median time between an emission and maximum warming is 10.1 years, with a 90% probability range of 6.6–30.7 years. We evaluate uncertainties in timing and amount of warming, partitioning them into three contributing factors: carbon cycle, climate sensitivity and ocean thermal inertia. If uncertainty in any one factor is reduced to zero without reducing uncertainty in the other factors, the majority of overall uncertainty remains. Thus, narrowing uncertainty in century-scale warming depends on narrowing uncertainty in all contributing factors. Our results indicate that benefit from avoided climate damage from avoided CO2 emissions will be manifested within the lifetimes of people who acted to avoid that emission. While such avoidance could be expected to benefit future generations, there is potential for emissions avoidance to provide substantial benefit to current generations.
Climate_Science_study  temperatures  CarbonBudget 
september 2018 by huntercutting
Vape Temps - VapeNation
Table with temperatures and effects
weed  temperatures 
september 2018 by jeffroush

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