Questions tagged [climate-change]

Questions about changes of the climate system, including questions about global warming.

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How would I simulate the effects of the Antarctic ice sheet being deleted on Earth's climate?

This is a follow-up to my question If its ice sheet were removed under modern atmospheric conditions, what climatic and ice-sheet equilibrium would be re-established over Antarctica?. As it has ...
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Providing Edgar emission using prep_chem_source for tracers (CO2-CH4)

I am working on CO2 and CH4 by WRF-CHEM, for providing my anthropogenic emission from Edgar data base, I'm going to use the Prep_chem_source App. I would like to use Edgar data emission (as my ...
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1answer
224 views

The Medieval Climatic Anomaly

Trying to understand this question, posted to me by a lecturer at University: "The Medieval Climatic Anomaly was distinctive in terms of the prevailing climates and forcing mechanisms operating ...
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What would it be like to live in an ice age?

If you were born in the most recent ice age, how different would your life be compared to how you live it today? Furthermore, if humans currently lived in an ice age, how would it affect life today?
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How will increased $\ce{CO2}$ affect forests and other vegetative areas?

Some researchers contend that increases in atmospheric CO2 (e.g., from anthropogenic emissions) will enhance plant growth in general. What is the level of that enhancement? Does the associated ...
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Has recent drop in airline flights over the US had a measurable warming effect as was found after 9/11?

I recall that after 9/11, when all US flights were canceled, there was a statistically detectable bump in average temperature. Something about jet contrails disappearing for 4 days. Has anything like ...
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1answer
220 views

Carbon's role in ocean acidification

This might seem like a basic question, but I'm a little confused about the effects on ocean acidification of different carbon compounds. I have heard that increased levels of carbon dioxide in the ...
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Correlation of Global Stratospheric AOD with Global Mean Temperature Anomaly

I'm trying to understand at a high level the relationship of aerosols to the global temperature and I'm new to these concepts. I have Stratoshperic mean global AOD data from: https://data.giss.nasa....
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1answer
60 views

Is lower tropospheric temperature relevant to measure global warming?

So according to this, Global temperature update Last month, the lower tropospheric temperature dropped 0.28 $\sf^\circ$C from February to March, which seems like a huge drop even if it's due to ...
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Tipping point theory, historical examples

This article gives a wonderful overview of tipping point theory, where a large system can be brought into a different state by a small perturbation. Searching online I have found mostly articles on ...
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What is the radiative forcing change associated with the Chinese 2020 COVID lockdown, and how does this affect the circulation?

The lockdown imposed in China and other countries in response to the COVID 19 pandemic has resulted in a dramatic change in air quality. Factories and transport systems have shut or continue at ...
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395 views

Can anyone explain the reason why CO$_2$ increases global temperatures (not the simplistic greenhouse analogy provided for public consumption)?

The greenhouse effect analogy of global warming is that atmospheric carbon dioxide CO$_2$ absorbs some of the infrared radiation emitted by the Earth, and redirects a portion of that radiation back ...
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How has the increase in global CO2 been attributed to an anthropogenic cause?

How has the increase in global CO2 been attributed to an anthropogenic cause? It would seem to me that this could be definitively determined on the basis of placing gas spectrometers on the exhausts ...
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Does climate change cause increase in CO2?

My main question is how do we know that increase in global temperature does not CAUSE an increase in CO2 concentration? I am trying to develop my mental model of what's going on for the climate ...
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USA and UK government report on plane emissions: 200% difference… which is right?

The report's respective ratio of 1 passenger car vs one long haul plane are 40% versus 110%: Image 1 (DEFRA): car = 171 plane = 195 (110%) Image 2 (EPA): car = 4096 plane = 1760 (40%) If the ...
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How do the slow and fast carbon cycles influence climate change?

I understand that the slow and fast carbon cycles are involved in the transport and storing of carbon, but how much of an influence do each of these cycles have on climate change, and how?
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941 views

To stop anthropogenic climate change, is it necessary to stop extracting petroleum and start pumping carbon under ground?

The amount of carbon (C) on Earth is constants. As far as i understand, all carbon that is not found in the atmosphere or the oceans in the form of CO2 or CO is stored either in the biomass (plants, ...
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Would pollution really take a lot of years to disappear from the atmosphere once people stop producing them?

From a comment in another question here, Oh, and a third factor: the added atmospheric CO2 does not magically go away once all the fossil fuels are burned. It will stay in the atmosphere for ...
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Will global warming lead to agriculture in the Arctic?

From what I understand, global warming will make growing food a lot harder in areas like the American Midwest because temperatures will become too high for most crops. At the same time, Arctic (and ...
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6k views

Debunking scientific paper “Has global warming already arrived?”

I read the IPCC reports, I know global warming is happening and is man-made. But as any skeptic should do periodically, I went to a few climate deniers websites and stumbled upon this peer-reviewed ...
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Is sea erosion the opposite of sea level rising (or rather, an adjacent phenomenon)?

Because I understand the mechanism of sea erosion as to take earth away from shorelines (and scatter it deep into the sea floor) and also to derive from climate crisis, I ask the following question: ...
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Is there any evidence for higher air pressures in the geological past?

I was curious about how the Earth's overall air pressure has varied over time, and tried to take a look around the internet. However, Google pops up a lot of sites with questionable science proposing ...
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Simple Climate Models that Predict Climate Change

I have a physics/maths background, and to me the most convincing evidence of a scientific fact is often a very simple model that gives reasonable results. A simplified model, which you can fully ...
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Looking for evidence against some points raised in Ivar Giaever's speech on climate change

I just listened to Ivar Giaever's speech on the climate change, and he raised following points which seem significant to me: Temperature differences y/y are very small compared to natural variation ...
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405 views

Did climate cool down when underground hydrocarbons stocks formed?

As far as I understand, the dominant theory of modern climate change says that recent warming is mainly caused by the massive burning of hydrocarbons that used to be stored in solid form mostly ...
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What would the average temperature be if there were no greenhouse effect from water vapor? [closed]

CO2, methane and other gases contribute to the greenhouse effect. But most of the greenhouse effect is caused by water vapour in the atmosphere. There is always a lot average moisture present, but it ...
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108 views

Why does climate change generate desertification?

According to IPCC: Climate change can be a significant driver of desertification and land degradation and can affect food production, thereby, influencing food security. Source: IPCC My ...
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193 views

How much heat was released from the 2019-2020 Australian bush fires?

How much heat was released from the 2019-2020 Australian bush fires? And is that likely to have a measurable impact on global atmospheric heat content? Maybe as a secondary question: How much impact ...
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112 views

Hydro-meteorological hazards vs climate extremes

I always saw the definitions of "hydro-meteorological hazards" and "climate extremes" as almost interchangeable in the climate change and natural hazards literature. The other day I was discussing ...
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200 views

What exactly is a published climatologist?

I am trying to get Gallup to do a scientific poll of published climatologists to greatly strengthen the credibility of the 97% consensus. This must start with very excellent formal definitions of ...
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How can we best objectively quantify climate change mitigation urgency? [closed]

Quantifying climate change mitigation urgency seems to have three aspects: (1) Green House Gas reduction targets required to meet a specific goal such as 2C. The first guesstimate seems to be zero ...
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71 views

Which method is used to calculate tonnes carbon from tonnes CO$_2$ equivalents of GHGs?

It appears that all GHGs are first translated into Carbon Dioxide Equivalents (CDEs) and that calculation is fairly straight forward. Many report in tonnes of Carbon instead of tonnes CDE. I am ...
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Help in understanding this. Is this just an empirical observation on climate sensitivity?

I was reading this on realclimate.org. My question on the below is this. Physics can tell you the radiative forcing of CO2, which is $\small\mathsf{5.35ln(Cnew/Cpreindustrial)}$. This tells you how ...
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10k views

Is climate change a vicious circle?

My question refers to the current process of climate change. CO2 is rising, which leads to the greenhouse effect, which raises temperatures. This leads to more wildfires, which reduces number of trees,...
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CO₂ level is high enough that it reduces cognitive ability. Isn't that a reason to worry?

I think the level of carbon dioxide in the air is high enough to reduce the intelligence of humans. This has nothing to do with climate change. Except that both mean we should reduce CO₂. I never ...
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1answer
91 views

What is the second thermometer in the image from the Esperanza Antarctic temperature record?

Today, the Argentinian meteorological service tweeted about a new temperature record for Antarctica of 18.3°C, made on the Espezanza peninsula. This was subsequently reported by many other sources. ...
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230 views

How to design an experiment to quantify back radiation from atmospheric carbon dioxide?

Based on our current knowledge of CO$_2$ and current instrumental techniques, how big would a laboratory sample of air with 400ppm of CO$_2$ need to be in order to quantify the back radiation from CO$...
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88 views

Has there been a record low temperature in Greeland in 2020?

According to this article , Greenland just set a new all time record low temperature Adding to the list of temperature measurements those alarmists will likely ignore –or won’t even get to hear ...
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What are the affirmations regarding the effects of climate change that have a high degree of consensus amongst climate scientists?

I have seen ample consensus amongst reputable scientists that the earth is getting warmer, and this fact is due to human activity (e.g https://climate.nasa.gov/faq/17/do-scientists-agree-on-climate-...
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Can spraying sulphate particulates in the upper atmosphere to lower Earth's temperature have side effects?

According to Geoengineering treatment stratospheric aerosol injection climate change study Planes spraying tiny sulphate particulates into the lower stratosphere, around 60,000 feet up. The idea ...
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Were there any plans or proposals for “unilateral geoengineering deployments” before this paper was publsihed?

I saw the catchy Phys.org news title Artificially cooling planet 'risky strategy,' new research shows and then looked at the open access article, in Nature Communications (14-Nov-2017 online) Impacts ...
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143 views

Could we sequester co2 by dumping forests in deep oceans?

We know that trees are the most efficient "tool" we have to get CO2 out of the air, but the problem is that most of their fixated CO2 will naturally reenter the carbon cycle through decomposition. ...
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184 views

What happens when the North and South poles flip?

How long does it take the magnetic field to move once the poles start to flip? What environmentally would change? Does the core of the Earth flip? The magnetic poles are moving now. When will it ...
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Climate modelling: statistical downscaling or dynamical?

I would like to assess climate change impacts on Protected Areas (e.g. natural reserves, national parks) for Mediterranean countries. I found easily future data from several Global Circulation Models ...
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Shouldn't we encourage consumption of single-use plastics? Plastic is a good way to sequester carbon [closed]

I've heard a bunch of impractical proposals for ways to sequester carbon: pump CO2 gas into the ground, grow trees for the sole purpose of burying them underground where they won't decompose... and ...
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2answers
88 views

download NASA Earth Exchange Global Daily Downscaled Projections for single lat lon

I have a lat lon - 23.14, 83.14 and I need to download the NASA Earth Exchange Global Daily Downscaled Projections (NEX-GDDP) data from the below website only for this lat lon. https://dataserver....
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Author's Name Of A Book On Bill Maher's Shelf [closed]

Could any of you, please, tell me who is the author of this book on Bill Maher's shelf? The book name is "Climate Science" and the cover color seems to be green. I looked for it on the Amazon website ...
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How do the known abrupt climate change events fit into the xkcd Earth temperature timeline?

The xkcd "Earth Temperature Timeline" depicts the global average temperature during the past 20,000 years, based on the known data. We already have a question about the chart's general accuracy, but I ...
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How is global greenhouse gas emission calculated?

I am sure there are different methodologies to arrive at such a number. Can someone in layman terms describe some of the most widely used and trusted methods and what data are used? Sorry I am outside ...
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Why have “ozone-depleting substances” led to a third of all global warming and half of arctic sea ice loss?

According to the Phys.org article "Ozone-depleting substances caused half of late 20th-century Arctic warming, says study" (emphasis added): A study published today in Nature Climate Change by ...

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