Questions tagged [climate-change]

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

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73 views

Intuition on overall effects from climate change under different levels of warming

I am not a climate scientist, but I have been reading climate literature lately for my own education. Much of it discusses various effects that could be expected with different levels of warming, ...
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0answers
26 views

Relationship between Earth's heat dispersion rate (average surface air temperature from summer to winter time) and greenhouse gases

What is the most effective way to study global warming and the role of greenhouse gases using a methodology based on analyzing the Earth's seasonal variations (summer-winter) of the temperature of ...
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1answer
212 views

In terms of the greenhouse effect, what is the Earth's heat capacity?

(Question moved from physics to earth science) Has the earth’s atmosphere reached an equilibrium at which the input radiation energy roughly equals its output, or is the output significantly lower ...
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2answers
295 views

Is volume of air increasing as CO2 levels increase?

CO2 levels are increasing, they have crossed 400 ppm, which means that of every million gas molecules in the air, 400 are of CO2. It has been increasing. Does that mean the total volume of air in the ...
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1answer
172 views

To what year do we need to return to prevent climate change?

I regularly see articles like this where a country has or has committed to reduce their carbon emissions by a certain percentage in relation to a certain year. That article mentions that Scotland has ...
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1answer
46 views

Does the extension of the absorption line of $\text{CO}_2$ with temperature play a role in the climate change?

I've read not long ago that the absorption line of the $\text{CO}_2$ becomes larger with temperature thanks to Doppler effect (if it's false it would be great to tell me). My question is the following:...
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1answer
117 views

Does “Arctic Greening” mean an increase in the spatial extent of vegetation, an increase in particular types of vegetation, or both?

I am trying to study the impact of biogenic volatile organic compounds (BVOCs) on the atmospheric chemistry of the Arctic Region which has been said to be "greening", by taking HCHO as a proxy.
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2answers
84 views

If plants convert a greenhouse gas into a non-greenhouse gas, do they cool?

Plants turn Carbon Dioxide into Oxygen, that is not a greenhouse gas. But Carbon Dioxide is. Therefore, wouldn't plants cool the area?
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1answer
614 views

Every 202,500 years, Earth wanders in a new direction; does it affect climate?

I refer to this article on nytimes.com: Every 202,500 Years, Earth Wanders in a New Direction TLDR: Scientists believe the earth's orbit oscillates between circular and more elliptical due to the ...
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1answer
336 views

Does global warming affect tsunamis?

I have been doing some research into global warming, and I was curious as to whether or not increasing the temperature of the oceans would affect tsunamis to any significant degree. My gut tells me ...
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56 views

Quantifying long term melt record on glacier surface

I intend to create a long term melt record on a glacier surface. What are parameters required to efficiently calculate the same using satellite, weather station observations & reanalysis datasets (...
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44 views

Global climate change

We all know that global climate change is becoming a big real change that is affecting the world's ecosystems and life cycles. Will global climate change affect the hot areas of the world or deserts ...
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0answers
27 views

Where I find the info about what plants, trees can be planted in a locality

I would like to know what plants, trees can be planted in a locality. I wanted this info around the globe based on latitude and longitude or by some other means. Is there a source organisation/source ...
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29 views

Trying to calculate the percentage of carbon emissions that is offset by 45,000 acres?

In my problem there is an average net ecosystem production rate of: 0.25kgC/m2/yr Am asked: a. What percentage of 140,000.000tons/yr would be offset from reforesting 45,000 acres? ...
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2answers
107 views

What does 5,000,000 tonnes of CO2 look like?

Reading a news article Probe after Gorgon releases millions of tonnes of greenhouse gas, I am confused. CO2 is a gas, right? Gases are not very dense, right? So what does 5MT of the stuff look like?...
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45 views

Calculating exoatmosphereic flux and figuring out amount of SW Earth will absorb at an albedo of 0.3?

Am working through two problems which I am not sure if I am handling correctly. Here they are: a. If the Earth decreases its distance from the sun by 0.03 Astronomical Units (AU), what will be ...
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1answer
91 views

Global warming versus nuclear half-lives [closed]

What is (roughly) the half-life of the materials used/generated in a nuclear plant, if that plant goes into meltdown? Could the world bounce back from global warming in a shorter time period than that ...
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2answers
144 views

Winter in the Northern Hemisphere in July? Can anyone explain it?

The July 2007 issue of the National Geographic Magazine dedicates several pages to "Climate Change" and "Global Warming". The author explains in detail the Earth's movements and how they provoke ...
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1answer
46 views

How sustainable is timber housing? [closed]

Recently I watch a video on which they made a pretty impressively large building complex for housing out of timber. And they were saying that timber is sustainable compared to concrete and such. From ...
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114 views

Gulf stream weakening affects on both ends of the system - Europe and Carribean

There have been reports about the Gulf Stream weakening. Everything I have read about this concentrates on the (possibly substantial) cooling this would cause in Europe. If this weakening occurs, ...
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37 views

How does one analyze this graph on atmospheric C02 data obtained from the Mauna Loa observatory?

Graph I am analyzing: What I am trying to figure out from the graph is: What is the range for CO2 over the record (approximation) What are the major forcings for the overall trend in this record ...
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0answers
28 views

How to analyze this data showing atomospheric CO2, CH4 and tempertures obtain from an ice sample?

Here is the chart: My questions are: Is the atmosphere in equilibrium over this record? how would I determine what the maximum and minimum values for each record is (approximation). Is there a ...
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1answer
91 views

At what rate does Earth's atmosphere shed heat into space? [closed]

If we had a heat bank account (the atmosphere) + heat cash supply (ice) + heat debt (the oceans) could governments find a way to balance our heat economy that doesn't kill ...
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120 views

Will the recent findings regarding nitrogen rock weathering alter climate change projections?

I've seen a few articles lately about research published in the Journal Science that concludes that 26% of the nitrogen in the ecosystem is from rock weathering. These results seem to fill in a ...
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2answers
7k views

“Five of the Solomon Islands disappeared” due to sea level rise, how is this possible so quickly?

The text of the introduction to the BBC Podcast Sea Levels Rise; The Compass, Living on the Edge Episode 1 of 4 says: Five of the Solomon Islands have disappeared, many more are becoming ...
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1answer
202 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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1answer
296 views

Is altitude of everything decreasing due to sea level rise?

We know that sea level is rising, though some people say climate change is fake. Altitude is defined as the height of something measured from sea level. Since sea level is increasing, and the ...
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1answer
81 views

Why the $\delta \, ^{18}\text{O}$ in foraminifera shells decrease with temperature even if the oceanic $\delta \, ^{18}\text{O}$ stay constant?

I understand why foram shells contain more $^{18}\text{O}$ when there are ice sheets present, since $^{16}\text{O}$ evaporates more readily and gets trapped in the ice, increasing the relative ...
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2answers
3k views

Why is ozone a greenhouse gas if it absorb UV radiation?

Ozone is considered a greenhouse gas, even though it absorbs shortwave (UV) radiation from the Sun, which does not fit with the definition for greenhouse gases, where they are supposed to: "absorbs ...
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6answers
4k views

If water is a renewable resource, why is there water scarcity?

Water is a renewable resource, renewed by the water cycle. If we use water too quickly, water should get evaporated and come down again as precipitation. So, Why is there water scarcity if water ...
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1answer
756 views

Understanding a diagram of Earth's radiation balance

Trying to understand this image. Can someone tell me if I have the right reasoning here: Sun has 100% SW shooting to earth 30% of that 100% is reflected by clouds 70% remains Of that 70%, 45% of that ...
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0answers
97 views

What is the general procedure to run WRF-chem with chen_opt=16

Is there anybody who has run WRF-chem with chem_opt=16 successfully to simulate the green house gases? According to the User guide, it can be done in this way. But ...
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1answer
630 views

Are we now and/or have we been in the RCP8.5 scenario?

Is it generally understood that we (globally) have been living in an RCP8.5 scenario over the past 7-8 years? Such that a predictive climate model using RCP8.5 assumptions that was run circa 2011 can ...
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1answer
340 views

The atmosphere and the dispersion of greenhouse gases

I have been researching everywhere. At what level of the atmosphere do carbon dioxide and other greenhouse gases occur? I can't get a straight answer and am frustrated...
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1answer
209 views

Are these the net radiation at surface, and the complete energy balance at surface?

Could not find these in my book but I found something I think might them online (is this correct): Net radiation balance: R_NET = SW↓ - SW↑ + LW↓ - LW↑ Complete energy balance: R_NET - G = H + LE ...
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0answers
151 views

How to relate RCM/GCM RCP climate projections to observational data for use in a hydrologic model

As a (smaller) part of my research, I want to look at climate projection data and how that might influence the hydrology within a study catchment in Rajasthan, India. For "the present day" climate, I ...
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55 views

Correlation between temperature and precipitable water in the tropical climate

Air temperature is known to correlate well with precipitable water at higher latitudes. What are the likely factors that degrade the correlation in the tropical monsoon climate?
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1answer
65 views

How much warming there was over time for a specific month?

I'm calculating warming trends in specific places and periods of time, that are related to the time a migratory bird spends in a stopover. But using different methods I got different results and I'm ...
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2answers
303 views

Is global warming a linear process?

Is global warming linear in the sense that doubling the emission of Greenhouse gases will result in a doubling of global warming. Is there a threshold, i.e. is there are certain concentration of GHG ...
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1answer
99 views

CMIP5 multi-model ensemble, can it be shown as ensemble average?

Let’s say I have got 15 CMIP5 models’ outputs of a given variable e.g. temperature, for RCP6.5 (2020-2100) run. I want to plot how the temperature will change in the future 2020-2100 (scatter plot, x ...
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3answers
5k views

Do fossil fuels insulate the crust from the Earth's interior?

I was doing a project for my English class, and I came upon the article Energy conservation in the earth's crust and climate change. I can't view the full text of the article, but the abstract piqued ...
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0answers
50 views

How well do past climate models stick to current observations? [duplicate]

I'm wondering how good the climate models of the recent past have been at predicting the current climate. Notably, I've heard quite a few times that the temperature was increasing faster than the ...
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3answers
423 views

What evidence is backing the claim that the CO₂ we're releasing in the atmosphere is the main cause of climate change?

There's a lot of evidence that: mankind is putting a lot of CO2 in the atmosphere CO2 levels are currently rising CO2 contributes to the green-house effect, which contributes to increase earth ...
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1answer
123 views

Calculating 30% less solar energy. Provided the math is right, would there have been liquid water on Earth?

The Sun is estimated to have had a solar luminosity about 30% lower when the solar system was formed. Now if I assumed that Earth's albedo was the same as it is today, what ...
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2answers
152 views

Do current general circulation models model climate oscillations?

Ten years ago I studied the third report of the Intergovernmental Panel on Climate Change with some friends. I remember a bit of a hedge in the report, to the effect that general circulation models ...
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1answer
84 views

Status of overdue glaciation hypothesis

What is the status of the Early Anthropocene hypothesis, in the specific meaning that the climate would be projected to be significantly cooler (such as, on the order of by 0.8 degrees in the planet ...
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3answers
1k views

If there's more water in the atmosphere due to global warming, how are there fewer mountain glaciers?

As I understand it, moisture condenses at mountain tops to form the mountain glaciers that provide water. The mountain topography doesn't change much in the span of a few decades, so if there's more ...
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0answers
48 views

What regions of the US will have *improved* climate given current predictions of climate change?

This is really a two part question: 1) Is there a good model for mapping climate conditions in a particular location to pleasantness or livability or something like that? 2) If there is such a model,...
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2answers
625 views

Relationship between natural disaster and global warming, in the media

Sorry in advance if this is too broad a question. Feel free to let me know if it is off-topic. I don't know more than the next person around about climate change, but I am really not a climato-...
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1answer
1k views

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?