3 ms·

11B tons of ice melted in Greenland – in just one day

48 points by known 7y ago

effnorwood 7y ago
It didn’t.
Proven 7y ago
It's summer, isn't it? tl;dr: 11 million cubic meters is only 36% more than usual. Next year it'll be 40% less.
- lowtolerance 7y ago
  Only 36% more than usual? Something tells me that if you were told you had to pay 36% more in taxes next year, you wouldn’t think that’s an insignificant amount.
  - pridkett 7y ago
    The question is much of an outlier is it from normal? My taxes often vary significantly due to restricted stock units, sign on bonuses, crypto transactions, etc. 36% higher than the mean might still be within a standard deviation if it's normally high variance. It's a large number, and it's part of a global scale problem. But, the presentation of the number has been worthless because it hasn't shared how abnormal the number is and most people have zero frame of reference. For example, I live on a small lake. About 400 access. The lake level, in the absence of rain and inflow would drop about 1.5 inches a week. Surprisingly, that comes out to more than 9000 tons of water evaporating a day. From a small lake. In normal conditions.
mikelyons 7y ago
http://www.seattle.gov/utilities/environment-and-conservation/climate-change-program/projected-changes/sea-level-rise-map http://www.seattle.gov/utilities/environment-and-conservatio... Oh no, my part of seattle will be under water in less than 30 years :\
Merrill 7y ago
About 11 cubic kilometers from an area of 2,166,086 square kilometers. Or about 5 millimeters thickness?
dangom 7y ago
And as a look out of the window, on a sunny Sunday, all I see are hundreds of unnecessarily large SUVs riding around (1 person per vehicle, usually), contributing - like every day - their good share of superfluous greenhouse gases to our atmosphere. Probably going to/from a place where a walk or a bike ride would suffice, or where public transportation could get you to in no time. CO2 emission per capita continue increasing [1], and its no surprise why. In the US, personal vehicles account for over 25% of greenhouse emissions - that accounts for about 0.1ppm/year C02 increase in the atmosphere [from 2, 3], or an extra 10ppm in the next century if things don't change. That only from cars. But things are not going to change. Companies are already studying how much money they will save by shipping things over the artic when all ice is gone during the summer. That's due to happen within the next 50 years. [1] https://www.google.com/publicdata/explore?ds=d5bncppjof8f9_&met_y=en_atm_co2e_pc&idim=country:USA:GBR:RUS&hl=en&dl=en#!ctype=l&strail=false&bcs=d&nselm=h&met_y=en_atm_co2e_pc&scale_y=lin&ind_y=false&rdim=region&ifdim=region&tdim=true&hl=en_US&dl=en&ind=false https://www.google.com/publicdata/explore?ds=d5bncppjof8f9_&... [2] https://en.wikipedia.org/wiki/List_of_countries_by_greenhouse_gas_emissions https://en.wikipedia.org/wiki/List_of_countries_by_greenhous... [3] https://www.co2.earth/co2-acceleration https://www.co2.earth/co2-acceleration
tofflos 7y ago
Sigh. The article doesn't say anything about how this compares to the "meltiest" day of years past nor does it provide any usable numbers which would allow the reader to put those 11B tons into any kind of meaningful context. "Roughly 197 billion tons of ice from Greenland melted into the Atlantic Ocean in July, Ruth Mottram, a climate scientist with the Danish Meteorological Institute, told CBS News Friday. That's about 36 percent more than scientists expect in an average year." Ok, ok, we get it. It's melting more than average. Now please provide some actual year-over-year numbers and include a projection for this year so can do an apples-to-apples comparison and start our manmade-vs-natural-cycle discussion.
- coldtea 7y ago
  Given what we already know, and the already scary "36 percent more than expected" information, this sounds a lot like - Everybody! There's a 12 sq. ft. hole on the hull of our ship the Titanic! - Yeah, so? Gives us average hole sizes on other damaged ships that didn't sink, so we can discuss calmly for several hours after diner how important it really is!
  - karmakaze 7y ago
    That's not how I read that. It was "about 36 percent more [in one month] than scientists expect in an average year."

48 points by known 7y ago

effnorwood 7y ago

It didn’t.

Proven 7y ago

It's summer, isn't it? tl;dr: 11 million cubic meters is only 36% more than usual. Next year it'll be 40% less.

lowtolerance 7y ago
Only 36% more than usual? Something tells me that if you were told you had to pay 36% more in taxes next year, you wouldn’t think that’s an insignificant amount.
- pridkett 7y ago
  The question is much of an outlier is it from normal? My taxes often vary significantly due to restricted stock units, sign on bonuses, crypto transactions, etc. 36% higher than the mean might still be within a standard deviation if it's normally high variance. It's a large number, and it's part of a global scale problem. But, the presentation of the number has been worthless because it hasn't shared how abnormal the number is and most people have zero frame of reference. For example, I live on a small lake. About 400 access. The lake level, in the absence of rain and inflow would drop about 1.5 inches a week. Surprisingly, that comes out to more than 9000 tons of water evaporating a day. From a small lake. In normal conditions.

mikelyons 7y ago

http://www.seattle.gov/utilities/environment-and-conservation/climate-change-program/projected-changes/sea-level-rise-map http://www.seattle.gov/utilities/environment-and-conservatio... Oh no, my part of seattle will be under water in less than 30 years :\

Merrill 7y ago

About 11 cubic kilometers from an area of 2,166,086 square kilometers. Or about 5 millimeters thickness?

dangom 7y ago

And as a look out of the window, on a sunny Sunday, all I see are hundreds of unnecessarily large SUVs riding around (1 person per vehicle, usually), contributing - like every day - their good share of superfluous greenhouse gases to our atmosphere. Probably going to/from a place where a walk or a bike ride would suffice, or where public transportation could get you to in no time. CO2 emission per capita continue increasing [1], and its no surprise why. In the US, personal vehicles account for over 25% of greenhouse emissions - that accounts for about 0.1ppm/year C02 increase in the atmosphere [from 2, 3], or an extra 10ppm in the next century if things don't change. That only from cars. But things are not going to change. Companies are already studying how much money they will save by shipping things over the artic when all ice is gone during the summer. That's due to happen within the next 50 years. [1] https://www.google.com/publicdata/explore?ds=d5bncppjof8f9_&met_y=en_atm_co2e_pc&idim=country:USA:GBR:RUS&hl=en&dl=en#!ctype=l&strail=false&bcs=d&nselm=h&met_y=en_atm_co2e_pc&scale_y=lin&ind_y=false&rdim=region&ifdim=region&tdim=true&hl=en_US&dl=en&ind=false https://www.google.com/publicdata/explore?ds=d5bncppjof8f9_&... [2] https://en.wikipedia.org/wiki/List_of_countries_by_greenhouse_gas_emissions https://en.wikipedia.org/wiki/List_of_countries_by_greenhous... [3] https://www.co2.earth/co2-acceleration https://www.co2.earth/co2-acceleration

tofflos 7y ago

Sigh. The article doesn't say anything about how this compares to the "meltiest" day of years past nor does it provide any usable numbers which would allow the reader to put those 11B tons into any kind of meaningful context. "Roughly 197 billion tons of ice from Greenland melted into the Atlantic Ocean in July, Ruth Mottram, a climate scientist with the Danish Meteorological Institute, told CBS News Friday. That's about 36 percent more than scientists expect in an average year." Ok, ok, we get it. It's melting more than average. Now please provide some actual year-over-year numbers and include a projection for this year so can do an apples-to-apples comparison and start our manmade-vs-natural-cycle discussion.

coldtea 7y ago
Given what we already know, and the already scary "36 percent more than expected" information, this sounds a lot like - Everybody! There's a 12 sq. ft. hole on the hull of our ship the Titanic! - Yeah, so? Gives us average hole sizes on other damaged ships that didn't sink, so we can discuss calmly for several hours after diner how important it really is!
- karmakaze 7y ago
  That's not how I read that. It was "about 36 percent more [in one month] than scientists expect in an average year."