5 ms·

I'm not sure how they got data going to the end of 2022? This also doesn't show a low point in 2012, so can't be what they're basing it on.

by soperj 4y ago

czinck 4y ago
The red line (2022 data) stops at July, and while it's hard to tell exactly it looks to me like the diamond line (not sure what to call that color) for 2012 is the lowest line between August and October.
- soperj 4y ago
  Ahhh i see it now, 2 red lines with pluses. I was looking at 2015. That makes wayyy more sense.
pier25 4y ago
There are multiple years show. The PIOMAS project has been collecting data with a satellite over the Arctic since 1979 IIRC.
- soperj 4y ago
  The PIOMAS project is just a calculation based on other satellite observations, the model has been verified using 2 different satellites, one launched in 2003, and another in 2010. [0] Their paper on the model was released in 2003. My mistake was that I was looking at the 2015 line, because the color and design looks exactly like 2022. [0] - https://en.wikipedia.org/wiki/Measurement_of_sea_ice#Sea_ice_volume https://en.wikipedia.org/wiki/Measurement_of_sea_ice#Sea_ice...
  - pier25 4y ago
    If you read that part in Wikipedia again you will see those dates are about the ICESat and Cryosat projects (that are now contributing to PIOMAS). But PIOMAS has been collecting Arctic ice data since 1979. For example: http://psc.apl.uw.edu/wordpress/wp-content/uploads/schweiger/ice_volume/BPIOMASIceVolumeAnomalyCurrentV2.1.png http://psc.apl.uw.edu/wordpress/wp-content/uploads/schweiger... If you don't believe, download the PIOMAS data and check it yourself. https://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/data/ https://psc.apl.uw.edu/research/projects/arctic-sea-ice-volu...
    - soperj 4y ago
      I understand that they've been using data collected by satellites since 1979, but they didn't even come up with the model until 99, and released the paper on it in 2003, so the model was used retrospectively on data previously collected, not specifically collected for that project. You can see that in your own link.

I'm not sure how they got data going to the end of 2022? This also doesn't show a low point in 2012, so can't be what they're basing it on.

by soperj 4y ago

I'm not sure how they got data going to the end of 2022? This also doesn't show a low point in 2012, so can't be what they're basing it on.

czinck 4y ago

The red line (2022 data) stops at July, and while it's hard to tell exactly it looks to me like the diamond line (not sure what to call that color) for 2012 is the lowest line between August and October.

soperj 4y ago
Ahhh i see it now, 2 red lines with pluses. I was looking at 2015. That makes wayyy more sense.

pier25 4y ago

There are multiple years show. The PIOMAS project has been collecting data with a satellite over the Arctic since 1979 IIRC.

soperj 4y ago
The PIOMAS project is just a calculation based on other satellite observations, the model has been verified using 2 different satellites, one launched in 2003, and another in 2010. [0] Their paper on the model was released in 2003. My mistake was that I was looking at the 2015 line, because the color and design looks exactly like 2022. [0] - https://en.wikipedia.org/wiki/Measurement_of_sea_ice#Sea_ice_volume https://en.wikipedia.org/wiki/Measurement_of_sea_ice#Sea_ice...
- pier25 4y ago
  If you read that part in Wikipedia again you will see those dates are about the ICESat and Cryosat projects (that are now contributing to PIOMAS). But PIOMAS has been collecting Arctic ice data since 1979. For example: http://psc.apl.uw.edu/wordpress/wp-content/uploads/schweiger/ice_volume/BPIOMASIceVolumeAnomalyCurrentV2.1.png http://psc.apl.uw.edu/wordpress/wp-content/uploads/schweiger... If you don't believe, download the PIOMAS data and check it yourself. https://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/data/ https://psc.apl.uw.edu/research/projects/arctic-sea-ice-volu...
  - soperj 4y ago
    I understand that they've been using data collected by satellites since 1979, but they didn't even come up with the model until 99, and released the paper on it in 2003, so the model was used retrospectively on data previously collected, not specifically collected for that project. You can see that in your own link.