Lmst

Don't you just love seeing the #ARGO network getting going?

(please ignore the mad depth units of x100m)

plots of ARGO potential temperature observation counts from 1992 to 2005 at different depths. Plots show an almost exponential growth clear from 2000 to 2005

Mind = blown.

Satellite launched at December 11, 1972 07:56:00 UTC

Data available for *the day of launch* here https://data.ceda.ac.uk/neodc/esacci/sea_ice/data/sea_ice_concentration/L3C/esmr/25km/v1.1/SH/1972/12

Insane data recovery/processing by a clearly great team: https://essd.copernicus.org/articles/16/1247/2024/

#seaice #reanalysis

Our colleagues Christina Radtke, Hannes Müller-Thomy, Tobias Langmann and Henning Müller are currently in Mexico at @UNAM_MX 🇲🇽 for a research project on #reanalysis products focusing on #hurricanes. Check out the recorded talk: https://youtu.be/AfcNuYseXcE
We are excited about upcoming collaborations!

Hello from Reading! Our colleague Janna is currently at the NWP SAF Workshop on Satellite Observations of the Earth System Interfaces (https://events.ecmwf.int/event/420/). Exciting insights and discussions about how we can exploit #satellite #observations for numerical weather #predictions and #reanalysis even better!

Nighttime #stats question: When conducting a meta-analysis, which tests would you put under Robustness and which under Sensitivity? And what is your definition of each?

#metaanalysis #reanalysis #robustness #diagnostics

4yo: Abbie, do you know this guy?
Me: no
Sivan: he’s a bad man movie. He’s name is punishp.

#parenting #Reanalysis #linguistics

The first sad story in humanity's ruthless colonization of the planet.

#dodos #extinction #humans #colonisation #Reanalysis

The dodo was faster and smarter than you think | Popular Science https://www.popsci.com/science/dodo-myths/?utm_source=pocket-newtab-en-us

The promised plots.
I'll show data since 2003 only because only then did real measurements really kick off. Before that, measurements were so spotty with 1 in January in one year, then 3 years nothing, then 5 measurements in for example August and so on.
Data source for measurements is #NOAA https://www.ncei.noaa.gov/access/world-ocean-database-select/dbsearch.html

The other plot is from a #ReAnalysis called EN4.2 https://www.metoffice.gov.uk/hadobs/en4/download-en4-2-2.html#c14_analyses
It is based on the same NOAA data, and goes back to 1900. EN4.2 has better quality assurance than my download. And EN4.2 is able to calculate the likely values in adjacent coordinates and adjacent months.

Among other Reanalyses, EN4.2 has also been used in the newest preprint by the Dutch team around #vanWesten. It sees AMOC tip in 2065 in RCP8.5 and in 2085 in RCP4.5. But it is based on biased Reanalyses and known-to-be too stable #CMIP6: https://arxiv.org/pdf/2407.19909

Whereas the first new preprint by van Westen's team, which tips AMOC 2037-2064, uses only real measurements of the 3 dedicated monitoring arrays in the North, tropical and South #Atlantic. https://arxiv.org/pdf/2406.11738
Here, the caveat is: very short data series.

With measurements being so spotty, I only show monthly salinity 2003ff in down to 10m depth. And only from the area in the South Atlantic. Averaged on a 2 by 2 degree grid from Argentina's coast to longitude -48, and latitudes 40-48 South.

Sorry, not sorry: neither dataset shows a smoking gun. 😁
#FridaysForFuture #ChartsForFuture

Figure 3 in a)
Caption: "Early warning indicators for salinity at different depth levels. The blue regions indicate a significance ratio for salinity and for different depth levels."

It shows 9 maps of the Atlantic for depth levels from 5m to 4375m. Each map has some highlighted areas in blue where salinity in their analysis was significantly altered just before AMOC tipps.
5m depth shows significance at 30 degrees North all across the Atlantic, and at 40 to 48 degrees South.

2 bar charts with salinity in the South Atlantic at down to 10m depth.
Top chart is ReAnalysis EN4.2, bottom chart Word Ocean Database hosted on NOAA's website.

EN4.2 shows a strong rise in the months August and September. August shows no variability at all. All other months do not show a rise. But rather large variability year on year. Except for December where variability has ceased in 2017.

The other chart shows a few gaps where a month had no measurement at all.
Strong variability, in parts going beyond the chart range (my lack of quality assurance). Variability ceased in 2017 for September and December.
A rise is visible in March, June, August, September.

July sees a continuous drop in variability since 2006.

A couple of very important articles in the @ECMWF newsletter here from my perspective: https://www.ecmwf.int/en/about/media-centre/news/2024/summer-2024-newsletter-published

First the new #ocean and #seaice model, and second the new ocean and sea ice #reanalysis that uses it

Soil fractionation offers one way to try to tease out soil carbon dynamics beyond bulk. Using a linear-mixed effects model and large soil carbon database ( #ISRaD ) Heckman et al 2022 https://doi.org/10.1111/gcb.16023 found that depth was critical in explaining soil carbon stocks and persistence. Many traditional ClORPT variables were also explanatory, except for NPP, though their effects of different fractions differed. #SoilCarbon #DataCollection #Reanalysis #sciLit

Unprecedented!

The anomaly for September 2023 is:

the largest warm anomaly

of any month

of any year

in the ERA dataset (back to 1940)

September 2023 was around 1.75ºC above the preindustrial average

More: https://climate.copernicus.eu/press-releases

#Climate #ClimateCrisis #CopernicusClimate #Reanalysis #OpenData #EarthObservation #ClimateAction

August #SeaIce highlights from #C3S:

❄️ #Antarctic sea ice saw the largest negative anomaly for August on record, at 12% below average;
❄️ #Arctic sea ice was 10% below average but well above the record minimum from August 2012.

More: https://climate.copernicus.eu/sea-ice-cover-august-2023?utm_source=socialmedia&utm_medium=tw&utm_campaign=CBaugust23

#CopernicusClimate #Climate #seaice #Reanalysis #climatecrisis #Antarctic