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Norway has started to report #COVID19 cases when the test was taken (right) as opposed to when the case was reported (left).

This means the official number of cases gets adjusted back in time (results can take days)

Right: fhi.no/sv/smittsomme-…
Left: worldometers.info/coronavirus/co…
It may have implications for growth rates, but I am sure that effect will be smaller each passing day (should not use the last 2-3 days in the Norwegian reports, as they are not complete).

Max cases per report day 400, max cases per test day 300! Not a minor difference...
There is a clear weekend effect with the test dates (14-15/3, 21-22/3).

If you want a test, I guess don't turn up on the weekend... Maybe avoid getting sick on a weekend too? (it could also be a remarkable coincidence, more data needed to verify).

/end
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Glen Peters
@Peters_Glen
@g_kallis @KHayhoe @ryankatzrosene I missed the IMF graph (where?). On the IMF, my colleague did a graph on how the IMF has constantly revised down GDP figures (the start of each line is the first estimate of GDP growth in the given year, each dot subsequent revisions (biannual).
folk.uio.no/roberan/t/GDP_…
@g_kallis @KHayhoe @ryankatzrosene With the GFC, there was a bounce back to trend (for CO2), but the lower growth since 2010 or so could be (partially) due to the lower GDP growth. I think IMF attributes the lower growth (previous figure) to the GFC. Other crises have had a loss of output (ref your other tweets)
@g_kallis @KHayhoe @ryankatzrosene In any case, this crisis is going to be somewhat different to others. It looks like a much harder hit & may have consequences which linger for many years (even if corona is under control by end 2020). There will be a rebound of sorts, but whether it gets us back on trend???
Read 4 tweets
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Glen Peters
@Peters_Glen
1. A #COVID19 drop in CO₂ emissions is “as if we went back in time & emitted the same amount we were a few years ago — which was already too much. In the grand scheme of things, it really makes no difference” @wang_seaver

uk.reuters.com/article/uk-hea…
2. “Even if there is a decline in emissions in 2020, let’s say 10% or 20%, it’s not negligible, it’s important, but from a climate point of view, it would be a small dent if emissions go back to pre-COVID-19 crisis levels in 2021,” @PFriedling
3. “I wouldn’t be shocked to see a 5% or more drop in carbon dioxide emissions this year, something not seen since the end of World War Two. Neither the fall of the Soviet Union nor the various oil ... crises ... have affected emissions the way this crisis is” Rob Jackson
Read 5 tweets
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Glen Peters
@Peters_Glen
THREAD: The role of politics when investing in a green transition.

Lessons from my $600m gamble on renewables: ‘I am poorer but wiser, yet my analysis 15 years ago was correct: climate change is the major challenge to humanity’

ft.com/content/f9ba8d…
2. "It is 15 years since I sold out of my interests in the oil industry and invested instead in renewables. For me, the energy transition has been personal — sometimes financially costly — but it’s a journey I am glad I have made."
3. "I decided to sell my oil-related businesses from 2001 to 2008 [employing ~5000 people] and invest the proceeds of $600m in renewables. My aim was, as a citizen, to help save the world. But, as a businessman, I also intended to make a profit."
Read 8 tweets

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