Sunspots and Solar Output

I’m glad I started the Climate Data Service, because it makes working with climate data easier. Even for me. I could access and study it before, but now it’s all in one place and one format, and the ease of use is a good motivator for closer study.

Something I’ve just been looking at is the relationship between sunspot counts and solar irradiance. I’ve used TSI (total solar irradiance) to estimate the influence of solar variations on global temperature, but reliable records don’t start until about 1976 when satellite observations began. Before that, we have to rely on proxies, of which the most common is sunspot counts. There are many reconstructions of solar irradiance which use more, but I’m not aware that any of them can be considered particularly better than the others.

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Republican War on Science

The Big 3: CO2, CH4, N2O

The four greenhouse gases with the strongest effect on climate through their climate forcing are water vapor (H2O), carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) (I’m omitting halocarbons, which come in a wide variety). We don’t control the concentration of water vapor, temperature does that. But the CO2, CH4, and N2O load is directly due to us.

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Climate Data Update

I’ve just released updated data (the latter-April update) for the Climate Data service. So far, the service seems to be well-liked by subscribers.

The latest includes updates to some of the existing data fields, and new data fields have been added. The new fields are:

Field.Name Units Description
cow.way deg.C global land+ocean temperature Cowtan & Way
berk.glob deg.C global land+ocean temperature Berkeley Earth
co2.mlo ppmv CO2 Mauna Loa
co2.anom.mlo ppmv de-seasonalized CO2 Mauna Loa
co2.glob ppmv CO2 global marine surface
co2.glob.anom ppmv de-seasonalized CO2 global marine surface
co2.grim ppmv CO2 Cape Grim
ch4.grim ppbv CH4 (methane) Cape Grim
n2o.grim ppbv N2O Cape Grim
nino34 deg.C Nino 3.4 temperature
nino34.anom deg.C Nino 3.4 temperature anomaly
aod.glob global aerosol optical depth NASA
aod.nhem northern hemisphere aerosol optical depth
aod.shem southern hemisphere aerosol optical depth
pmod.tsi W/m^2 total solar irradiance PMOD

There’s not much time to get a subscription it at the low rate of $25; the price will rise in May.

So subscribe now, in two easy steps. Step 1: make a donation of $25 at donating at Peaseblossom’s Closet; Step 2: post a comment here (which I will not make public) and be sure to include your email address (so I know where to send it).

NOAA Hottest

NOAA has joined NASA in releasing data for global temperature this March, and not only is the NOAA value a scorcher, it’s the hottest temperature anomaly on record.


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CO2 Status Report

These days, blogs and news reports about global warming often include the optimistic report that emissions worldwide, and in the U.S., are on the decline. Yes, that’s a good thing. It’s important, it’s crucial.

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March Madness

NASA has released data for global temperature this March, and it’s a scorcher: the 2nd-hottest temperature anomaly on record, and the hottest March.



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