<p>Yes, NASA GISS has it <a href="https://data.giss.nasa.gov/gistemp/tabledata_v3/GLB.Ts.txt" rel="nofollow noreferrer">here</a> . If you go to the <a href="https://data.giss.nasa.gov/gistemp/" rel="nofollow noreferrer">main page</a> and search for <strong>'Global Mean Estimates Based on Land-Surface Air Temperature Anomalies Only (Meteorological Station Data, dTs)'</strong> within that page you will find the links to the above, plus northern and southern hemispheres. </p>

CC BY-SA 3.0
2017-06-05T11:53:54.933Z
2017-06-05T11:53:54.933Z
Andrew Jon Dodds
<p>I have no background in climate science, but I've become interested in explanations of the so-called "global warming hiatus" from 1998-2013. One explanation that people seem to think is convincing comes from <a href="http://science.sciencemag.org/content/348/6242/1469" rel="nofollow noreferrer">Karl et al</a> who, if I understand correctly, say that the apparent hiatus could actually be an artifact of changes the way we calculate sea-surface temperature -- specifically that during that period we moved from primarily boat-based temperature measurements to primarily buoy and Argo float measurements. Since boat measurements are systematically a bit warmer than buoy measurements, the gradual switchover looks like a slight cooling trend when in fact it's just a difference in measurement technique.</p>

<p>I wanted to assess this argument for myself as well as I could, so I thought, if Karl et al are correct, then we shouldn't see evidence of hiatus in land-based datasets then, right? So I went in search of a dataset like <a href="https://climate.nasa.gov/vital-signs/global-temperature/" rel="nofollow noreferrer">NASA's global land-ocean temperature index</a> but constrained to land only. I have found some very granular LST datasets (like <a href="https://neo.sci.gsfc.nasa.gov/view.php?datasetId=MOD_LSTN_CLIM_M" rel="nofollow noreferrer">this</a>), but I don't think I've got the expertise I'd need to turn them into a yearly global timeseries (e.g. should I just take a straight mean of all the datapoints? Should I be weighing by landmass or seasonality, etc?).</p>

<p>So my question is, does a high-level aggregated yearly mean LST dataset exist? If not, why not? And at a higher level, does my approach to investigating the Karl et al work make sense, and if so has someone who knows what they're doing already done it?</p>

<climate><climate-change>
Are there datasets like the global land-ocean temperature index for land surface temperature only?
jacobm
# Are there datasets like the global land-ocean temperature index for land surface temperature only?

(Asked by: username_0 on 2017-06-04)

I have no background in climate science, but I've become interested in explanations of the so-called "global warming hiatus" from 1998-2013. One explanation that people seem to think is convincing comes from [Karl et al](http://science.sciencemag.org/content/348/6242/1469) who, if I understand correctly, say that the apparent hiatus could actually be an artifact of changes the way we calculate sea-surface temperature -- specifically that during that period we moved from primarily boat-based temperature measurements to primarily buoy and Argo float measurements. Since boat measurements are systematically a bit warmer than buoy measurements, the gradual switchover looks like a slight cooling trend when in fact it's just a difference in measurement technique.

I wanted to assess this argument for myself as well as I could, so I thought, if Karl et al are correct, then we shouldn't see evidence of hiatus in land-based datasets then, right? So I went in search of a dataset like [NASA's global land-ocean temperature index](https://climate.nasa.gov/vital-signs/global-temperature/) but constrained to land only. I have found some very granular LST datasets (like [this](https://neo.sci.gsfc.nasa.gov/view.php?datasetId=MOD_LSTN_CLIM_M)), but I don't think I've got the expertise I'd need to turn them into a yearly global timeseries (e.g. should I just take a straight mean of all the datapoints? Should I be weighing by landmass or seasonality, etc?).

So my question is, does a high-level aggregated yearly mean LST dataset exist? If not, why not? And at a higher level, does my approach to investigating the Karl et al work make sense, and if so has someone who knows what they're doing already done it?

**Tags:** climate, climate-change


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## 1 answers

### Answer by username_1 on 2017-06-05. Score: 2 | Accepted answer

Yes, NASA GISS has it [here](https://data.giss.nasa.gov/gistemp/tabledata_v3/GLB.Ts.txt) . If you go to the [main page](https://data.giss.nasa.gov/gistemp/) and search for **'Global Mean Estimates Based on Land-Surface Air Temperature Anomalies Only (Meteorological Station Data, dTs)'** within that page you will find the links to the above, plus northern and southern hemispheres.


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