Reconstructing the recent carbon cycle from atmospheric CO&lt;sub&gt;2&lt;/sub&gt;, &amp;#x3b4;&lt;sup&gt;13&lt;/sup&gt;C and O&lt;sub&gt;2&lt;/sub&gt;/N&lt;sub&gt;2&lt;/sub&gt; observations*
Tellus. Series B, Chemical and physical meteorology