With reduced sinks for carbon, normal volcanic outgassing drives atmospheric CO 2 higher over millions to tens of millions of years ( 73) until it reaches the deglaciation threshold (c). Once the tropical ocean begins to open, ice-albedo feedback drives the ice line rapidly poleward (in ~2 ky) ( 327) to (d), where high CO 2 combined with low surface albedo creates a torrid greenhouse climate. Intense silicate weathering and carbon burial lower atmospheric CO 2 (in 10 7 years) ( 164) to (e), the threshold for the reestablishment of a polar ice cap. The hysteresis loop predicts that Snowball glaciations were long-lived (b and c), began synchronously at low latitudes (a and b), and ended synchronously at all latitudes under extreme CO 2 radiative forcing (c and d).

The ocean is predicted to undergo severe acidification and deacidification in response to the CO 2 hysteresis. Qualitatively similar hysteresis is found in 3D general circulation models (GCMs). P co 2, partial pressure of CO 2 wrt, with respect to. The Cryogenian period ( 50) encompasses the paired Neoproterozoic Snowball Earths and the brief nonglacial interlude ( Fig. If the dest file does not exist, all source files will be passed through.The term “cryochron” ( 27) was proposed for the panglacial epochs, on the assumption that their onsets and terminations were sharply defined in time, which now appears to be the case ( Table 1). If dest is a file path, the newer stream will pass through all files if any one of them has been modified more recently than the destination file.

If the dest directory or resolved destination file does not exist, all source files will be passed through. Source files that have been modified more recently than the resolved destination file will be passed through. If dest is a directory path, the newer stream will check for files in the destination directory with the same relative path as source files. If any of these files are newer than the destination files, then all source files will be passed into the stream.Ĭreate a transform stream that passes through files whose modification time is more recent than the corresponding destination file's modification time.

options.extra - string or array An extra file, file glob, or list of extra files and/or globs, to check for updated time stamp(s).

options.map - function Map relative source paths to relative destination paths (e.g.

options.ext - string Source files will be matched to destination files with the provided extension (e.g.

dest - string Path to destination directory or file.

Nups patcher gcm