 |
| Titel |
Numerical studies of regional climate extremes in Southeast China |
| VerfasserIn |
W. Chen, Z. Jiang, L. Li |
| Konferenz |
EGU General Assembly 2009
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250026577
|
|
|
|
|
|
| Zusammenfassung |
| A variable-grid atmospheric general circulation model, LMDZ, with a local zoom over
southeast China is used to investigate climate changes in terms of both mean and extremes.
Two time slices of 30 years are chosen to represent respectively the end of the 20th century
and the middle of the 21st century. The boundary conditions were taken from the outputs of
three global coupled climate models. An evaluation of the simulated temperature and
precipitation for the current climate shows that in general LMDZ reproduces well the spatial
distribution of mean climate and extremesin southeast China, but the model has systematic
cold bias in temperature and tends to overestimate the extreme precipitation. Scenario results
show that in all seasons there is a significantly increase for mean, maximum and minimum
temperature in the entirely region, associated with a decrease in the number of frost days
and with an increase in the heat wave duration. The magnitudes and main spatial
patterns of the changes in temperature extremes show a quite good consistency among
three global scenarios. A warming environment will also give rise to changes in
extreme precipitation events. Precipitation extremes will increase over most of
southeast China, and this in a quite consistent manner among the three global scenarios. |
|
|
|
|
|
|