Those patterns matched three rather dire climate model predictions: that storm tracks — the paths along which cyclones travel in the Northern and Southern hemispheres — would shift poleward;
that subtropical dry regions would expand, and that the tops of the highest clouds would get even higher.
Not exact matches
Climate models predict that as global temperatures rise over the next seven decades,
subtropical regions like the American Southwest will get
drier, while more northern areas, including much of Canada, will get wetter.
In some tropical and
subtropical regions it is more common to speak of the rainy (or wet, or monsoon) season versus the
dry season, as the amount of precipitation may vary more dramatically than the average temperature.
The study revealed five major tropical forest
regions: Indo - Pacific,
Subtropical, African, American, and
Dry Forests, which are found at the boundaries between tropical and dry climat
Dry Forests, which are found at the boundaries between tropical and
dry climat
dry climates.
During summer,
regions of Mediterranean climate are dominated by
subtropical high - pressure, with
dry sinking air capping a surface marine layer of varying humidity and making rainfall unlikely.
Equatorial convective
regions have intensified in upward motion and moistened, while both the equatorial and
subtropical subsidence
regions have become
drier and less cloudy.
In Australia, it's led to a shift in the «
subtropical dry zone,» a
region that stretches around the world and receives little rain, by 125 to 250 miles (200 to 400 kilometers) to the south.
There's an expansion of the
dry subtropical zone to higher latitudes, so
regions like California, like Syria, both areas that have seen unprecedented drought, are expected to get
drier.
Large positive values of P * — E * indicate anomalously wet
regions such as the Asian monsoon
regions, the Pacific ITCZ, and the Northern Hemisphere storm tracks; large negative values of P * — E * indicate anomalously
dry regions such as the
subtropical lows, the Mediterranean, and the Boreal forests (Fig. 1).
Broadly, water resources are projected to decrease in many mid-latitude and
dry subtropical regions, and to increase at high latitudes and in many humid mid-latitude
regions (high agreement, robust evidence).
Since climate change is expected to make
subtropical regions drier, desertification is expected to further increase, especially due to bidirectional albedo — vegetation feedback [22].
The
subtropical regions (e.g. the Mediterranean, North Africa and Central America) experience a
drying owing to increased transport of water vapour out of this area and an expansion of the
subtropical high - pressure
regions towards the poles [4].