Pilot study focusing on a region vulnerable to climate change Although the study highlights that long term
changes in rainfall intensity are not always» man - made,» it does not necessarily mean that today's weather anomalies across the Indian Ocean rim countries and, in particular, their frequency, are not subject to human influence.
To test the cause of
this change in rainfall intensity, the researchers also simulated the region with several climate models.
Not exact matches
Overall, the chances of seeing a
rainfall event as intense as Harvey have roughly tripled - somewhere between 1.5 and five times more likely - since the 1900s and the
intensity of such an event has increased between 8 percent and 19 percent, according to the new study by researchers with World Weather Attribution, an international coalition of scientists that objectively and quantitatively assesses the possible role of climate
change in individual extreme weather events.
Combining the STORM model with analysis of the
rainfall data set allowed the investigators to gain insights into decadal trends
in monsoonal
rainfall intensity under climate
change.
The effects of circulation
change in the North Atlantic are different to (potentially solar - driven)
rainfall variability
in the sub-tropics and are different again from the impacts of
changing frequency and
intensity in El Nino patterns.
Changes (increases)
in rainfall intensity, temperatures, humidity and rate of snowmelt and have occurred
in recent decades, due
in part to increases
in CO2 concentration.
Also, along with warmer weather,
changes in the pattern and
intensity of
rainfall are already occuring.
Such
changes in the growing period are important, especially when viewed against possible
changes in seasonality of
rainfall, onset of rain days and
intensity of
rainfall, as indicated
in Sections 9.2.1 and 9.3.1.
Impacts of cloud superparameterization on projected daily
rainfall intensity climate
changes in multiple versions of the Community Earth System Model
Small
changes in solar
intensity lead to
changes in all these elements which
change the distribution of heat and
rainfall and the reflectance — and thus the energy budget — of the planet.
These factors point to a need for planners to account for such
rainfall events as housing and infrastructure development occurs
in this region, and for the possibility that the
intensity and frequency of such events might
change in the future as the climate continues to warm.
Their work, published
in the journal Reviews of Geophysics, summarizes current research on the analysis of future
changes to the
intensity, duration and frequency of short - duration extreme
rainfall.
Human - induced
changes in the IPWP have important implications for understanding and projecting related
changes in monsoonal
rainfall, and frequency or
intensity of tropical storms, which have profound socioeconomic consequences.
Publishing
in the Reviews of Geophysics, Westra et al (2014) summarize the current state of research
in the analysis of future
changes to the
intensity, frequency and duration of extreme
rainfall.
The climate
change has visible signs
in Pakistan, which include hotter summers, early cold spell, monsoon irregularity with untimely
rainfall, increased
rainfall over short period causing water logging, increased frequency and
intensity of floods — especially recent floods, which destroyed livelihoods
in Punjab and Sindh districts — very little
rainfall in dry period, crop failure due to drought and salinity intrusion along the coastal region.
Researchers studying a rapid global warming event, around 56 million years ago, have shown evidence of major
changes in the
intensity of
rainfall and flood events.
In concert with the results for increased extremes of intense precipitation, even if the wind strength of storms in a future climate did not change, there would be an increase in extreme rainfall intensit
In concert with the results for increased extremes of intense precipitation, even if the wind strength of storms
in a future climate did not change, there would be an increase in extreme rainfall intensit
in a future climate did not
change, there would be an increase
in extreme rainfall intensit
in extreme
rainfall intensity.
In addition to rising global temperatures, the increasing frequency and
intensity of extreme
rainfall events is one of the clearest already observed effects of climate
change.