“In 14 of the last 20 years we have registered a rainfall
deficit compared to the 1970/2000 period, a situation that favours the
occurrence of periods in which the mainland will be in the highest classes of
meteorological drought and consequently agricultural and water drought”.
Regarding the drought that the country is going through,
with 55% of the mainland in a severe drought class and 45% in extreme drought,
the IPMA warns that in some of the more recent meteorological droughts, the dry
periods last longer.
If the hydrological year is considered, which runs from
October 1st to September 30th of the following year, the current year, to date,
is the second driest ever (since 1931, when data began to be compiled), only
exceeded by the hydrological year 2004/2005.
If the numbers between January and July (calendar year) are
considered, the IPMA notes that the driest year was 2005, followed by 2012, so
this is the third driest year since 1931.
In July of last year, almost 40% of the mainland was normal
and the rest in mild, moderate or severe drought. The situation worsened in
August (22% of the territory) but improved in the following two months. But
from November onwards it got significantly worse, only 8.1% of the territory
was then in a condition considered normal, going to 6.3% in December, that is,
getting even worse.
From January of this year, the entire continent entered a
drought regime, until today. Since then, extreme drought and severe drought
have predominated, except for March and April when the drought was
predominantly moderate.
According to the IPMA source, having areas of the continent
in drought since the beginning of the hydrological year is a “recurring
situation”, especially in the southern region.
This year the month of March had above normal rainfall, both
in the northern region (approximately 130%) and in the southern region, with
approximately 200%.
According to the IPMA, rainfall has even been recorded monthly
throughout the territory during the current hydrological year.
“What happens is that the values are very low compared to
what we consider normal, that is, an insignificant amount of precipitation when
we are in a situation of persistent precipitation deficit”.
Besides the problems the heatwaves cause for us humans, what really worries me is the terrible effect the heat and drought must be having on wildlife, with amphibians, in particular, being really badly threatened. Many species are already declining in numbers and this spring there was a shortage of freshwater for them to breed in. Temporary pools these creatures depend on failed to form or dried up quickly.
By Steve Andrews from Other on 15 Aug 2022, 12:23