July 2003 in Athens
 

Here are some data for Terpsithea, Glyfada, in SE Athens (37.894N, 23.768E,
148 m amsl) for July 2003. Average temperature comparisons are to the
1994-2002 data, while precipitation comparisons are to the estimated
1961-1990 values for this site.

A) Air Temperature

Abs. min. temperatu +20.6C (10) | max min: +26.8C (19)
Abs. max. temperatu +38.9C (4&5) | min max: +30.3C (8)
Average diurnal range: 10.7C
Avg. min. temperatu +23.4C (-0.1)
Avg. max. temperatu +34.1C (+0.5)
Avg. temperatu +28.7C (+0.2)

No air or ground frost days.

B) Air relative humidity

Average value: 39.7%

C) Precipitation

No rain day ( 0.1 mm)
Monthly precipitation: 0.0 mm (0.0%)
De Martone index: 0
Thunderstorm days: 0
Hail days: 0

D) Peak wind gust

52.9 kph (NE, July 25)

E) Sunshine

334.62 h (E. Athens, Zografou)
376.9 h (S. Athens, Elliniko)

=======
Comments
=======

This July has been normal, without any extremely high or low temperature
readings for this time of the year. Absolutely no rain was recorded, as has
been the case during 42% of all Julies during the last 34 years in Athens.

All available -daily and aggregate- data for the month that just ended can
be found on http://dias.aueb.gr/~ikarag/everyday/july03.html). Climatic data
for July can be found on
http://dias.aueb.gr/~ikarag/climate/terpsithea-en.html.

Yannis Karayannis, reporting live from Terpsithea Glyfadas, SE Athens, for
usw
http://dias.aueb.gr/~ikarag

July 2003 in Athens
 

"Yannis" wrote in message
...
Here are some data for Terpsithea, Glyfada, in SE Athens (37.894N, 23.768E,
148 m amsl) for July 2003. Average temperature comparisons are to the
1994-2002 data, while precipitation comparisons are to the estimated
1961-1990 values for this site.

A) Air Temperature

Abs. min. temperatu +20.6C (10) | max min: +26.8C (19)
Abs. max. temperatu +38.9C (4&5) | min max: +30.3C (8)
Average diurnal range: 10.7C
Avg. min. temperatu +23.4C (-0.1)
Avg. max. temperatu +34.1C (+0.5)
Avg. temperatu +28.7C (+0.2)

No air or ground frost days.

B) Air relative humidity

Average value: 39.7%

C) Precipitation

No rain day ( 0.1 mm)
Monthly precipitation: 0.0 mm (0.0%)
De Martone index: 0
Thunderstorm days: 0
Hail days: 0

D) Peak wind gust

52.9 kph (NE, July 25)

E) Sunshine

334.62 h (E. Athens, Zografou)
376.9 h (S. Athens, Elliniko)

=======
Comments
=======

This July has been normal, without any extremely high or low temperature
readings for this time of the year. Absolutely no rain was recorded, as has
been the case during 42% of all Julies during the last 34 years in Athens.

The high anomallies in sea surface temperatures have not moved from the
west to the east of the Mediterranean. France is getting the high
temperatures
but Greece seems to have escaped them so far. It will be interesting to
see what happens in August.

Cheers, Alastair.

July 2003 in Athens
 

"Alastair McDonald" k
schreef in bericht ...
The high anomallies in sea surface temperatures have not moved from the
west to the east of the Mediterranean. France is getting the high
temperatures but Greece seems to have escaped them so far. It will be
interesting to see what happens in August.

I recall the 1995 summer where the Mediterranean SST's gave about the same
image as it is now.
High anomalies concentrated around Italy in the Ionean sea and Thyrenean
Sea.
It brought heavy storms during the late summer in Southern Italy.

http://www.knmi.nl/organis/wm/rdw/en/EU_en.html

http://tinyurl.com/aqh3

Wijke

July 2003 in Athens
 

It will be interesting to
see what happens in August.

Cheers, Alastair.

I like Philip's (not the) forecast for August, it could be a very
interesting August in SE Europe if the flow is mainly anticyclonic over N
Europe.

Yannis, Athens
+30.9C, RH 53%

July 2003 in Athens
 

Hey, Yannis
What's this "De Martone" index, you also mention at your site, about?

Hey Wijke,

it's an index of dryness actually, calculated by the formula:

I = P/(10+T) for the annual de Martone index, where P stands for annual
precipitation and T fot the annual mean temperature, or
I'=12P'(10+T') for the monthly de Martone index, where P' is the monthly
precipitation and T' the monthly mean temperature.

It is said that de Martone index values lower than 20 account for the
necessity of watering the soil. The de Martone index is one of the many that
have been internationally proposed for 'counting' how dry or wet an area is.
It is easy to use and calculate, as all weather stations provide with
temperature and precipitation data.
The annual de Martone index for my site stands at 15, with monthly values
varying between 1.8 in June and 38.3 in December. More climatic data for my
site can be found on the newly updated
http://dias.aueb.gr/~ikarag/climate/terpsithea.html.

Yannis, E. Athens
+31.2C, RH 38%

July 2003 in Athens
 

More climatic data for my
site can be found on the newly updated
http://dias.aueb.gr/~ikarag/climate/terpsithea.html.

Or, to help you out with the language,
http://dias.aueb.gr/~ikarag/climate/terpsithea-en.html. Sorry for that.

Cheers,

Yannis.

July 2003 in Athens
 

"Yannis" schreef in bericht
...
it's an index of dryness actually, calculated by the formula:

I = P/(10+T) for the annual de Martone index, where P stands for annual
precipitation and T fot the annual mean temperature, or
I'=12P'(10+T') for the monthly de Martone index, where P' is the monthly
precipitation and T' the monthly mean temperature.

It is said that de Martone index values lower than 20 account for the
necessity of watering the soil. The de Martone index is one of the many
that have been internationally proposed for 'counting' how dry or wet an
area is. It is easy to use and calculate, as all weather stations provide
with temperature and precipitation data.

Thank you for explaning, Yannis. I have been puzzling with some ppn-figures
of the past; and indeed its a good and easy indicator to estimate either
waterdeficiency or water-surplus!
But only as long as the index has some value 0. When ppn is zero; the
index is zero and tells nothing about the waterdeficiency.

Here's the currently (so-called) "water-surplus" map of the Netherlands of
the period april 1 till now -- only the blue spots give a watersurplus --
the rest is coloured with waterdeficiencies.
http://www.knmi.nl/voorl/kd/produkt/...overschot.html

The values at the map are calculated as the ppn minus the evaporation at
several sites across the country.

Oh, well, we're not the only place in Europe with a lack of water.

Wijke

August 2003 in Athens
 

Ï "Alastair McDonald" k
Ýãñáøå óôï ìÞíõìá ...

| Hi Yanni,
|
| The hot weather in the western Med. does not seem to have moved east.
| Your temps. seem to be up by about 1C, the same as in the UK, whereas
| France was up by 7 or 8C. Rather than moving east, as the cyclones do
| over the UK, it seems that there was a blocking high, which has sat there
| and not budged.

This September seems to have some things in common with last November, when
the main low pressure areas would develop over the central Med, sending
occasional 'wet' troughs ESEwards. Hopefully, things won't prove to be too
different this month.

Yannis.