The Latitude Rainfall Challenge
The whole list is now complete though not finished as there are certain to be omissions and errors. Again to say that this is not intended to be authoritative or definitive, corrections and suggestions are welcome and with a link to any useful online sources. I hope this is of some interest given the work involved ;)
This would not have been possible without, http://wmo.asu.edu/ and the numerous national meteorological office websites as well as the British Antarctic Survey plus another source I found purely by chance http://www.globalbioclimatics.org/ and on paper form old climatic data tables published by the Meteorological Office gave me a lot of clues where to seek the driest and wettest areas.
Thanks Rupert, ideally I would have used 1971 - 2000 data for everywhere but it just wasn't possible track them down easily, some of the places I managed to get data for relate to 50 years and other to far less - even the WMO site is inconsistent with respect to the periods it uses.
Sorry again for the mistakes.
Thank you for the information and the link to the document, it is true I had some difficulty getting exact rainfall totals for La Réunion, in fact the Takamaka total came from 1949 - 1953 only, nowhere could I get 30 year climate data for the wettest stations. Météo-France may have more information but I only find a reference to a book which one has to buy. Anyway it is clear the the island is the wettest place in this latititude thanks to the extremely heavy short duration rainfalls.
So, for the next update to the table I will add Hauts de Sainte-Rose in place of Takamaka.
Thanks - good find :)
I should repost these tables soon with the revisions...
Thanks again, that looks reliable, at least it tallies with the figure I got for Ningerum. Pity it doesn't give the dates for the data series, but I found a figure of 8 929 mm sourced from the Australia BOM for 1962 - 1989 though so I'll go with that for now.
Another revision on the way soon...
Dave's good if you put the link, it seems that 9000 mm is an acceptable approximation precipitation average in Wabo.
Well, turning to another issue I think in the mountains near the coast of Parana state, there may be a place with precipitation exceeding 3000 mm per year.
on this map would be the area that is east of Curitiba
Particular place is called Veu de Noiva, at an altitude of 683 meters and 25.26 south latitude, in the municipality of Morretes,
annual precipitation: 3,600 mm
“Mean annual rainfall at the Véu de Noiva meteorological station (2.55 km far from the plot, 25°26' S, 48°57' W, 680 m in elevation) is 3,601.6 mm. The wettest season is from September to March (monthly mean: 377.34 mm) with a less humid one from April to August (monthly mean: 194.39 mm). In the driest season there is no water deficit. The mean air humidity of the municipality of Paranaguá (approximately 42 km E of the plot, at sea-level) is 85% and in the municipality of Curitiba (approximately 32 km to the W, 908 m in elevation) is 82%. It is believed that humidity is even higher at the study site probably due to orographic rains and constant fog (personal observation). The mean annual temperature, calculated according to Maack's formula (Maack 1968), is 18.1 °C. There are no data on temperature at this altitude, only at 908 m (16.5 °C, Curitiba) and at sea-level (21.1 °C, Paranaguá). “
changing the subject pogo two links which are the location of the stations in Reunion Island, which politically belongs to France, almost no data are only the place of the stations and another with maximum daily precipitation in 2008 and the days of precipitation that year.
Regarding the links for La Reunion, the first is for the moth of March and does give 1971 - 2000 averages too - if only they put on line the whole year or even every month so we could work it out...
Hello, mountainous area near the ocean, also appears to have more rainfall than 5700 mm of Port Walter, although not the same few colors on a map that measured values of a meteorological station.
but from 7001 mm to 13000 mm gray areas, would be a big mistake but I had some reason to
I had a look again at the Alaska and Yukon Territory 30 year records but it seem there are no recording stations in that area ( which is extremely mountainous, between 5 000 and 6 000m asl ). In fact the Yukon stations inland have a distinct rain shadow with very low rainfall relatively, and the coastal strip is no more wet than Little Port Walter. So we can say I think that 5 700 mm/yr is likely to be exceeded by rainfall from orographic forcing but the totals are only an estimate - unless anyone has concrete information.
Although perhaps something similar happens in Alaska to New Zealand more rainfall areas are between 200-900metros.
Well going to another topic, Puerto Eden is a different place Guarello island, eden port the annual rainfall is 3600 mm, is located a little further north, Guarello island is 50 degrees latitude.
that perhaps elsewhere in the latitude between 5 º -15 º can be Pisco at 13 ° of latitude with an annual rainfall in the period 1950-1991 of 2.5 mm.
and in the 1942-1990 period 1.6 mm
You are right about Puerto Edén, I have no idea now where I found that information. The document http://www.ieb-chile.cl/publications/pdf/Moreno%20et%20al%201999%20Geogr%20Ann.pdf (see page 6) states 7330 mm/yr at Isla Guarello 50° 21'S, and also 7000mm by http://www.dgf.uchile.cl/PRECIS/articles-39442_pdf_Estudio_texto.pdf page 12.
Good find about Pisco for the 5 to 15°S latitude band. Time for another redraft soon then :)
precipitation shown on wikipedia is somewhat low only 116 mm, correponde the period 1951-1960, which was somewhat dry, this other page is a longer period of 20 years and may be about 130 mm per year
also may serve Sarmiento, a town of 8000 inhabitants
Código de Estación: Ct_022 - Nombre: Cerro Cóndor Gob.
Longitud (°): -69,18 - Latitud: -43,35 - Altura: 250
Registro Un. Período Conf. Ene Feb Mar Abr May Jun Jul Ago Sep Oct Nov Dic Anual
Precipitación mm 48-69 2 2,83 9,75 6,24 5,40 17,02 10,86 5,19 6,02 6,62 3,93 1,30 11,76 86,91
Department Rio negro
Código de Estación: Rn_005 - Nombre: Bajada Colorada
Longitud (°): -69,73 - Latitud (º): -39,85 - Altura (msnm) : 440
Registro Un. Período Conf. Fuente Ene Feb Mar Abr May Jun Jul Ago Sep Oct Nov Dic Anual
Precipitación mm 37-59 2 Hidronor 6,82 2,15 3,58 7,78 19,26 15,73 12,55 8,90 7,45 5,63 4,90 4,93 99,67
respect to the annual record of annual rainfall in Europe, I think someone had a confusion with the names as Crkvice Crkvice or something is a name common in Slavic languages, so that name can be found in Croatia, Bosnia, Montenegro, etc.
Not only is there confusion with the name of the country, if Crkvice is in Bosnia or Montenegro, also matches the latitude and longitude, and altitude.
at latitude 1 ° difference is further north
320 meters in height.
4.648mm (183.0") 22 years Crkvica, Bosnia- Hercegovina 43°54'N, 17°43'E 1310m (4298 ft)
42°34'00?N 18°38'00?E: MONTENEGRO
That part of the record according to the geographical coodenadas would be very close to Sarajevo
Sarajevo (dark green, center)
Coordinates: 43°52'0?N 18°25'0? E
And according to the map of annual precipitation is in the Weather Service of Bosnia, there are places with high rainfall, only puts more than 2000 mm and the area of Sarajevo, is much lower