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Circulatia generala a atmosferei
https://forum.meteorologie.ro/general-climatologie/circulatia-generala-atmosferei-t1644-15.html
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Autor:  Roberta 93 [ Vin Apr 19, 2013 5:11 pm ]
Subiectul mesajului:  Re: Circulatia generala a atmosferei

Wind trend.
Imagine

Autor:  Roberta 93 [ Mie Apr 24, 2013 10:06 pm ]
Subiectul mesajului:  Re: Circulatia generala a atmosferei

http://www.gly.uga.edu/railsback/Fundamentals/SFMGAtmPressureHighs&Lows01.jpg

Autor:  Roberta 93 [ Joi Apr 25, 2013 2:36 pm ]
Subiectul mesajului:  Re: Circulatia generala a atmosferei

Efectul Coriolis
Imagine
http://www.cleonis.nl/physics/phys256/coriolis_in_meteorology.php
http://www.aos.princeton.edu/WWWPUBLIC/gkv/history/Persson98.pdf

Autor:  Roberta 93 [ Lun Apr 29, 2013 4:50 pm ]
Subiectul mesajului:  Re: Circulatia generala a atmosferei

Vantul, scara Beaufort..
http://www.eoearth.org/article/Wind

Pentru a calcula efectul vantului asupra obiectelor se foloseste formula simpla F=ksv la patrat inmultit cu sinus de i.
In care k e o constanta, egala cu 0,125
s suprafata obiectului
V viteza vantului
i = sinusul unghiului de incidenta al vantului fata de suprafata.
(Pentru cei ce se sperie cand vad in ochi sinus...e simplu:
Sinus de 45 grade, e 0,50, adica pe jumatate din 1.
Sinus de 22,5 grade (pe jumatate din 45) va fi, evident...jumatate din 0,50
Si asa mai departe, incat si babeste aflam cat e sinus de un grad.
Stiind cat e sinus de un grad, automat vom sti cat e sinus de o zecime, o sutime sau chiar o miime de grad daca e cazul...Si cosinusul va fi diferenta...astfel incat suma sinus-cosinus va da mereu 1.)

Asa am facut o girueta si cu o placuta cantarita bine, am putut sa-i fac scala.
Ii pusesem si o elice frumoasa, iar teava o vopsisem in spirala, alb cu rosu. Am dat cu o culoare, iar dupa ce s-a uscat, am infasurat scotch in spirala, apoi am aplicat a doua culoare. S-a rupt la un vant, dar dupa vreo doi-trei ani de functionare.
Un vecin ii zicea "cocostarc". Arata ca o pasare cu ampenajul ce o orienta pe directie.

Placutele au dimensiuni si greutati standard, placutele giruetelor. Stiu ca am facut dupa standard, dar am uitat dimensiunea. Parca 250 grame era greutatea unei placute, iar cealalta de 500 grame, ambele cu aceeasi suprafata.
Cred ca 10 cu 15 centimetri aveau laturile placutele mele.
Si scala era o tabla care la randul ei ajuta ca si deriva.

Autor:  Roberta 93 [ Mar Apr 30, 2013 2:00 pm ]
Subiectul mesajului:  Re: Circulatia generala a atmosferei

Alt material de studiu obligatoriu pentru mine:
Circulatia Walker.


http://www.google.ro/search?q=walker+circulation&hl=en&tbm=isch&tbo=u&source=univ&sa=X&ei=AH5_UY6wLoadO-HogIAD&sqi=2&ved=0CDMQsAQ&biw=1024&bih=638

Sir Gilbert Walker - The Walker Circulation was named after the man who first predicted that weather is a global phenomenon (thanks to University of Washington)
http://library.thinkquest.org/20901/overview_2.htm

Totusi trebuie sa demonstrez ca mai lipseste ceva. Acel ceva care identifica o tendinta climatica, indiferent in ce sens. Cald, uscat, rece, umed...

Autor:  Roberta 93 [ Joi Mai 02, 2013 9:30 pm ]
Subiectul mesajului:  Re: Circulatia generala a atmosferei

ftp://dossier.ogp.noaa.gov/GCOS/Publications/Wind/2004JD004763.pdf
ftp://dossier.ogp.noaa.gov/GCOS/Publications/Wind/66.Keith.2004.WindAndClimate.e.pdf

Si ge griji isi fac...
ftp://dossier.ogp.noaa.gov/GCOS/Publications/Wind/RooijmansMesoscale.pdf

Autor:  Roberta 93 [ Joi Mai 09, 2013 3:22 pm ]
Subiectul mesajului:  Re: Circulatia generala a atmosferei

Hmmm...gravity waves (or internal waves)
http://onlinelibrary.wiley.com/doi/10.1002/qj.637/full

Autor:  Roberta 93 [ Vin Iun 14, 2013 5:14 pm ]
Subiectul mesajului:  Re: Circulatia generala a atmosferei

http://www.dvfu.ru/meteo/library/20720001.pdf
Siberianul, iarna...

Autor:  Roberta 93 [ Dum Oct 27, 2013 8:12 pm ]
Subiectul mesajului:  Re: Circulatia generala a atmosferei

http://www.ncdc.noaa.gov/teleconnections/

Autor:  Roberta 93 [ Lun Mai 26, 2014 12:07 am ]
Subiectul mesajului:  Re: Circulatia generala a atmosferei

The Brewer-Dobson Circulation
http://birner.atmos.colostate.edu/bdc.html

Recent analyses of radiosonde data by Thompson and Solomon (2005) indicate for the first time that the annual mean tropical lower stratosphere has cooled over the past few decades. This contradicts previous assessments of the tropical lower stratosphere (e.g., Ramaswamy et al., 2001; WMO, 2003). Although a large number of the tropical radiosondes exhibit systematic cooling biases relative to satellite data (Randel and Wu, 2006), these analyses indicate significant temperature changes in the tropical upper troposphere and lower stratosphere (UTLS). In addition, there are obvious indications in recent simulations with state-of-the-art GCMs and CCMs that stratospheric temperatures may further decrease in future as a result of increasing GHG concentrations. The models demonstrate that stratospheric dynamics could change significantly, in particular that the Brewer-Dobson circulation (BDC; Holton et al., 1995) might accelerate (e.g., Sigmond et al., 2004; Giorgetta and Doege, 2005; Fomichev et al., 2007; Butchart et al., 2006; Eyring et al., 2007), which would have a direct impact on the exchange of air masses between the troposphere and the stratosphere. A common explanation for this behaviour is that climate change leads to an intensification of extra-tropical planetary wave (PW) forcing, propagation and dissipation in the stratosphere (e.g., Rind et al., 2001; Butchart and Scaife, 2001; Salby and Callaghan, 2004; Butchart et al., 2006). The expected changes of PW generation and propagation, particularly in winter, are a major source of uncertainty for predicting future levels of stratospheric composition (Chapter 5 in WMO, 2007).
Tropical upwelling can also be modified by changes of GHG concentrations via variation of net heating rates. Also clouds (i.e. formation, coverage, type, etc.) are directly influenced. Basic investigations of these processes and their feedbacks are rare, comprehensive studies based on CCM simulations are not available so far. Finally, the quasi-biennial oscillation (QBO) is sensitive to changes in the BDC, which affect the balance between wave driving and advective tendencies of the QBO (Giorgetta and Doege, 2005), with possible implications for variations of stratospheric tracers.
http://www.geo.fu-berlin.de/en/met/sharp/state_of_the_art/brewer_dobson.html
https://www.google.ro/search?q=Brewer+Dobson+Circulation+(BDC).&sa=N&es_sm=93&biw=1024&bih=655&tbm=isch&tbo=u&source=univ&ei=s1uCU82OJsH3O-WegKAK&ved=0CE8QsAQ

Autor:  Roberta 93 [ Lun Mai 26, 2014 1:06 pm ]
Subiectul mesajului:  Re: Circulatia generala a atmosferei

Toward understanding the double Intertropical Convergence Zone
pathology in coupled ocean-atmosphere general circulation models


http://atmgcm.msrc.sunysb.edu/papers/Zhang%20et%20al%20ITCZ%202006JD007878.pdf

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