Click here to launch an interactive online version of this notebook:

Was Hurricane Dorian related to Spanish floods of Sept 2019?

Global: GFS analyses at 1 degree (500mb Z and vorticity)¶

Regional: GEOS-5 analyses at 1/4 degree and surface stations¶

Notebook from the Earthcube-supported DRILSDOWN project¶

This is a DRILSDOWN project notebook, capturing images from an IDV analysis. To reproduce or operate this Jupyter notebook, you need to have installed The IDV, Anaconda, and set up a few necessary things for the DRILSDOWN package, as explained at https://unidata.github.io/drilsdown/quickstart

Sections within this notebook¶

The story, with Web and journalism links
The meteorology: large-scale 2D flow evolution
The meteorology: close up in Spain (GEOS-5 analysis and surface data)

The story, with Web and journalism links:

Terrible floods in eastern Spain after hurricane Dorian hit Canada. Any connection?

</ul>

The meteorology, with IDV images:

Dorian merges with extratropical vort500 Sept. 8 00-12Z
Downstream ridge + trof amplify
Trough cuts off Sept 10 0-12Z into Mediterranean latitude
Cutoff becomes stationary as it + ridge rotate into blocking configuration
Floods on Spain’s east coast with onshore winds, cool-core/lifting effects

</ul>

[4]:

%reload_ext ipython_IDV

Loop without annotation¶

[4]:

%make_movie -capture legend -caption 'Loop without annotations'

../../_images/examples_Weather_Event_Case_Study_Dorian_Spain_downstream_development_6_0.png

[7]:

%make_movie -capture legend -caption "DORIAN's midlatitude merging. Prior trof over Europe deep but sweeps out."

../../_images/examples_Weather_Event_Case_Study_Dorian_Spain_downstream_development_7_0.png

[9]:

%make_movie -capture legend -caption 'post-Diorian trof builds ridge builds trof: downstream development?'

../../_images/examples_Weather_Event_Case_Study_Dorian_Spain_downstream_development_8_0.png

[11]:

%make_image -capture legend -caption 'This trof cuts off and retrogrades under ridge to its west'

../../_images/examples_Weather_Event_Case_Study_Dorian_Spain_downstream_development_9_0.png

[13]:

%make_image -capture legend -caption 'Blocking-like dynamics of mutual advection by opposite vortices'

../../_images/examples_Weather_Event_Case_Study_Dorian_Spain_downstream_development_10_0.png

[14]:

%make_movie -capture legend -caption 'Five 12-hour frames with onshore flow in Spain'

../../_images/examples_Weather_Event_Case_Study_Dorian_Spain_downstream_development_11_0.png

[11]:

%make_movie -capture legend -caption 'Absolute vorticity roughly conserved down from Ireland? Sort of'

../../_images/examples_Weather_Event_Case_Study_Dorian_Spain_downstream_development_12_0.png

[12]:

%make_movie -capture legend -caption 'Relative vorticity certainly increases down from Ireland'

../../_images/examples_Weather_Event_Case_Study_Dorian_Spain_downstream_development_13_0.png

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## The meteorology: closer view of Spain and North Africa

Note: This IDV bundle uses GEOS-5 data at 1/4 degree, because it doesn’t have GFS’s longitude seam at 0E. dods://opendap.nccs.nasa.gov/dods/GEOS-5/fp/0.25_deg/assim/inst3_2d_asm_Nx

[5]:

%make_image -capture legend -caption 'Some vapor drawn across Sahara by long-persisting v wind. Topography in contours'

../../_images/examples_Weather_Event_Case_Study_Dorian_Spain_downstream_development_17_0.png

[6]:

%make_movie -capture legend -caption 'Surface stations, FWIW'

../../_images/examples_Weather_Event_Case_Study_Dorian_Spain_downstream_development_18_0.png

[7]:

%make_movie -capture legend -caption '800mb back trajectories, and Z850, with column vapor field'

../../_images/examples_Weather_Event_Case_Study_Dorian_Spain_downstream_development_19_0.png

[8]:

!date

Sun Sep 15 15:45:29 EDT 2019

[2]:

%make_image

UsageError: Line magic function `%make_image` not found.

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