1 11-13 April 20112 nd IBTrACS Workshop IBTrACS Version 3 Updates and Plans.

111-13 April 20112nd IBTrACS Workshop

IBTrACSVersion 3

Updates and Plans

11-13 April 20112nd IBTrACS Workshop 2

Background◦ Versions◦ Access

Issues◦ Naming◦ Storm Spurs◦ Treatment of older storms

Open time for Questions and Answers

315-20 Nov. 20107th IWTC, La Reunion Island

14 sources 31,002 total tracks 500,000+

observations

~11,774 storms 6757 TCs with MSW>30

1848-2009 1907-2009

1842-2009

1884-2009

1949-2009

1851-2009

1848 - 2009


BoM1,614,1906,1,,S,,190701172300,,,,130,1465,,994,,,WW,,,,,,,,,,,,,,,,,,,,,,,,,20,11,1907,1,17,23,0,01/17/1907 23:00:00,,,,3690.00000000524,62442,614,1906,1,,S,,190701182300,,,,150,1450,,993,,,WL,,,,,,,,,,,,,,,,,,,,,,,,,27,13,1907,1,18,23,0,01/18/1907 23:00:00,1440,,,2520,211183,614,1906,1,,S,,190701192300,,,,140,1430,,993,,,LL,,,,,,,,,,,,,,,,,,,,,,,,,30,4,1907,1,19,23,0,01/19/1907 23:00:00,1440,,,2160,2282

CMA/STI66666 0000 32 0025 0822 0 6 Dolphin 200904182008121100 1 125 1471 1002 152008121106 1 126 1450 1002 152008121112 1 128 1433 1002 15

CPHC2003 TROPICAL DEPRESSION 01-C,,,,,,,,,08/15 / 1800,13.6,151,1009,30,,,,,16 / 0000,13.9,152.9,1009,30,",,,,16 / 0600,14.2,154.4,1009,30,",,,,

HKOTCNAME YYYYMMDDHH(UTC) INTENSITY …RITA 1961011406 TD 79 1355 1003 25RITA 1961011412 TD 82 1343 1002 25RITA 1961011418 TD 88 1334 1001 25

JTWC – ATCF formatWP, 12, 2008081218, , BEST, 0, 224N, 1343E, 15, 1010, DB, 0, , 0, 0, 0, 0, WP, 12, 2008081300, , BEST, 0, 226N, 1335E, 15, 1010, DB, 0, , 0, 0, 0, 0, WP, 12, 2008081306, , BEST, 0, 231N, 1328E, 15, 1006, DB, 0, , 0, 0, 0, 0, 1009, 150, 25, 0, 0, W, 0, , 0, 0, INVEST, S, WP, 12, 2008081312, , BEST, 0, 237N, 1325E, 15, 1006, DB, 0, , 0, 0, 0, 0, 1009, 150, 25, 0, 0, W, 0, , 0, 0, INVEST, S,

NadiNAME YYYY MM DD HHHH LAT LONG PRES W(KT) Catergory=========================++++++++++++=======================DAMAN 2007 12 03 0000 12.0 -174.5 1004 15 Tropical Depression (TD) PhaseDAMAN 2007 12 03 0600 12.1 -175.0 1004 15DAMAN 2007 12 03 1200 12.3 -175.5 1004 15

Neumann, HURDAT00005T07/15/1960 M= 7 1 SNBR= 1 HSK0161 BSH0161 JTWC&NCDC00010 07/15 * 60 970T 25E * 66 964T 25E00015 07/16* 72 958T 20E * 78 951T 20E * 85 945T 25E * 93 939T 25E00020 07/17*102 934T 25E *113 929T 25E *125 925T 25E *149 925T 25E00025 07/18*173 930T 30E *192 936T 30E *210 945T 30E *234 961T 30E

IMD04/05/1990,0000, 8.5,87.0,1.0,1006, 16, 2,,1006,7,04/05/1990,0600, 8.5,87.0,1.5,1002, 25, 4,,1006,10,04/05/1990,1200, 9.5,87.0,1.5,1000, 25, 4,,1004,5,

Reunion – Old Formatxxxx84800118480301062114 2 755 999999911099999904xxxx84800118480302062117 2 740 999999911099999904xxxx84800118480303062144 2 646 999999911099999904

Reunion – New WMO Format11SWI2006152006200720070409122217102036918210100151100209910109299959999999999999999999499999999999999999994010411SWI2006152006200720070409182219122038011210100151100209910099299959999999999999999999499999999999999999994010411SWI20061520062007200704100022240820390121151502011003099100892999599999999999999999994999999999999999999940204

NCDC TD-9636149991989101016121320109453019210 0202519 0081471 0 150001989101016181338109383019318 015 999 1 01150011989111128121171108401517219 025 999 0 0

JMA66666 0822 031 0030 0822 0 6 DOLPHIN 2009011608121106 002 2 125 1452 1000 000 08121112 002 2 128 1436 1002 000 08121118 002 2 130 1423 1000 000

WellingtonName,Year,Month,Day,Time,Lat,Lon,PPP,Max,ProgGISELE,1968,4,3,0000,8,156.4,1002,25,H+000GISELE,1968,4,3,1200,7.4,157.6,1002,25,H+000GISELE,1968,4,4,0000,7,159,1002,25,H+000

DiamondHD-1986-04,1986-03-05T00:00:00.0, -18.7455, 173.0290, 1 HD-1986-04,1986-03-05T00:00:00.0, -19.0438, 173.3770, 2HD-1986-04,1986-03-05T00:00:00.0, -19.3420, 173.7240, 3

515-20 Nov. 20107th IWTC, La Reunion Island

Multiple intensities possible 1 intensity per report

netCDF CSV

WMO HURDAT ATCF cXML GIS shapefile

Ver

. 1

Ver

. 1 Mean position

Mean intensityMean position JAOTMean intensity Kruk et al., 2010

Ver

. 2

Ver

. 2 Mean position BAMS

Mean intensity Knapp el al., 2010

Mean positionMean intensityOriginal positions & intensity

Ver

. 3

Ver

. 3 Original positions & intensityOther parameters as available

WMO position In prep.WMO intensity


http://www.ncdc.noaa.gov/oa/ibtracs/ Google: IBTrACS


Problem◦ Difficulty in comparing inhomogeneous datasets◦ How to compare Major storms? Cat 5 storms?

Etc.?

Unify data?◦ Convert agencies back to a certain wind speed?◦ IBTrACS has 10, 3, 2 and 1 minute winds◦ Conversions aren’t necessarily linear.


Potential for intercomparing storms: percentiles

Calculations …◦ Based on Percentiles of 1980-2009◦ Separate for wind and pressure◦ Per agency/basin

Are percentiles appropriate when looking at damage to manmade structures?

Are percentiles appropriate when looking at damage to natural habitats?


Two Problem◦ How to determine if two tracks are the same

storm?◦ How to name/identify a particular storm


YYYYJJJHTTNNN ◦ YYYY = year of 1st record◦ JJJ = day of year◦ H = hemisphere (N or S)◦ TT = Latitude◦ NNN = Longitude (range 0-359)

Serial # - Name Cross Reference1985237N21130 bwp141985(jtwc_wp) - RUBY(tokyo) - RUBY(cma) - RUBY(hko) - NOT NAMED(td9636) 1985240N08148 bwp161985(jtwc_wp) - TESS(tokyo) - TESS(cma) - TESS(hko) - NOT NAMED(td9636) 1985240N09198 bwp151985(jtwc_wp) - SKIP(tokyo) - TWO-C / TROPICAL STORM SKIP(cphc) - SKIP(cma) - SKIP(hko) - NOT NAMED(td9636) 1985240N16256 PAULINE(hurdat_epa) - bep161985(jtwc_ep) - PAULINE(cphc) - NOT NAMED(td9636) - bep161985(atcf) 1985240N20286 ELENA(hurdat_atl) - bal051985(atcf) 1985244N14254 RICK(hurdat_epa) - bep171985(jtwc_ep) - RICK(cphc) - NOT NAMED(td9636) - bep171985(atcf) 1985244N27124 (NAMELESS)(cma) 1985249N13265 SANDRA(hurdat_epa) - bep181985(jtwc_ep) - NOT NAMED(td9636) - bep181985(atcf)


Serial # - Strengths◦ Unique for each storm

Serial # - Weaknesses◦ Depends on starting location and date … which

can change◦ May not be consistent from version to version

Suggested improvement?


120+ registered users Kudos

◦ “Even though IBTrACS is still evolving, your efforts at homogenization on a global scale are very important.”

◦ “Congratulations for getting this complete and publicly available! Keep up the great work!”

Feedback◦ Error corrections◦ Parameter requests – radius maximum winds, etc.

Contact Us at [email protected]@noaa.gov


Include more variables◦ “If they provide it, so do we”◦ ROCI, RMW, Eye Diameter, T num, CI, …

Include non-developing storms◦ Forecast aid development

Document tropical cloud clusters Other agencies as available


Spur – definition◦ a short or stunted branch or shoot, as of a tree.

Split?

Merger?


Definitions on how tracks are identified …◦ Cycloslois – A track that simply ends◦ Cyclogenesis – A track that simply begins◦ Split – A track that begins, but the track

originatesfrom another storm

◦ Merger – A track that ends as it converges with anotherstorm

Track types are defined by how they begin and end:◦ Start End Type◦ Cyclogenesis Cyclolosis Main◦ Cyclogenesis Merger Spur-Merger◦ Split Cyclolosis Spur-Split◦ Split Merger Spur-Alternate


Main

Merger

Split

Alternate


Spurs …◦ … confuse users◦ … make counting storms difficult

Solutions?◦ Ignore all spurious spurs

If life of spur < threshold (2 days?), don’t list◦ Keep all tracks associated with a storm together?

Might lost some storms


Many storms rescued by digitization of Atlases

Some had QC some not Issues include

◦ Starting dates


Same storm, but repeated due to timing issues


Same storm, but different resolutions◦ Daily◦ 12-hourly


How should storms be named?◦ Is there an alternative to a serial number?◦ A better serial number?

How should spurs be handled?

What aspect of IBTrACS causes the most confusion?

What improvements are needed most?

1 11-13 April 20112 nd IBTrACS Workshop IBTrACS Version 3 Updates and Plans.

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Transcript of 1 11-13 April 20112 nd IBTrACS Workshop IBTrACS Version 3 Updates and Plans.