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International Ice Patrol (IIP) Iceberg Sightings Database

Summary

The International Ice Patrol (IIP) collects information on iceberg activity in the North Atlantic. The IIP area of responsibility prior to 2006 was 40 degrees to 52 degrees North latitude and 39 degrees to 57 degrees West longitude. In 2006, the IIP area of responsibility was enlarged to 40 degrees to 65 degrees North latitude and 39 degrees to 57 degrees West longitude. Data files include latitude and longitude of sighted icebergs, coded iceberg size class, date and time of sighting, last date sighted, number of days within the observation area, and several fields pertaining to the iceberg's model-predicted location. The data set begins in 1960; nearly annual updates occur in September or October. The format of the IIP data has changed over the years. NSIDC has generated a merged data format that contains the common fields for the entire period of record. Both the IIP format data and the NSIDC merged format data are available. Data are in ASCII text files.

Citing These Data

The following example shows how to cite the use of this data set in a publication. For more information, see our Use and Copyright Web page.

National Snow and Ice Data Center. 1995, updated annually. International Ice Patrol (IIP) Iceberg Sightings Database. Boulder, Colorado USA: National Snow and Ice Data Center/World Data Center for Glaciology. http://dx.doi.org/10.7265/N56Q1V5R

Overview Table
 

Category Description
Data format Data are in ASCII text files, two formats are available.
Spatial coverage The North Atlantic prior to 2006: 40° N to 52° N, 39° W to 57° W

The North Atlantic 2006 and forward: 40° N to 65° N, 39° W to 57° W
Temporal coverage 1960 to 2011
File size 1.7 KB - 6.2 MB
Parameters Iceberg Size Class
Date and Time of Sighting
Last Date Sighted
Number of Days on Plot
Metadata access View metadata
Data access Data are available via FTP.

Table of Contents

  1. Contacts
  2. Overview
  3. Detailed Data Description
  4. Data Access and Related Collections
  5. References and Related Publications
  6. Acknowledgements
  7. Document Information

1. Contacts

Investigator

Barbara Lis
USCG International Ice Patrol
1 Chelsea Street New London, CT 06320
860.271.2783 (desk)
860.271.2626 (OPCEN)
860.271.2773 (fax)
Barbara.j.lis@uscg.mil
www.uscg-iip.org

Technical Contact

NSIDC User Services
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder, CO 80309-0449  USA
phone: +1 303.492.6199
fax: +1 303.492.2468
form: Contact NSIDC User Services
e-mail: nsidc@nsidc.org

2. Overview

Ships transiting between Europe and east coast ports of Canada and the US traverse a great circle route that brings them into the vicinity of icebergs carried south by the cold Labrador Current near the Grand Banks. It was here that the R.M.S. Titanic sank in 1912, after it struck an iceberg. This disaster resulted in the loss of 1517 lives and led directly to the founding of the IIP in 1914. The mission of the IIP is to monitor iceberg danger near the Grand Banks of Newfoundland and provide the limits of all known ice to the maritime community. The IIP does this by sighting icebergs, primarily through airborne Coast Guard reconnaissance missions; plotting and predicting iceberg drift using a model; and every 12 hours during the ice season, estimating the limit of all known ice. This limit, along with a few of the more critical predicted iceberg locations, is broadcast by radio stations and made available online as an Ice Bulletin. Twice daily, a radio facsimile chart of the area, depicting the limits of all known ice, is broadcast. The IIP broadcasts its products during the time of year that icebergs threaten shipping. This varies, but usually begins in February and ends in July.

NSIDC archives these data for the IIP. Other products, including a scientific bibliography and iceberg limit climatology, are available on the IIP Web site.

In 2010, a data user had questions about the data. NSIDC contacted B. Lis at the IIP for answers. For the convenience of other users, we are including the questions and answers here. (provided by B. Lis, IIP, Jan 2010)

Question 1:
One of the fields is "The percentage melt of the iceberg at the last position of the iceberg before it was either deleted or re-sighted." The values I have seen for this field vary from 0 to quite large values; I have seen some near 300%. How are these percentages to be interpreted, especially values > 100%?

Answer:
a. Values less than 100% are attributed to our reconnaissance "not finding the iceberg", i.e. confirmation that there is no ice in the proximity.
b. Values between 100% and 200% are attributed to model deletions according to IIP's conservative Standard Operating Procedures (SOP).
c. Values over 200% are rare, but there are cases when we have questions (for example, when reconnaissance cannot confirm the lack of ice), that we choose to leave the iceberg in the model, again, according to our conservative SOP.

Question 2:
Is there a way to track an iceberg from one year to the next? Each year's data re-numbers icebergs starting from 1.

Answer:
The icebergs that IIP tracks near the Grand Banks of Newfoundland do not last to the next year; they melt due to the warmer waters of the North Atlantic current, the warmer air temperatures of spring and summer, and destructive wave action over time.

Question 3:
Can you give me a hint, pointer, heuristic, or something that would allow me to: (a) estimate volume in cubic meters from your general size descriptors and (b) estimate volume below the surface versus above the surface?

Answer:
The iceberg size and shape information in the IIP iceberg-sighting database is very coarse and not useful for accurate calculation of the submerged shape or mass of an iceberg. For a discussion of iceberg size and shape, see the paper Determination of Iceberg Draft, Mass and Cross-Sectional Areas (Barker, Sayed, and Carrieres 2004).

There are several other reports on iceberg size and shape at the National Research Council Canada (NRCC) Canadian East Coast Ice Engineering Issues web site.

3. Detailed Data Description

In addition to visual observations from ships and aircraft, the IIP makes use of information from drifting buoys, radar, and side-looking airborne radar (SLAR) as well as model output. In 2006, the IIP began synchronizing its database with the Canadian Ice Center's (CIS) iceberg database so that it contains icebergs seen and tracked by CIS as well as by the IIP. This accounts for an increase in icebergs to 65 degrees N beginning in 2006 in this data set. (Greg Wright, IIP, personal communication 8 Nov. 2006).

Over the period of record, the IIP's seasonal iceberg database has changed format several times. These format changes have included the addition and/or deletion of varying fields. In consultation with the IIP, NSIDC has created a merged or standard format. The NSIDC merged format is based upon the IIP format of 1993-1997 and does not include all parameters contained in all the various IIP formats. The user is advised to investigate which of the two formats (original IIP or NSIDC) suits their particular application. Both are distributed by NSIDC. NSIDC format files have wdc in the file name, while files that have not been reformatted from the IIP format have iip in the filename. They are described separately below. Beginning in 2006, the format for the IIP files can be found in a text file for downloading along with the data files.

IIP files in NSIDC Format

Contents of these data files are as follows:

Column Description
1 Sequential iceberg numbers used by IIP's computer model to label each iceberg. Many numbers are listed more than once. The first listing of an iceberg gives the initial sighting information. Subsequent lines give the times and positions where the iceberg was resighted. "Resighted" is defined as an IIP update of the iceberg position based on new sighting information.
2 The Julian date of the sighted/resighted position for this iceberg entry.
3 The calendar date of the sighted/resighted position for this iceberg entry.
4 The time (UTC) for the sighted/resighted position for this iceberg entry.
5/6 The sighted or resighted position for this sighted/resighted iceberg entry (in degrees and minutes).
7 Reported size of the iceberg. Table 1 decodes the abbreviations.
8 Reported shape of the iceberg. Table 2 decodes the abbreviations.
9 Reported confidence of the sighting data. This represents the means used by the reporting source for identifying the iceberg and its characteristics. Table 3 decodes the abbreviations.
10 This column indicates the type of reporting source. Table 4 decodes the abbreviations.
11 The call sign of the reporting source.
12 Julian date of the last analysis (i.e. computer model forecast) position for this sighting before it is either deleted or resighted.
13 Calendar date of the last analysis position for this sighting.
14 The time (UTC) of the last analysis position for this sighting.
15/16 The last analysis position for this sighting before it was deleted or resighted (in degrees and minutes).

 

Table 1. Size

 

 

Table 2. Shape

 

 

Table 3. Confidence

 

 

Table 4. Source
Code Description Code Description Code Description Code Description
NUL nul NUL
nul NUL nul IBCNn Canada
GBL garbled GBL garbled GBL garbled IBUSn USA
GEN general N/A not applicable R/V radar and visual 1 aircraft
TAR unidentified target U/D undetermined R radar only 2 icebreaker
GR growler TAB tabular V visual only 3 other ship
BB bergy bit NTB non-tabular MEA measured 4 offshore industry
SM small DOM domed EST estimated 5 miscellaneous
MED medium PIN pinnacled SYN synthetic

 

LG large DDK drydock

 

VLG very large FRG fragment
RND randomized BLK blocky

 

RND randomized

IIP files in Native Format

See ancillary documentation provided by the International Ice Patrol in 2006.

Beginning in 2006, a text file with information on that year's data format, if changed from the previous year, is included on the FTP site for the data (for example, 2006_BergList_Key.txt).

The FORTRAN routines extract data. Note that the format of the 1994-1997 is the same as that of 1993, therefore the routine read_93.f applies to these data as well. Note that all routines were developed on an SGI running IRIX 4.0.1 and may require some changes for other operating systems.

Section A: 1960-1991 database

The following fields are included for each record:

Column(s) Description
Iceberg number This field contains a sequential number for each iceberg sighted within each iceberg season (1 October to 30 September).
Sighting Index This is a symbol used by the model to indicate whether the iceberg is a resight of a previous sighting. A "+" is used to indicate the iceberg is an earlier sighting of a resighted iceberg. A "D" is used to indicate the last sighting of an iceberg. In some cases, the first and last sighting of an iceberg are the same.
Resight A "Y" (for yes) or "N" (for no) is entered in this field to indicate whether or not the sighting was considered a resight of a previously sighted iceberg.
Sighting Source This column is used to describe the source that reported the iceberg to Ice Patrol.  This column was first recorded digitally in 1984 and the code was modified in 1989. See Table 1 below for the code used to describe the sighting source.
Sighting Position The latitude and longitude of the sighted position of the iceberg.
Sighting Date The date the iceberg was sighted (MMM  DD,YYYY/HHMM)
Sighting Time The time (in Universal Coordinated Time) of the iceberg
Iceberg Description Ice Patrol uses a simplified code to describe the sighted icebergs. The code is tied to generalized sizes and shapes used by the iceberg drift model. See Table 2 below for the code used to describe the iceberg description.
Last Model Analysis Position The last model predicted position for the iceberg produced using analysis winds before the iceberg was removed from the active list. (An iceberg report can be removed from the active model list by being resighted or deleted by the operator.)
Number of Icebergs represented by sighting record In areas of heavy concentrations, groups of icebergs may be reported together. The number of icebergs in each sighting report is represented in this field.
Days on Plot This field indicates the number of days the iceberg sighting was drifted by the model before being removed from the list of active icebergs.
Date of Last Model Position The date of the position of the last model analysis position.

 

Table 1. Sighting Source
Number 1984-1988 1989 to Present
1 Ice Patrol Aircraft Radar/SLAR Ice Patrol Aircraft/SLAR
2 Ice Patrol Aircraft Visual Ice Patrol Aircraft Visual
3 AES Aircraft Radar/SLAR AES Aircraft Radar/SLAR
4 AES Aircraft Visual AES Aircraft Visual
5 Ship Report - Radar Other Air reconnaissance*
6 Ship Report - Visual Ship Reports
7 Oil Industry Sources Lighthouse/Shore
8 Lighthouse/Shore Defense Department Sources
9 Defense Department Sources Other
0 Other BAPS Iceberg**
X

Unknown

Unknown
* This category includes iceberg sighting reports received from aircraft flying support for the hydrocarbon industry operating on the Grand Banks.
** The Canadian Atmospheric Environment Service (AES) operates an iceberg drift prediction model called BAPS. When icebergs drift south of 52 North they will report the predicted positions to Ice Patrol and Ice Patrol will enter the sighting in the IIP iceberg drift model.

Table 2. Iceberg Description
Code Description
1 Growler (less than 15 meters in length)
3 Small Non-Tabular (between 15 and 60 meters in length)
4 Small Tabular (between 15 and 60 meters in length)
5 Medium Non-Tabular (between 60 and 122 meters in length)
6 Medium Tabular (between 60 and 122 meters in length)
7 Large Non-Tabular (greater than 122 meters in length)
8 Large Tabular (greater that 122 meters in length)
9 Radar Target
If Ice Patrol receives a visual iceberg sighting report without a size, medium is used. If Ice Patrol receives a visual iceberg sighting report without a description, non-tabular is used. Non-tabular includes all iceberg shapes (examples; pinnacle, dry-dock, domed) except tabular.

The Pre-Model Season File Years Portion of the database

This portion of the database covers the years 1960 to 1981. The below comments for each data field apply to this portion of the database:

Code Description
Iceberg Number Although this number is intended to be unique for each ice season, some numbers were duplicated within the same season. All of the duplicate numbers which represent sightings of different icebergs were retained in the database.
Sighting Index This field was left blank.
Resight Prior to about the late 1970s, Ice Patrol made little to no
distinction between resights and new iceberg sightings.
Sighting source  When this portion of the database was  originally placed in computerized format, three source choices were used; USCG Aircraft, USCG Ship, or other.  In merging this portion of the data set, USCG ship reports were encoded as "6" (ship reports).  If the iceberg description was recorded as a radar target and the sighting source was a USCG aircraft, the sighting source was set to "1" (USCG Aircraft Radar/SLAR). If the iceberg description was "non-radar" and the sighting source was a USCG aircraft, the sighting source was encoded as "2" (USCG Aircraft Visual). The "other" category could include lighthouse reports, shipping reports, and reports from commercial aviation.
Sighting Time No sighting times were originally recorded for this portion of the database and the sighting time field was set to 0000.
Last Model Analysis Position  The iceberg drift model was not in use and this position was set to 0 North 0 West.  
Number of Icebergs  Original sightings during this period were classified in different manners with respect to the number of icebergs represented by each sighting.  The following code was used when the data for this period was computerized and the code can be found in Table 1 below.
Days on Plot Set to zero
Date of Last Model Position Set to xxxxxx
Model Years Portion of the database During the early years of the model, not all of the data fields were used.  The below comments for the data field refer to the years in parenthesis.
Iceberg Index (1982-1984) During this period, a problem in the computer program logic occasionally allowed a "D" to placed where a "+" belonged.  The error was carried forward into the database and is not considered critical because of the proper use of the resight data field.
Sighting Source (1982-1983) This field was not used by the model during this period.  In creating the database, the sighting source was set to "X" (Unknown) for these records.
Number of Icebergs (1982-1985) This field was not used in the model during this period.  In creating the database, this field was set to 1 for these records.

Table 1. Number of Icebergs 
Code Description
1 Unknown
2 Numerous
3 Many. If the actual number of icebergs the record represented was known, that number was entered. This number could be 1, 2, or 3. After about the mid-1970s, one record generally represented a single iceberg. When this portion of the database was being entered, the original entry for the number of icebergs represented by the record was carried forward unless the number was greater than 20. In that case, the number of icebergs for the record was questionable and the number was set to one.

Section B: 1992 Iceberg File Format
 

Code Description
BERG Iceberg number "+", "D", or "X" following iceberg number indicates iceberg record was a re-sight or the information has been updated. "D" or "X" indicates the last resighted information for that iceberg in the file.
SCD Source of the sighting information, based on Table 1 below:
SITED POSITION Latitude and longitude (degrees, minutes to hundredths) of iceberg sighting
SITED TIME Date (MMM DD/HHMM) of iceberg sighting; times are GMT.
DESC Size and type of iceberg, based on Table 2 below:
LAST ANAL POS Last position provided by IIP iceberg prediction model for this iceberg
PREDICTED POSITION This field is not defined in the documentation
DOP Number of days-on-plot for the iceberg before deletion or resighting
OFF PLOT Date the iceberg was taken off plot or resighted
Note:  DOP and OFF PLOT are described in the documentation but may not appear in the 1992 data file.

Table 1. Source of the Sighting Information   Table 2. Size and Type of Iceberg
Code Description Code Description
USCG SLAR  GROWLER
2 USCG VISUAL  2 SMALL, PINNACLE
3 CANADIAN AES SLAR  3 SMALL, TABULAR 
4 CANADIAN AES VISUAL   4 MEDIUM, PINNACLE 
5 COMMERCIAL AIR RECONNAISSANCE 6 MEDIUM, TABULAR
6 SHIP REPORT 7 LARGE, PINNACLE
7 LIGHTHOUSE/SHORE 8 LARGE, TABULAR
8 NAVPOLAR (U.S. NAVY) 9 RADAR CONTACT
9 OTHER  
0 BAPS BERG

 

Section C: Annual Iceberg File Format, 1993-1997

The following describes the data in the International Ice Patrol's (IIP) seasonal (annual) iceberg listings, beginning with 1993:

Column(s) Description
1

Sequential iceberg numbers used by IIP's computer model label each iceberg. Many numbers are listed more than once. The first listing of an iceberg gives the initial sighting information. Subsequent lines give the times and positions where the iceberg was resighted. "Resighted" is defined as an IIP update of the iceberg position based on new sighting information.

2 The Julian date of the sighted/resighted position for this iceberg entry.
3 The calendar date of the sighted/resighted position for this iceberg entry (YY/MM/DD).
4 The time (UTC) for the sighted/resighted position for this iceberg entry.
5/6 The sighted or resighted position for this sighted/resighted iceberg entry (in degrees and minutes).
7 Reported size of the iceberg. Table 1 decodes the abbreviations.
8 Reported shape of the iceberg. Table 2 decodes the abbreviations.
9 Reported confidence of the sighting data. This represents the means used by the reporting source for identifying the iceberg and its characteristics. Table 3 decodes the abbreviations.
10 This column indicates the type of reporting source. Table 4 decodes the abbreviations.
11 The call sign of the reporting source.
12

Julian date of the last analysis (i.e. computer model forecast) position for this sighting before it is either deleted or resighted.

13 Calendar date of the last analysis position for this sighting.
14 The time (UTC) of the last analysis position for this sighting.
15/16 The last analysis position for this sighting before it was deleted or resighted (in degrees and minutes).

Table 1. Size   Table 2. Shape   Table 3. Confidence   Table 4. Source
Code Description Code Description Code Description Code Description
NUL nul NUL
nul NUL nul IBCNn Canada
GBL garbled GBL garbled GBL garbled IBUSn USA
GEN general N/A not applicable R/V radar and visual 1 aircraft
TAR unidentified target U/D undetermined R radar only 2 icebreaker
GR growler TAB tabular V visual only 3 other ship
BB bergy bit NTB non-tabular MEA measured 4 offshore industry
SM small DOM domed EST estimated 5 miscellaneous
MED medium PIN pinnacled SYN synthetic  
LG large DDK drydock  
VLG very large FRG fragment
RND randomized BLK blocky
  RND randomized

 

Section D: 1998 - 2009 Ice Patrol
 

Column(s) Description
1 The iceberg number for that sighting, re-sighting, or deletion.
2 The calendar date of that sighting, re-sighting, or deletion.
3 The Julian date of that sighting, re-sighting, or deletion.
4 The time of that sighting, re-sighting, or deletion.
5 The latitude (North) of the sighting, re-sighting, or deletion.
6 The longitude (negative sign means W) of the sighting, re- sighting, or deletion.
7 The confidence level or means of sighting of the iceberg (VIS=visible, RAD=radar, and R/V=both radar and visible).
8 The sighted size of the iceberg (code in Table 1).
9 The sighted shape of the iceberg (code in Table 2).
10 The mobility of the iceberg when sighted (DFT=drifting, GND=grounded, and TOW=under tow).
11 The sighting source by call sign (code in Table 3).
12* The calendar date of the last position of the iceberg before it was either deleted or re-sighted.
13* The Julian date of the last position of the iceberg before it was either deleted or re-sighted.
14* The time of the last position of the iceberg before it was either deleted or re-sighted.
15/16* The latitude and longitude of the last position of the iceberg before it was either deleted or re-sighted.
17* The percentage melt of the iceberg at the last position of the iceberg before it was either deleted or re-sighted.
18 The number of days drifted before it was it was either deleted or re-sighted.
19 For the years 1998-2004, the field 19 "size" refers to the estimated size of the last analysis (modeled) position for the iceberg entry. (B. Lis, personal communication, 1/2010)
20 Flag indicating if the iceberg was Deleted (DELETED), Active (ACTIVE), or Re-sighted (DELHIST).

* Note that for the years 1998-present, fields 12-17 (date, Julian date, time, latitude, longitude, and percent melt) refer to the last analysis (modeled) position of the iceberg entry, not merely the last position. However, the IIP has determined that for the years 2006-present, the data in fields 12-17 (analysis date, time, position and melt) are not reliable. There is a problem with the way the data are being captured for this report. Since this is an "iceberg sighting" database, the IIP plans to report the relevant fields 1-11 and 18(status). (B. Lis, personal communication, 1/2010)

Example of the 1998 format:

  1 02/05/1998 (036) 1200   49.79  -51.61 VIS    LG     DD     DFT   BAPS
  02/14/1998 (045) 1200   48.88  -50.53     11.2   9  LG      DELETED  
Table 1. Size   Table 2. Shape   Table 3. Source
Code Description Code Description Code Description
NUL nul NUL
nul IBCNn Canada
GBL garbled GBL garbled IBUSn USA
GEN general N/A not applicable 1 aircraft
TAR unidentified target U/D undetermined 2 icebreaker
GR growler TAB tabular 3 other ship
BB bergy bit NTB non-tabular 4 offshore industry
SM small DOM domed 5 miscellaneous
MED medium PIN pinnacled  
LG large DDK drydock
VLG very large FRG fragment
RND randomized BLK blocky
  RND randomized

 

Section E: 2010 and 2011 data files

The 2010 and 2011 data files contain the first 12 columns described in XX table (need to renumber all tables)

File Naming Convention
 

File Description
iip_60_82.rpt IIP iceberg data for 1960 to 1982 in IIP native format.
iip_83_91.rpt IIP iceberg data for 1983 to 1991 in IIP native format.
iip_92.rpt IIP iceberg data for 1992. in IIP native format
iip_93_97.rpt IIP iceberg data for 1993 to 1997 in IIP native format.
iip_98_2001.rpt IIP iceberg data for 1998 to 2001 in IIP native format.
iip_2002.rpt IIP iceberg data for 2002 in IIP native format.

iip_2003.rpt

IIP iceberg data for 2003 in IIP native format.
and so on through the present.

read_60_82.template
read_83_91.template
read_92.template
read_93_on.template
Short example FORTRAN routines to read the data file and place the results into an output structure. Note that these programs were developed for the SGI with IRIX 4.0.1 and should be considered as guides only and may require modification for different operating systems.

File Description
wdc_60_70.rpt IIP iceberg data for 1960 to 1970 in NSIDC format.
wdc_71_80.rpt IIP iceberg data for 1971 to 1980 in NSIDC format.
wdc_81_90.rpt IIP iceberg data for 1981 to 1990 in NSIDC format.
wdc_91_2000.rpt IIP iceberg data for 1991 to 2000 in NSIDC format.
wdc_xxxx.rpt IIP iceberg data for 2001 to present, where xxxx is the 4-digit year.

Sample Data Record

The first six lines of ipp_2004.rpt:

      1 02/12/2004 (043) 1900      60.00  -55.00 R/V     GR      GEN     GND      TEST   04/01/2004 (092) 1200      60.00  -55.00      .0    48 GR      DELETED

      2 02/19/2004 (050) 1800      51.95  -52.30 R/V     SM      DOM     DFT      JNIC   03/23/2004 (083) 1200      49.52  -51.35    96.3    32 GR      DELETED

      3 03/02/2004 (062) 0000      51.95  -51.10 RAD     RAD     RAD     DFT      BAPS   03/23/2004 (083) 1200      48.67  -48.59   200.8    21 GR      DELETED

      4 03/03/2004 (063) 1800      51.99  -51.63 RAD     RAD     RAD     DFT      BAPS   04/08/2004 (099) 1200      48.63  -48.78    91.0    35 GR      DELETED

      5 03/05/2004 (065) 1300      50.52  -55.28 R/V     MED     NTB     DFT      CGHL   03/20/2004 (080) 1200      49.62  -54.77     6.7    14 MED     DELHIST

      5 03/20/2004 (080) 1500      49.72  -54.82 VIS     BB      GEN     DFT      CGHL   03/31/2004 (091) 0000      49.60  -54.32    26.6    10 GR      DELHIST


The first six lines of wdc_2004.rpt:
    1 043 02/        1900  60.000 -55.000 R/V GR  GEN       120  60. 04/01/2004 -55.   0.000   0.000
    2 050 02/        1800  51.950 -52.300 R/V SM  DOM       120  49. 03/23/2004 -51.   0.000   0.000
    3 062 03/        0000  51.950 -51.100 RAD RAD RAD       120  48. 03/23/2004 -48.   0.000   0.000
    4 063 03/        1800  51.990 -51.630 RAD RAD RAD       120  48. 04/08/2004 -48.   0.000   0.000
    5 065 03/        1300  50.520 -55.280 R/V MED NTB       120  49. 03/20/2004 -54.   0.000   0.000
    5 080 03/        1500  49.720 -54.820 VIS BB  GEN       000  49. 03/31/2004 -54.   0.000   0.000
            

4. Data Access and Related Collections

Data Access

Data are available via FTP.

Related NSIDC Data Collection

International Ice Patrol Iceberg Drift Tracks

5. References and Related Publications

Refer to the International Ice Patrol Scientific Bibliography Web page.

6. Acknowledgements

We thank the IIP for providing yearly updates. Maintenance and distribution of the data set from NSIDC is supported by funding from NOAA's National Environmental Satellite, Data, and Information Service (NESDIS) and the National Geophysical Data Center (NGDC).

7. Document Information

Document Authors

Documentation is based on material provided prior to 1996 by IIP, Groton, CT. The original author is unknown.

Document Creation Date

In October, 2001, R. Welch published the online documentation.

Document Revision Date

October 2012: F. Fetterer and A. Windnagel made edits and added a question and answer section in response to a user inquiry using information provided by Barbara Lis (IIP) in 2011 and added information about the 2010 and 2011 data files.
December 2011: A. Windnagel changed the investigator contact.
November 2011: A. Windnagel made some minor formatting and text updates.
July 2006:This document was reformatted and information from earlier "read me" files (iip_fmt.txt and wdc_fmt.txt) was incorporated. The "read me" files were then removed from the FTP site. F. Fetterer oversaw these changes. In December, 2006, minor edits were made.

Document URL

http://nsidc.org/data/docs/noaa/g00807_international_iceberg_sightings/index.html