Editing Iceberg (section)

===Modern monitoring===

Iceberg concentrations and size distributions are monitored worldwide by the U.S. [[National Ice Center]] (NIC), established in 1995, which produces analyses and forecasts of [[Arctic]], [[Antarctic Circle|Antarctic]], [[Great Lakes]] and [[Chesapeake Bay]] ice conditions. More than 95% of the data used in its sea ice analyses are derived from the remote sensors on polar-orbiting satellites that survey these remote regions of the Earth.
[[Image:Iceberg A22A, South Atlantic Ocean.jpg|thumb|Iceberg A22A in the South [[Atlantic Ocean]]]]
The NIC is the only organization that names and tracks all Antarctic Icebergs. It assigns each iceberg larger than {{convert|10|nmi|km}} along at least one axis a name composed of a letter indicating its point of origin and a running number. The letters used are as follows:<ref>{{cite web|url=http://www.xs4all.nl/~carlkop/ronne.html|publisher=NOAA|date=15 October 1998|title=New Iceberg Breaks off Ronne Ice Shelf in Antarctica|access-date=2011-03-09}}</ref>
:'''A''' &ndash; [[longitude]] 0° to 90°&nbsp;W ([[Bellingshausen Sea]], [[Weddell Sea]])
:'''B''' &ndash; longitude 90°&nbsp;W to 180° ([[Amundsen Sea]], Eastern [[Ross Sea]])
:'''C''' &ndash; longitude 90°&nbsp;E to 180° (Western Ross Sea, [[Wilkes Land]])
:'''D''' &ndash; longitude 0° to 90°&nbsp;E ([[Amery Ice Shelf]], Eastern Weddell Sea)

{{maplink|frame=yes|frame-align=center|frame-width=550|from=Antarctic Iceberg.map|frame-latitude=-70|frame-longitude=0|zoom=1|text=Map of icebergs in the Antarctic as of 23 January 2025 (20 sqNM or greater, or 10 NM on its longest axis) ([[:c:Data:Antarctic Iceberg.map|map data]])
{{legend|red|A}}
{{legend|blue|B}}
{{legend|green|C}}
{{legend|yellow|D}}
}}

The [[Danish Meteorological Institute]] monitors iceberg populations around Greenland using data collected by the [[Synthetic-aperture radar|synthetic aperture radar]] (SAR) on the [[Sentinel-1A|Sentinel-1 satellites]].<ref>{{cite web |title=Icebergs: Polar Portal |url=http://polarportal.dk/en/sea-ice-and-icebergs/icebergs/ |website=polarportal.dk |access-date=28 January 2025 |language=en}}</ref>