Defense Weather Satellite System

{{Redirect|DWSS|other uses|DWSS (disambiguation)}}

The Defense Weather Satellite System (DWSS){{cite web |title=Defense Weather Systems Directorate Defense Weather Systems Directorate: DWSS Factsheet |url=https://www.losangeles.spaceforce.mil/?id=4644 |access-date=15 July 2011 |url-status=live |archive-url=https://web.archive.org/web/20110625094624/http://www.losangeles.af.mil/library/factsheets/factsheet.asp?id=4644 |archive-date=25 June 2011 }} was a United States Department of Defense weather satellite system to have been built by Northrop Grumman Corporation{{cite web|title=Northrop Grumman DWSS Home Page |url=http://www.as.northropgrumman.com/products/dwss/index.html |access-date=15 July 2011 |url-status=dead |archive-url=https://web.archive.org/web/20111007202825/http://www.as.northropgrumman.com/products/dwss/index.html |archive-date=7 October 2011 }} projected for launch in 2018.{{Cite web |url=http://www.defense-aerospace.com/cgi-bin/client/modele.pl?shop=dae&modele=release&prod=125787&cat=3 |title=Northrop Grumman Receives Authorization from U.S. Air Force to Begin Work on Defense Weather Satellite System |access-date=2011-05-27 |archive-date=2012-03-15 |archive-url=https://web.archive.org/web/20120315175013/http://www.defense-aerospace.com/cgi-bin/client/modele.pl?shop=dae&modele=release&prod=125787&cat=3 |url-status=dead }}

In January 2012, the US Air Force cancelled the program.{{cite news|url=http://www.spaceflightnow.com/news/n1201/24dwss/|title=Proposed next-generation weather satellites get the ax|date=January 24, 2012|publisher=Spaceflight Now}} It was replaced with the Weather System Follow-on Microwave (WSF-M).{{cite web|title=2015 Air Force RDT&E Budget Item Justification|url=https://www.globalsecurity.org/military/library/budget/fy2015/usaf-peds/0604422f_4_pb_2015.pdf|access-date=12 December 2017}}

DWSS was a follow-on for the Defense Meteorological Satellite Program (DMSP) mission. The DWSS, together with the still continuing Joint Polar Satellite System (JPSS) project, was to replace the National Polar-orbiting Operational Environmental Satellite System (NPOESS) project which itself was cancelled in January 2010.[https://www.reuters.com/article/us-satellite-northrop-idUSTRE74N85N20110524 Reuters: Northrop in $427 million U.S. Air Force satellite deal]