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11 Dec 2015 description
map UNOSAT

Analysis with Pleiades Data Acquired 14 August 2015

24 Sep 2009 description

This map illustrates satellite-detected changes in the flood water levels in northern Senegal and southern Mauritania, as based on change detection methods using multiple MODIS Aqua & Terra data acquired over the period of 29 August - 21 September 2009.

21 Sep 2009 description

This urban focus map illustrates satellite-detected areas of probable flood waters and flood-affected areas within the city of Rosso, Mauritania as based on change detection methods using Formosat-2 data acquired 16 September, and pre-crisis Spot-5 imagery acquired 10 November 2008.The primary locations of flood waters affecting the city are located in the northern and eastern edge of the urban zone.

11 Sep 2009 description

This map illustrates satellite-detected areas of probable flood waters and flood-affected areas within the city of Rosso, Mauritania as based on change detection methods using Radarsat-2 and ENVISAT ASAR data acquired 10 September, and pre-crisis Spot-5 imagery acquired 10 November 2008. Pre-crisis Radasat-1 from 6 September 1999 and was also used. The primary locations of flood waters affecting the city are located in the northern and eastern edge of the urban zone.

11 Sep 2009 description

This urban focus map illustrates satellite-detected areas of probable flood waters and flood-affected areas within the city of Rosso, Mauritania as based on change detection methods using Radarsat-2 and ENVISAT ASAR data acquired 10 September, and pre-crisis Spot-5 imagery acquired 10 November 2008. Pre-crisis Radasat-1 from 6 September 1999 and was also used. The primary locations of flood waters affecting the city are located in the northern and eastern edge of the urban zone.

20 Sep 2007 description

This map illustrates the estimated population density within 5km of satellite detected flood water in Mauritania and Senegal. Total population figures have also been estimated by province and district admin. units (levels 1 & 2). Flood water analysis was made using MODIS Terra data recorded from 12-15 September 2007. Additional pre-flood MODIS terra data from May 2007 (depicted in blue) was used in this analysis. This flood detection is a preliminary analysis & has not yet been validated in the field.

20 Sep 2007 description

This map illustrates the estimated population density within 5km of satellite detected flood water in Mali & Eastern Mauritania. Total population figures have also been estimated by province and district admin. units (levels 1 & 2). Flood water analysis was made using MODIS Terra data recorded from 12-15 September 2007. Additional pre-flood MODIS terra data from May 2007 (depicted in blue) was used in this analysis. This flood detection is a preliminary analysis & has not yet been validated in the field.

16 Sep 2007 description

This map illustrates satellite detected flood water over the flood affected areas in Mali & Eastern Mauritania (depicted in red). Flood water analysis was made using MODIS Terra data recorded from 12-15 September 2007. Additional pre-flood MODIS terra data from May 2007 (depicted in blue) was used in this analysis. This flood detection is a preliminary analysis & has not yet been validated in the field. UNOSAT is collaborating with WFP and ITHACA in support to the humanitarian operation in West Africa.

16 Sep 2007 description

This map illustrates satellite detected flood water over the flood affected areas in northern Senegal and southern Mauritania (depicted in red). Flood water analysis was made using MODIS TERRA data recorded from 12-15 September 2007. Additional pre-flood MODIS TERRA data from May 2007 (depicted in blue) was used in this analysis. This flood detection is a preliminary analysis & has not yet been validated in the field. UNOSAT is collaborating with WFP and ITHACA in support to the humanitarian operation in West Africa.

16 Sep 2007 description

This map illustrates the total August rainfall accumulation for West Africa, derived from the CMORPH precipitation dataset at a spatial resolution of approximately 10km for this region, and was calculated using microwave and infrared data from geostationary satellites. It is possible that precipitation levels may have been underestimated for local areas, and is not a substitute for ground station measurements.