VIIRS - Sea Ice Concentration, Ice Thickness, Ice Surface Temperature

jebidiah.jeffery — Thu, 17 Mar 2022 14:32:41 +0000

VIIRS Sea Ice Concentration, Sea Ice Thickness and Ice Surface Temperature NOAA CoastWatch/OceanWatch/PolarWatch Level 3, Daily and daily 4-day rolling merged, mapped composites in both polar stereographic projections and CW sector mapped for Northern and Southern hemispheres.

jebidiah.jeffery Thu, 03/17/2022 - 10:32

VIIRS Sea Ice Concentration, Sea Ice Thickness and Ice Surface Temperature, NOAA CoastWatch/OceanWatch/PolarWatch Level 3, Daily and daily 4-day rolling merge, mapped composites are nominally at native spatial resolution (~750 m), clear sky only.

North Polar (NP06) and South Polar (SP06) are Polar Stereographic projected daily composites
Six Northern hemisphere and six Southern hemisphere high latitude CoastWatch VIIRS sectors (see sector map below)
- North Sectors: UZ, VZ, WZ, XZ, YZ, ZZ
- South Sectors: UW, VW, WU, XW, YW, ZW

Map of CoastWatch regional sectors

Data Provider: JPSS Center for Satellite Applications and Research Cryosphere Team

STAR Cryosphere Environmental Data Record Team Lead: Jeff Key

Sea ice age is defined as the time that has passed since the formation of the surface layer of an ice covered region of the ocean.

Sea ice concentration is the fraction of a horizontal cell covered by ice.

NDE Enterprise Ice Age/Thickness Algorithm

One-dimensional Thermodynamic Ice Model (OTIM):

Based on the surface energy budget at thermo-equilibrium state
Independent of historical records for ice thickness and age estimation
Capable of retrieving daytime and nighttime sea and lake ice thickness under both clear and cloudy sky conditions

IDPS Sea Ice Concentration is an intermediate product (IP)

Algorithm computes ice fractions based on ice and water tie points determined from VIIRS I1 (0.64 µm) and I2 (0.865 µm) reflectance and surface temperature from the VIIRS Surface Temperature IP

Enterprise Sea Ice Concentration Algorithm

Use threshold tests to detect possible ice cover: Daytime and Nighttime
Use a tie-point algorithm to derive reflectance (temperature) for pure ice pixel, and then calculate ice concentration

https://stratus.ssec.wisc.edu/cgi-bin/amsr2snow_prod?seaice

Temporal Coverage

Daily and
Daily 4-day rolling merge

Product Families

Polar Sea Ice

Wang, Xuanji and Key, Jeffrey R., NOAA/NESDIS Center for Satellite Applications and Research, Algorithm Theoretical Basis Document: ABI and VIIRS Ice Thickness and Age, Version 1.0, 17 December 2015.

Ice Age ATBD (NDE), (PDF, 2.6 MB)

Liu, Yinghui and Key, Jeffrey R.,, NOAA/NESDIS Center for Satellite Applications and Research, Algorithm Theoretical Basis Document: Ice Surface Temperature, Ice Concentration, and Ice Cover, Version 1.0, 17 December 2015.

Ice Cover ATBD (NDE), (PDF, 1.69 MB)

EDR Long Term-Monitoring

Data Viewer at STAR: VIIRS Sea Ice; AMSR-2/ GCOM-W1 Sea Ice
University of Wisconsin Cryo Team CIMSS website

Measurements

Sea Ice Concentration

Sea Ice Temperature

Sea Ice Thickness

Visible And Near IR Radiometry

Processing Levels

Level 3

Spatial Coverage

CoastWatch Global Sectors

Polar (Artic/Antarctic)

Latency Groups

0 Hours <= 24 Hours (NRT)

Latency Details

about 12 to 24 h

Spatial Resolution Groups

100m < 2km

Spatial Resolution Details

Nominal 750 m

Platforms

NOAA

SNPP

Instruments

VIIRS

Data Providers

NOAA

NESDIS

OSPO

STAR

CoastWatch

Cryosphere Team

Data Tool Links

CoastWatch Near Real-Time Search Tool

S-NPP & NOAA-20:

Sample Filenames

VXSCCW_B2019203_C244_011341-233757_NP06_edgemask_IceConc.nc
VXSCCW_B2019203_C103_011341-232508_UZ00_edgemask_IceConc.nc
VXSACW_B2019203_C246_002354-224644_SP06_edgemask_IceThickness.nc
VXSCCW_B2019203_C102_003351-224644_VW00_edgemask_IceSrfTemp.nc
VXSCCW is
B2019201 is Year and day of year as BYYYYdoy
C### is number of granules in composite
Series of 6-digit numbers are the range of granule start times included in composite
UZ00, for example, is sector indicator (see Description tab for sector map) for equatorial projection
NP06 or SP06 is indicator for polar stereographic projection from the 6 sectors regions (North or South)
edgemask
Product DescriptionIceConc = Ice Concentration
IceThickness = Ice Thickness
IceSrfTemp = Ice Surface Temperature

North Polar (NP06) and South Polar (SP06) are Polar Stereographic projected daily composites from the 6 CoastWatch VIIRS sectors

UZ, VZ, WZ, XZ, YZ, ZZ Northern high latitude CoastWatch VIIRS sectors (see sector map below)

UW, VW, WU, XW, YW, ZW Southern high latitude CoastWatch VIIRS sectors (see sector map below)

THREDDS

Aggregated and Per-File View

Ice Thickness:

S-NPP:
- Daily merge: https://www.star.nesdis.noaa.gov/thredds/socd/coastwatch/catalog_viirs_npp_ice_thick_daily.html
- Daily 4-day rolling merge: https://coastwatch.noaa.gov/thredds/socd/coastwatch/catalog_viirs_npp_ice_thick_4day.html
NOAA-20:
- Daily merge: https://coastwatch.noaa.gov/thredds/socd/coastwatch/catalog_viirs_n20_ice_thick_daily.html
- Daily 4-day rolling merge: https://coastwatch.noaa.gov/thredds/socd/coastwatch/catalog_viirs_n20_ice_thick_4day.html

Ice Surface Temperature:

S-NPP:
- Daily merge: https://www.star.nesdis.noaa.gov/thredds/socd/coastwatch/catalog_viirs_npp_ice_temp_daily.html
- Daily 4-day rolling merge: https://coastwatch.noaa.gov/thredds/socd/coastwatch/catalog_viirs_npp_ice_temp_4day.html
NOAA-20:
- Daily merge: https://coastwatch.noaa.gov/thredds/socd/coastwatch/catalog_viirs_n20_ice_temp_daily.html
- Daily 4-day rolling merge: https://coastwatch.noaa.gov/thredds/socd/coastwatch/catalog_viirs_n20_ice_temp_4day.html

Ice Concentration:

S-NPP:
- Daily merge: https://www.star.nesdis.noaa.gov/thredds/socd/coastwatch/catalog_viirs_npp_ice_conc_daily.html
- Daily 4-day rolling merge: https://coastwatch.noaa.gov/thredds/socd/coastwatch/catalog_viirs_npp_ice_conc_4day.html
NOAA-20:
- Daily merge: https://coastwatch.noaa.gov/thredds/socd/coastwatch/catalog_viirs_n20_ice_conc_daily.html
- Daily 4-day rolling merge: https://coastwatch.noaa.gov/thredds/socd/coastwatch/catalog_viirs_n20_ice_conc_4day.html

Top Level Sea Ice Catalog

https://www.star.nesdis.noaa.gov/thredds/socd/coastwatch/catalog_coastwatch_ice.html

ERDDAP

S-NPP:

https://coastwatch.noaa.gov/erddap/search/index.html?page=1&itemsPerPage=1000&searchFor=nppice

NOAA-20:

** Not yet available **

AMSR2 - Sea Ice Concentration

jebidiah.jeffery — Thu, 17 Mar 2022 14:32:01 +0000

AMSR2 - Sea Ice Concentration

NOAA CoastWatch / OceanWatch / PolarWatch Sea Ice Concentration, Level 3, daily and daily 4-day rolling merge, polar stereographic mapped composites - AMSR-2

jebidiah.jeffery Thu, 03/17/2022 - 10:32

The second Advanced Microwave Scanning Radiometer 2 (AMSR-2) on JAXA's Global Climate Observation Mission - Water 1 (GCOM-W1)
Daily composites and daily 4-day rolling merge composites
10 km spatial resolution
Polar Stereographic projections for North Pole and South Pole
Microwave not impacted by clouds
Source data from NOAA OSPO; NOGAPS algorithm developed by NOAA STAR (Paul Chang, Lead)

Temporal Coverage

Daily and
Daily 4-day rolling merge

Product Families

Polar Sea Ice

STAR Development (Paul Chang, Lead)

https://manati.star.nesdis.noaa.gov/gcom

OSPO Monitoring and Documentation

https://www.ospo.noaa.gov/Products/atmosphere/gpds/algo.html

Measurements

Sea Ice Concentration

Processing Levels

Level 3

Spatial Coverage

Polar (Artic/Antarctic)

Latency Groups

0 Hours <= 24 Hours (NRT)

Latency Details

Approximately 12 to 24 hours

Spatial Resolution Groups

2km+

Spatial Resolution Details

10 km

Platforms

GCOM-W

Instruments

AMSR2

Data Providers

JAXA

NASA

NOAA

NESDIS

OSPO

Data Tool Links

CoastWatch Near Real-Time Search

Sample Filenames

GWXCW_W2019203_C15_002140_020039_033940_051540_065439_083040_100940_114840_132440_150341_164242_182143_200342_214543_224240_NP06_IceConc.nc

Where:
GWXCW is
W2019203 is W year and day of year: WYYYYdoy
C15 indicates number of granules in composite (generally 14 or 15)
Series of 6 digit numbers are start times each granule included in the composite
NP06 (or SP06) indicates mapped to Polar Stereographic Projection for North Pole (NP06) or South Pole (SP06)
Ice Conc is product name = Ice Concentration
.nc is NetCDF format (CF compliant)

THREDDS

Aggregated and Per-file Views:

https://www.star.nesdis.noaa.gov/thredds/socd/coastwatch/catalog_amsr2_gw1_ice_conc_daily.html

Top Level Sea Ice Catalog:

https://www.star.nesdis.noaa.gov/thredds/socd/coastwatch/catalog_coastwatch_ice.html

ERDDAP

https://coastwatch.noaa.gov/erddap/search/index.html?page=1&itemsPerPage=1000&searchFor=Ice+AMSR2

CoastWatch Data Quality & Availability Dashboard

jebidiah.jeffery — Thu, 04 Nov 2021 13:39:01 +0000

CoastWatch Data Quality & Availability Dashboard

This Data Availability Dashboard gives a concise report of product availability and a quick look at a bulk time series to monitor for product stability

jebidiah.jeffery Thu, 11/04/2021 - 09:39

Webpage

Link to CoastWatch Data & Data Availability Dashboard

Monitor Type

Data Assurance

Quality Assurance

Product Types Monitored

Ocean Color

Polar Sea Ice

Sea Surface Height

Sea Surface Salinity

Sea Surface Winds

Sea Surface Temperature

Maintainer

CoastWatch Team