Bremen amsr 2. The results show that the daily mean AMSR-E ASI products underestimate SICs about 17. There are three types of products, Level-1, Level-2, and Level-3, depending on the processing level, and there are standard products and research products, respectively. , 2023) which is applied to microwave radiometer data of the sensors AMSR-E (Advanced Mi- crowave Scanning These sea ice concentration data are retrieved with the ARTIST Sea Ice (ASI) algorithm (Spreen et al. g. One retrieval over open ocean [10] using AMSR-E (Advanced Microwave Scanning Radiometer for EOS) on Sea Ice Concentration data from AMSR-E, AMSR2 & SSMIS, U Bremen and U Hamburg ASI algorithm Years of record 2002-06 to 2011-10 The sea ice data derived from AMSR-E using the ARTIST sea ice (ASI) algorithm offer a factor of 4 finer spatial resolution than most sea ice data sets from passive microwave satellite instruments. 0 product (Rostosky et al, 2018) is calculated on multi-year ice but only for the months of March and April (during the Operation Ice Bridge campaigns). de provides sea ice data of the Arctic and Antarctic. Using the highest frequency (85 GHz) channels (v and h pol) and the ASI (Artist Sea Ice) concentration algorithm, allows to present the highest resolving ice This folder contains sea ice concentration and snow depth data derived from the satellite microwave radiometer AMSR2. uni-bremen. de/sea-ice-concentration-amsr-eamsr2 you can find near-real-time daily sea ice concentration maps derived from AMSR2 data using the ASI algorithm. Data from the satellite radiometer AMSR-E is available for the period from 19 June 2002 to 30 September 2011; it ceased operating on 4 October 2011. These data are retrieved with two algorithms, using microwave radiome-ter data from diferent sensor types. The products are available in the sub-directories, e. We would like to show you a description here but the site won’t allow us. The fit parameters are not deduced by comparing it during an overlap period to another time series. これからの時期ピッタリ！ . de/data/, last access: 11 February 2023) is based on the ASI algorithm [39]. Near real-time ocean and radiance data from the Advanced Microwave Scanning Radiometer 2 (AMSR2) instrument is available through NASA's Land, Atmosphere Near real-time Capability for Earth observation (LANCE). de. See here for further information. 是非BAR BREMENで1杯いかがでしょう😊 . spreen@uni-bremen. In addition, the data contain the geolocation in-formation for each footprint. Feb 21, 2022 · In this study, we developed a new snow depth retrieval method over Arctic sea ice with a long short-term memory (LSTM) deep learning algorithm based on Operation IceBridge (OIB) snow depth data and brightness temperature data of AMSR-2 passive microwave radiometers. Information about the projection (EPSG and Proj. This is achieved by comparing brightness temperatures at different frequencies, which vary for ice and snow. U Bremen also offers daily sea ice estimates based on the 91 GHz channel of the SSMIS. Data source: University of Bremen An area of no data (shown as a dark grey colour) may be apparent along coastlines. Examples Sea Ice Concentration data from AMSR-E, AMSR2 & SSMIS, U Bremen and U Hamburg ASI algorithm Years of record 2002-06 to 2011-10 The sea ice data derived from AMSR-E using the ARTIST sea ice (ASI) algorithm offer a factor of 4 finer spatial resolution than most sea ice data sets from passive microwave satellite instruments. Source of the satellite images: http We would like to show you a description here but the site won’t allow us. , "amsr2" for the AMSR2 sea ice concentration data. Focusing on the waterways south of Victoria Island (Nunavut, Canada), we show that predicting fr 23-, and 37-GHz AMSR-E data using weather filters. BIG jumps at Bremen & Norsex, however the Arctic Central Basin, after losing 250,000 has remelted 71,000, dragging Cryo Area down. BAR BREMENでしか飲めない1杯です😊 . de] ' Conventions CF-1. 日に日に冷え込んできましたね🥶 . 125km spatial resolution (full Antarctic coverage). Today, it really looks on bad shape… Bremen AMSR-2 180730. 10 Scanning Radiometer 2 (AMSR-2) passive radiometer data, and the Dual-altimeter Snow Thickness (DuST) Ka-Ku product (only in Arctic). 5 km (optionally 25km) spatial resolution for 2002-2011. 25 km, is regularly published by the University of Bremen, Institute of Environmental Physics (IUP) from the AMSR-E and AMSR2 sensors (Spreen, Kaleschke, & Heygster, 2008). The AMSR-E data collection comes from the AMSR-E sensor that flew onboard NASA’s Aqua satellite, observing interactions between snow and ice, and Earth's atmosphere and ocean. [52] merged the W99 climatology snow depth and the AMSR-2 snow depth of the University of Bremen to obtain a composite snow depth product (hereafter referred to as AWI). 2. Feb 28, 2025 · 2. Blue outlined yellow areas on the map below indicate the spatial coverage for this data set. 3. Sea Ice Concentration data from AMSR-E, AMSR2 & SSMIS, U Bremen and U Hamburg ASI algorithm Years of record 2002-06 to 2011-10 The sea ice data derived from AMSR-E using the ARTIST sea ice (ASI) algorithm offer a factor of 4 finer spatial resolution than most sea ice data sets from passive microwave satellite instruments. 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 Nov 2, 2024 · Index of /amsr2/asi_daygrid_swath/s3125/2024/nov/NeumayerEast Feb 14, 2019 · The sea ice concentration product from the University of Bremen, Institute of Environmental Physics (IUP), is being retrieved with the ARTIST Sea Ice (ASI) algorithm, applied to microwave radiometer data of the sensor AMSR2 (Advanced Microwave Scanning Radiometer 2) on the JAXA satellite GCOM-W1. 4) is contained in the global attributes. The data from years 2002-2018 are also available at the data publisher PANGAEA, one data set each for Arctic and Antarctic, AMSR-E-based and AMSR2-based: Melsheimer, Christian, Spreen, Gunnar (2020): AMSR-E ASI sea ice concentration data, Arctic, version 5. Abstract— Recent progress in spatial resolution enhancement of sea ice concentrations obtained by microwave remote sensing has been stimulated by two new developments: First, the new sensors AMSR (Advanced Microwave Scanning Radiometer) on MIDORI-II and AMSR-E on AQUA offer horizontal resolutions of 6x4 km at 89 GHz. de and https://seaice. NT2, an extension of the original NASA Team algorithm, uses AMSR-E 89GHz channels to help resolve ambiguity between low ice concentrations and areas with strong surface effects (due to snow layering and glazing Data source: University of Bremen An area of no data (shown as a dark grey colour) may be apparent along coastlines. 5 / GMT_version 6. JAXA calls the data provided to the public as products. Jan 17, 2008 · [1] Recent progress in sea ice concentration remote sensing by satellite microwave radiometers has been stimulated by two developments: First, the new sensor Advanced Microwave Scanning Radiometer-EOS (AMSR-E) offers spatial resolutions of approximately 6 × 4 km at 89 GHz, nearly 3 times the resolution of the standard sensor SSM/I at 85 GHz (15 × 13 km). One retrieval over open ocean [10] using AMSR-E (Advanced Microwave Scanning Radiometer for Jun 18, 2019 · The product is based on an empirical algorithm using passive microwave satellite observations from the AMSR-2 (Advanced Microwave Scanning Radiometer 2) sensors on the JAXA satellite GCOM-W1, gridded on a polar stereographic grid (EPSG code 3411, Arctic) with 25 km grid resolution. 3. Snow depth is derived from passive microwave satellite observations from the AMSR-E/2 sensor for the period from 2002 to now. 25 km grid Abstract In East Antarctica, around 136°E 66°S, spurious appearance of polynya (open water area within an ice pack) is observed on ice concentration maps derived from the ASI (ARTIST Sea Ice) algorithm during the period of February to April 2014, using satellite data from the Advanced Microwave Scanning Radiometer 2 (AMSR-2). Now 1. 17 kB, 614x523 - viewed 4098 times. Daily 6. 0 [64-bit] ! history Tue Jan 14 07:04:44 2025: GDAL CreateCopy( /mnt/web//data/amsr2/asi_daygrid_swath/n6250/netcdf/2025/asi-AMSR2-n6250-20250113-v5. . The Bremen AMSR-2 v1. やっぱりそんな時は生姜🫚で暖まりましょ😊 . The Advanced Microwave Scanning Radiometer 2 (AMSR2) instrument launched aboard the Japanese Space Exploration Agency Global Change Observation Mission 1st-Water, "SHIZUKU" (GCOM-W1) satellite. November 12, 2014 AMSR-2 sea ice concentration is from University of Bremen. Jan 17, 2025 · Bremen AMSR-2 (AMSR) The Advanced Microwave Scanning Radiometer 2 (AMSR-2) is part of the SHIZUKU satellite from the Japan Aerospace Exploration Agency, which was launched in May 2012. Is this a Leading Indicator ? What will the Hurricanes do ?? Commented Sep 23, 2010 on Sea For FTP access, connect to "data. But on http://www. In addition to graphic representations of the underlying verified data and derived data products it is also possible to download the information for further processing. seaice. The geolocation information is then corrected following the AMSR-2 Brightness Temperature from the Japan Aerospace Exploration Agency provided by the University of Bremen, accessed May 2017, available at seaice. University of Bremen (IUP) UB calculates daily in near real time wordwide sea ice concentrations, based on data of the passive microwave imager ASMR2 (Advanced Scanning Microwave Radiometer on EOS) on the NASA spacecraft Aqua. Antarctic sea-ice extent and concentration in the middle of February (summer) and September (winter) 2006 as obtained by remote sensing (Spreen et al. Several studies have shown that snow depth on sea ice can be estimated from AMSR-E (the predecessor of AMSR-2) and AMSR-2, with limitations depending on the season or type of sea ice. During two ship campaigns, the correlation of ASI, NASA-Team 2 and Bootstrap algorithms ice concentrations with bridge o Satellites this instrument is flying on Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites Global Change Observation Mission (JAXA) GCOM-W (see instrument status) Aug 2012 - 2025 Instrument classification Earth observation instrument Passive microwave radiometer Conical scanning microwave radiometer AMSR-E/AMSR2 Unified Level-3 25 km 产品提供了利用 NASA Team 2 (NT2) 算法从北半球和南半球的亮度温度推导出的海冰浓度。该数据集包括 6. Sep 9, 2022 · The AMSR-E/NASA Team 2 (NT2) data set of Arctic and Antarctic sea ice concentration is available at daily timesteps and 12. 飲めば分かる！ . 125 km and 6. The sea ice concentration product from the University of Bremen, Institute of Environmental Physics (IUP), is being retrieved with the ARTIST Sea Ice (ASI) algorithm, applied to microwave radiometer data of the sensor AMSR2 (Advanced Microwave Scanning Radiometer 2) on the JAXA satellite GCOM-W1. The AMSR-E/AMSR-2 data can provide a variety of parameters of land, ocean and atmosphere. de". Data based on AMSR-E/AMSR2 and ASCAT, 2009-now: Each NetCDF file contains a two-dimensional array 'MYI' of the MYI concentration in a polar stereographic grid, and another array 'CR_FLAG' that shows which correction scheme was applied to which pixel. As such, numerous methods have been developed to estimate sea ice concentration. 1 Introduction This Document is intended for users of the composite AMSR-E/AMSU-B total water vapour (TWV) product from the University of Bremen, Institute of Environmental Physics (IUP). Second, a new algorithm enables We would like to show you a description here but the site won’t allow us. ASI is based on the difference of vertically and horizontally polarized Bremen AMSR-2 (AMSR). AMSR-E is a coneshaped scanning full energy passive microwave radiometer with 12 channels and 6 observation frequency bands, with horizontal and vertical polarization data in each frequency band. Its successor AMSR2 was successfully put into orbit on 18 May 2012 and has transmitted daily sea-ice Jul 14, 2022 · The basic characteristics are almost identical to those of a predecessor sensor, AMSR-E. The latest version of the These sea ice concentration data are retrieved with the ARTIST Sea Ice (ASI) algorithm (Spreen et al. We have longstanding experience in deriving sea ice area, type, thickness, and snow depth as well as atmospheric water vapor from passive microwave radiometers like AMSR-E/2, AMSU, SMAP, and SMOS. Jul 3, 2012 · Since July 3, 2012, AMSR2 data is displayed which is adapted with the same parameters as its predecessor AMSR-E. The data and image archive of meereisportal. ) This Document is intended for users of the ASI sea ice concentration product from the University of Bremen, Institute of Environmental Physics (IUP), available athttps:seaice. Abstract—The AMSR-E sea ice concentration product with the spatial resolution of 6. Your browser does not support the video tag. It is validated in the Arctic against in-situ and airborne validation data. 1. , 2016) to make a time series of ice production by the AMSR-E/2 from 2002 until today. Over first-year ice, snow depth is derived from November to April and over multiyear ice from March to April. Data 2. The most widely used sea ice data sets for climate research are derived from passive microwave instruments, including SMMR, SSMI, SSMIS, AMSR-E and AMSR-2, flying on various satellite platforms. Based on the ice-water discrimination Jul 3, 2020 · The sea ice concentration product from the University of Bremen, Institute of Environmental Physics (IUP), has been retrieved with the ARTIST Sea Ice (ASI) algorithm, applied to microwave radiometer data of the sensor AMSR-E (Advanced Microwave Scanning Radiometer for EOS) on the NASA satellite Aqua. 4 days ago · Interactive interface to easily browse the products of the Polar Remote Sensing Group of the University of Bremen. The map is produced daily for the region north of 60°N in near-real time (approximately 25 hours latency). Jan 13, 2025 · V Œ author p University of Bremen, Gunnar Spreen [gunnar. Antarctic sea ice coverage for the last 30 days. . 25 km AMSR-E/AMSR2 SIC from Bremen University (UB) is one of the widely used SIC products. 25km is the finest published dataset of passive microwave in present. The data are derived from observations acquired by the Advanced Microwave Scanning Radiometer (AMSR) for EOS (AMSR-E) and AMSR2 instruments that have been spatially resampled by the Japan Aerospace Mar 1, 2024 · The re-estimated AMSR-E/2 ice production is compared with the SSM/I-SSMIS ice production (Tamura et al. AMSR-E/AMSR2 Unified L3 Daily 12. In addition, gridded AMSR2 brightness temperatures are stored here as well: Sep 9, 2022 · Bootstrap sea ice refers to a well-known algorithm used to estimate sea ice concentration from passive microwave brightness temperatures. These data are retrieved via inversion of a forward model using optimal estimation (Rückert et al. Aug 18, 2022 · For more information and citation notices see seaice. AMSR data includes observed brightness temperatures and geophysical quantities estimated from the brightness temperatures. This land-mask is applied as part of the data processing to avoid erroneous ice concentration values along coasts. In this paper, MODIS data and aerial image are used to validate this product. This page discusses the algorithm itself and the long-term data set ("NSIDC 0079, version 2") produced by J. The data are gridded on a polar stereographic grid (EPSG code 3411, Arctic) with 6. ASI is based on the difference of vertically and horizontally polarized Sea ice concentration (SIC) is an important sea ice parameter of the atmosphere-ice-ocean system in the polar region. de], Christian Melsheimer [melsheim@uni-bremen. The service is part of the GMES project Polar View and of the Arctic Regional Ocean Observing System (Arctic ROOS) Arctic sea ice coverage for the last 30 days. The Advanced Microwave Scanning Radiometer 2 (AMSR-2) is part of the SHIZUKU satellite from the Japan Aerospace Exploration Agency, which was launched in May 2012. The daily AMSR2 (and AMSR-E) SIC product accessible at the University of Bremen (https://seaice. ASI is based on the difference of vertically and horizontally polarized The downloadable sea-ice concentration data, maps and analyses for the Arctic and Antarctic are based on the satellite radiometers listed below. The data is available on a daily basis gridded to polar stereographic grid with 25 x 25 km spatial resolution. It can be applied to data from many satellite instruments, such as SMMR, SSMI, and AMSR-E. , 2008) which is applied to microwave radiometer data of the sensors AMSR-E (Advanced Microwave Scanning Jul 1, 2024 · This study proposes a dual-branch encoder U-Net (DBU-Net) deep learning model to classify sea ice types based on synthetic aperture radar (SAR) images… The data from years 2002-2018 are also available at the data publisher PANGAEA, one data set each for Arctic and Antarctic, AMSR-E-based and AMSR2-based: Melsheimer, Christian, Spreen, Gunnar (2020): AMSR-E ASI sea ice concentration data, Arctic, version 5. The algorithms have been developed and tested using historical satellite passive microwave data and are We would like to show you a description here but the site won’t allow us. The level 1 brightness temperature data are provided by the Japan Aerospace Exploration Agency’s (JAXA) Advanced Microwave Scanning Radiometer 2 (AMSR2) [5]. nc, ) Figure 1: Today's trajectory in yellow. Feb 29, 2012 · This page presents the AMSR-E sea ice concentrations calculated daily in near real time. 4. These data are retrieved with two algorithms, using microwave radiometer data from di erent sensor types. jpg (221. Comiso and distributed by NSIDC. 0 GHz 频道的六个日亮度温度场、三个日海冰浓度场以及上升轨道、下降轨道和全轨道日平均值的三个日海冰浓度差值场。 As a continuation of NOAA’s GCOM-W project efforts to improve the accuracy of the retrieved geophysical parameters under all weather conditions, a revised version of AMSR-2 SSW has been developed. An interactive databrowser is available here. Jan 1, 2019 · AMSR-E/AMSR2北极海冰密集度（DT-ASI）数据简介基于AMSR-E/AMSR2轨道亮温数据反演的逐日北极海冰密集度（SeaIceConcentration，SIC）产品由中国海洋大学极地海洋过程与全球海洋变化重点实验室（POGOC）、教育部物理海洋重点实验室（POL）开发研制。 This Document is intended for users of the multi-parameter retrieval product from the University of Bremen, Institute of Environmental Physics (IUP), available athttps:seaice. This page presents the AMSR2 (and AMSR-E) sea ice concentrations calculated daily in near real time. 5 pixels or ~ 25,000 Short of 2008. Unfortunately, as Anthony Watts pointed out, though it went down a tick, NSIDC revised the previous day by more than today's Drop . 1 AMSR-E AMSR-E Level 1A data, version 3, are used (see section 2 above). Hendricks et al. Sep 9, 2022 · The AMSR-2 was launched in early 2012, and data are available as of 2013. The data from years 2002-2018 are also available at the data publisher PANGAEA, one data set each for Arctic and Antarctic, AMSR-E-based and AMSR2-based: Melsheimer, Christian, Spreen, Gunnar (2020): AMSR-E ASI sea ice concentration data, Arctic, version 5. 4 (NetCDF) (June 2002 - September 2011). For details on each product, please refer to May 28, 2025 · This case study explores how new AI-driven sea ice forecasts can support Arctic wildlife conservation. Time series has been expanded to be daily, by infilling a date for any missing, with this indicated on the miss column. This data set reports average daily horizontally and vertically polarized brightness temperatures and sea ice concentrations on 25 km resolution north and south polar stereographic grids. お湯で割ってもよしお酒で割ってもよし‼️ . They contain raw observation counts and calibration parameters that are read and converted to brightness temperatures according to the documentation of the data [REFERENCE]. 9% based on the The data from years 2002-2018 are also available at the data publisher PANGAEA, one data set each for Arctic and Antarctic, AMSR-E-based and AMSR2-based: Melsheimer, Christian, Spreen, Gunnar (2020): AMSR-E ASI sea ice concentration data, Arctic, version 5. The service is part of the GMES project Polar View and of the Arctic Regional Ocean Observing System (Arctic ROOS). Feb 17, 2021 · Another SIC product, based on the ASI algorithm at higher grid resolutions of 3. Below, you find an example for the daily mean MODIS-AMSR2 sea-ice concentration. A summary of the theoretical basis and initial performance of the algorithms that are used to derive sea ice concentration, ice temperature, and snow depth on sea ice from newly acquired Earth Observing System-Aqua/Advanced Microwave Scanning Radiometer-EOS (AMSR-E) radiances is presented. , 2008) which is applied to microwave radiometer data of the sensors AMSR-E (Advanced Microwave Scanning Radiometer for EOS) on the NASA satellite Aqua, and AMSR2 (Advanced Microwave Scanning Radiometer 2) on the JAXA satellite GCOM-W1. AMSR2 continues AMSR-E observations with several improvements. 3 days ago · AMSR-2 Daily Oceanographic Data Products (Current and Archived) - Browse Images and Download geophysical data: sea surface temperature, ocean surface wind speed, atmospheric water vapor, cloud liquid water, rain rate SSMIS and AMSR2 sea ice concentrations calculated daily in near real time. AMSR-E/AMSR-2 The AMSR-E microwave radiometer was launched on May 4, 2002, on the AQUA satellite of NASA's Earth Observing System (EOS). Introduction The AWI AMSR2 ice concentration product is based on previous developments at the University of Bremen (UB) and the University of Hamburg (UHH) [1,2,3,4]. By combining the AMSR2 data with the AMSR-E data, a coastal polynya dataset that covers 20 years with higher spatial resolution can be produced. This is nearly three times the resolution of the standard sensor SSM/I at Sep 15, 2019 · For classification-based SIC calculations, supervised classification using CNN is performed to generate classification maps, and the SICs are then computed using classified MODIS pixels in the 10 km IFOV of AMSR2 as follows: SIC MODIS / CLS = number of MODIS ice pixels in AMSR 2 s IFOV total number of MODIS pixels in AMSR 2 s IFOV × 100. amsr2_south_files() Value data frame of date and url and miss which is TRUE if infilled Details Near-real-time passive microwave estimates of daily sea ice concentration at 3. 2008). 9 至 89. These sea ice concentration data are retrieved with the ARTIST Sea Ice (ASI) algorithm (Spreen et al. Due to a malfunction of the antenna of the AMSR-E instrument there will be no further sea ice concentration maps available in the near future. 5 km Brightness Temperatures, Sea Ice Concentration, Motion & Snow Depth Polar Grids, Version 1 1 Introduction This Document is intended for users of the composite AMSU-B/MHS and AMSR-E/2 total water vapor (TWV) product from the University of Bremen, Institute of Environmental Physics (IUP). i7o9bg k5zycv 0ew1dk7l vpv tuoatw yzgl j9dzyywy zl7ppxj yjql zqlg8

Bremen amsr 2. 4 (NetCDF) (June 2002 - September 2011).