Data Announcements

New data set release: High Mountain Asia GFDL FLOR Modeled Daily Precipitation for Extreme Analysis

15 July 2019

The High Mountain Asia GFDL FLOR Modeled Daily Precipitation for Extreme Analysis, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set includes three climate simulations of daily precipitation over the Himalayan region for summer and winter: two 30-member ensemble simulations from 1961-2000 and 2061-2100, and one present-day climate simulation from 1982 to 2017 forced with observed sea surface temperatures, air temperatures, and winds. These simulations were produced with the NOAA Geophysical Fluid Dynamics Laboratory Forecast-oriented Low Ocean Resolution (GFDL FLOR) version of the CM2.5 model at a spatial resolution of 0.625º x 0.5º.

Data set DOI: https://doi.org/10.5067/I0T1I4WNQ462

New data set releases: High Mountain Asia landslide and snowfield data sets

5 June 2019

Two additional High Mountain Asia data sets are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The High Mountain Asia Landslide Catalog, Version 1 data set includes landslide event locations and characteristics from February 1956 to December 2018. The High Mountain Asia Langtang Snow Properties, Version 1 data set contains surface area measurements from the Yala Glacier, Nepal on 23-24 April 2018. Both data sets are available now as early releases with no documentation. User guides will be available in the near future.

Access to the data sets and related documentation are provided on each data set web page at the NSIDC DAAC:

High Mountain Asia Landslide Catalog, Version 1 DOI: https://doi.org/10.5067/5ST0TZCD9RQ3

High Mountain Asia Langtang Snow Properties, Version 1 DOI: https://doi.org/10.5067/VWBLZDUZSTK2

New data set releases: High Mountain Asia glacier thickness change data sets

6 May 2019

Additional High Mountain Asia glacier thickness change data sets are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). These data sets contain thickness change measurements for approximately 650 Himalayan glaciers between 1975 and 2000, and 1040 Himalayan glaciers between 2000 and 2016. These data were derived from KH-9 HEXAGON and ASTER digital elevation models (DEMs) and are provided at a spatial resolution of 30 m.

Access to the data sets and related documentation are provided on each data set web page at the NSIDC DAAC:

High Mountain Asia Average Glacier Thickness Change from Multi-Sensor DEMs, Version 1 DOI: https://doi.org/10.5067/93BANQZIG1KD

High Mountain Asia Glacier Thickness Change Mosaics from Multi-Sensor DEMs, Version 1 DOI: https://doi.org/10.5067/KE2LG72Z89LN

New data set release: High Mountain Asia LIS Model Terrestrial Hydrological Parameters

15 April 2019

The High Mountain Asia LIS Model Terrestrial Hydrological Parameters, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains estimates of water, energy fluxes, and land surface states that were simulated using the Noah-Multiparameterization Land Surface Model (Noah-MP LSM) Version 3.6 within the NASA Land Information System (LIS) Version 7.2. These data are provided in a spatial resolution of 0.25º x 0.25º with temporal coverage from 1 February 2003 to 31 January 2018.

Data set DOI: https://doi.org/10.5067/ENXL5FDN5V8C

New data set release: High Mountain Asia Gridded Glacier Thickness Change from Multi-Sensor DEMs

20 March 2019

The High Mountain Asia Gridded Glacier Thickness Change from Multi-Sensor DEMs, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains gridded thickness change measurements for approximately 650 Himalayan glaciers between 1975 and 2000, and 1040 Himalayan glaciers between 2000 and 2016. These data were derived from KH-9 HEXAGON and ASTER digital elevation models (DEMs) and are provided at a spatial resolution of 30 m. 

Data set DOI: https://doi.org/10.5067/GGGSQ06ZR0R8

Level of service update: High Mountain Asia TRMM-derived 3B42 Extreme Precipitation Indices

26 February 2019
The High Mountain Asia TRMM-derived 3B42 Extreme Precipitation Indices, Version 1 data set has been updated from a basic to a standard level of service at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). More extensive documentation and support options are now available. Please see our Adding clarity to NSIDC data support with new Level of Service (LoS) model article for more information.   This data set features seven standard annual mean extreme precipitation indices selected on the basis of potential relevance to landslide activity from the 27 indices established by the joint CCl/CLIVAR/JCOMM Expert Team (ET) on Climate Change Detection and Indices (ETCCDI). The seven indices were calculated from 3B42 version 7 daily satellite precipitation estimates, and are provided from 50º N to 50º S at a spatial resolution of 0.25º x 0.25º.
 
Data set DOI: https://doi.org/10.5067/5VPZ8AZ9LAKP

Level of service update: High Mountain Asia GFDL FLOR Modeled Extreme Precipitation Indices

26 February 2019
The High Mountain Asia GFDL FLOR Modeled Extreme Precipitation Indices, Version 1 data set has been updated from a basic to a standard level of service at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). More extensive documentation and support options are now available. Please see our Adding clarity to NSIDC data support with new Level of Service (LoS) model article for more information. This data set contains seven standard annual mean extreme precipitation indices related to landslide activity. These data are derived from a Global Climate Model (GCM), specifically the Geophysical Fluid Dynamics Laboratory (GFDL) Forecast-oriented Low Ocean Resolution of the CM2.5 (CM2.5-FLOR or FLOR) model modeled precipitation estimates and cover the Himalayan region at a spatial resolution of 0.625º x 0.5º.   Data set DOI: https://doi.org/10.5067/W8DR3VBR27PX

New data set release: High Mountain Asia GFDL FLOR Modeled Extreme Precipitation Indices, Version 1

7 December 2018
The High Mountain Asia GFDL FLOR Modeled Extreme Precipitation Indices, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).    This data set features seven standard annual mean extreme precipitation indices spanning 2000 to 2016 that were selected on the basis of potential relevance to landslide activity. The seven indices were simulated by the Geophysical Fluid Dynamics Laboratory Forecast-oriented Low Ocean Resolution version of CM2.5 (GFDL FLOR).
 
These data are available as part of an early release, and as such, minimal documentation is currently available. An increased Level of Service and more detailed documentation will become available in the future.   
Data set DOI: https://doi.org/10.5067/W8DR3VBR27PX

New data set release: High Mountain Asia TRMM-derived 3B42 Extreme Precipitation Indices, Version 1

7 December 2018
The High Mountain Asia TRMM-derived 3B42 Extreme Precipitation Indices, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).   This data set features seven standard annual mean extreme precipitation indices spanning 1999 to 2017 that were selected on the basis of potential relevance to landslide activity. The seven indices were calculated from 3B42 Version 7 daily satellite precipitation estimates.

These data are available as part of an early release, and as such, minimal documentation is currently available. An increased Level of Service and more detailed documentation will become available in the future. 
 

Data set DOI: https://doi.org/10.5067/5VPZ8AZ9LAKP

New data set release: High Mountain Asia Gridded Glacier Thickness Change from Multi-Sensor DEMs

6 December 2018

The High Mountain Asia Gridded Glacier Thickness Change from Multi-Sensor DEMs, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains gridded thickness changes for approximately 650 Himalayan glaciers between 1975 and 2000, and 1040 Himalayan glaciers between 2000 and 2016. The data were derived from HEXAGON KH-9 and ASTER digital elevation models (DEMs).

This data set is available as part of an early release. Minimal documentation is currently available. An increased Level of Service and more detailed documentation will be available in the future.

Data Set DOI: https://doi.org/10.5067/GGGSQ06ZR0R8

High Mountain Asia ASCAT Freeze/Thaw/Melt Status data release

19 July 2018

The National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce the release of the High Mountain Asia ASCAT Freeze/Thaw/Melt Status, 2009-2017 data set. This data set contains bulk landscape frozen or thawed status over seasonally frozen land as well as snowmelt status over glacierized areas for the High Mountain Asia region. These data are derived from vertically polarized (V-pol) C-band (5.255 GHz) backscatter measurements acquired by the Advanced Scatterometer (ASCAT) on EUMETSAT Metop-A and Metop-B satellites and are posted on Earth-fixed 4.45 km grids.

Data set DOI: https://doi.org/10.5067/L319IEPK63VC

High Mountain Asia ASCAT Freeze/Thaw/Melt data now available

14 June 2018

The High Mountain Asia ASCAT Freeze/Thaw/Melt Status data is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

This Level-3 data set provides freeze/thaw/melt status over seasonally frozen land and snowmelt status over glaciated areas for high mountain Asia glacier and snow regions. Daily F/T/M status is derived from vertically polarized (V-pol), C-band (5.255 GHz) Advanced Scatterometer (ASCAT Metop-A and Metop-B) backscatter measurements.

This data set is being made available with minimal documentation as part of an early release. NSIDC will provide an increased level of support and more detailed documentation in the future.

Data set DOI: https://doi.org/10.5067/L319IEPK63VC

High Mountain Asia 8-meter Digital Elevation Models Now Available

12 December 2017

Three High Mountain Asia (HMA) 8-meter Digital Elevation Models (DEMs) are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

The DEMs are generated from very-high-resolution imagery from DigitalGlobe satellites during the period of 28 January 2002 to 24 November 2016 and cover the spatial region from Tien Shan and Hindu Kush to Eastern Himalaya. This region contains one of the highest concentrations of snow and glaciers outside of the polar regions, and the advance or retreat of glaciers in this part of the world provides a window into Earth’s changing climate.

The new HMA data sets include:

High Mountain Asia 8-meter DEM Mosaics Derived from Optical Imagery, Version 1
Data set DOI: http://dx.doi.org/10.5067/KXOVQ9L172S2

High Mountain Asia 8-meter DEMs Derived from Along-track Optical Imagery, Version 1
Data set DOI: http://dx.doi.org/10.5067/GSACB044M4PK

High Mountain Asia 8-meter DEMs Derived from Cross-track Optical Imagery, Version 1
Data set DOI: http://dx.doi.org/10.5067/0MCWJJH5ABYO

To access HMA data and documentation, visit the NSIDC DAAC High Mountain Asia Data Web site.