MOD10 MODIS Snow product for New Zealand

This Report assembles an eleven year time series for the period 2001 to 2011 of snow cover area in New Zealand. A dataset is prepared based on the MODIS/Terra Snow Cover 8-Day L3 Global 500m Grid, Version 5 data (MOD10A2.5, available from the National Snow and Ice Data Center NSIDC, Boulder, Colorado USA). The MOD10A2.5 dataset indicates the maximum snow cover extent over an eight-day compositing period. It provides a seamless coverage of snow presence at regularly spaced time intervals, while minimizing the obscuration by clouds. Each year is composed of 46 epochs, each of 8 consecutive days starting on the first day of the year and extending in to the next year. An algorithm based on a trajectory analysis of land cover through time is used to infer the status of remaining pixels obscured by cloud in the composite period. This leads to a time series of virtually cloud-free composite snow cover maps that are readily imported into GIS packages for analysis of spatial and temporal variability.

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. . https://dc.niwa.co.nz:/niwa_dc/srv/api/records/6aa3ff62-d210-5aad-4290-fed8814450e1

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Date ( Creation ): 2012-05-28T13:54:00

Date ( Revision ): 2012-05-28T13:54:00

Purpose: This dataset was assembled to enable NIWA to assess the suitability of the MODIS MOD10 snow product for: (i) validation of output of snow models (ii) assimilation into operational snow models

Credit: The data were assembled by Dr Pascal Sirguey of Otago University, under contract from NIWA. The project was sponsored by Drew Lorrey with funding from project CLCO1201, and led by Ross Woods, with advice from Tim Kerr

Status: Completed

Principal investigator

NIWA National Institute of Water & Atmospheric Research

User

NIWA

Spatial representation type: Vector

Topic category

Climatology, meteorology, atmosphere
Geoscientific information
Imagery base maps earth cover

Description: New Zealand

TimePeriod: 2001-01-01T00:00:002011-12-31T00:00:00

snow, remote sensing, modis, new zealand

NIWA Project Codes

CLCO1202

Use limitation: Many limitations of MODIS MOD10 cloud recognition and snow cover algorithms persist into this product. Cloud maybe be misclassified as snow or vice versa.

Use limitation: Awaiting review by Drew Lorrey on what access is appropriate

Classification

Language: English

OnLine resource: Point of truth URL of this metadata record

OnLine resource

mdb:MD_Metadata

Metadata identifier: 6aa3ff62-d210-5aad-4290-fed8814450e1

Custodian

NIWA National Institute of Water and Atmospheric Research

Date info ( Creation ): 2015-09-17T10:08:02

Title: ISO 19115-3

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