Global Precipitation Measurement (GPM)@Core Satellite DPR dataset


IDENTIFICATION INFORMATION

Name Global Precipitation Measurement (GPM)@Core Satellite DPR dataset
Metadata Identifier GPM_DPR20181216225240-en

CONTACT

CONTACT on DATASET

Name G-Portal Support Desk
Organization Japan Aerospace Exploration Agency
Address 2-1-1 Sengen, Tsukuba, Ibaraki, 305-8505, Japan
E-mail z-gportal-support@jaxa.jp

DOCUMENT AUTHOR

Name Satoko Miura
Organization JAXA/Satellite Applications and Operations Center (SAOC)

DATASET CREATOR

Name JAXA

DATE OF THIS DOCUMENT

2018-12-16

DATE OF DATASET

  • creation : 2016-04-11

DATASET OVERVIEW

Abstract

The Dual-frequency Precipitation Radar (DPR) on board the GPM core satellite is composed of two radars: a Ku-band (13.6-GHz) Precipitation Radar (KuPR) and a Ka-band (35.5-GHz) Precipitation Radar (KaPR).

The KaPR instrument aims at sensitive observation, and can detect weak rainfall and snowfall that cannot be measured by KuPR. Since the KuPR instrument can detect heavier rainfall, simultaneous observation by the KaPR and KuPR will enable accurate measurement of precipitation from heavy rainfall in tropics to weak snowfall in high-latitudes.

Rain echo is affected by precipitation attenuation, and its amount depends on radar frequency and raindrop size. By matching position of radar beams and timing of transmitted pulses for KuPR and KaPR, and by measuring precipitation particles at the same place simultaneously by dual-frequency, size of precipitation particles (raindrop size distribution) can be estimated by differences in precipitation attenuation.

This will improve the accuracy of precipitation estimation since the information could not be obtained by single-frequency radar, such as the TRMM’s PR. It is also expected to identify rainfall and snowfall by using differences in precipitation attenuation for dual-frequency.

Topic Category(ISO19139)

  • climatologyMeteorologyAtmosphere

Temporal Extent

Begin Date 2014-03-08
End Date Under Continuation

Geographic Bounding Box

North bound latitude 65
West bound longitude -180
Eastbound longitude 180
South bound latitude -65

Keywords

Keywords on Dataset

Keyword Type Keyword Keyword thesaurus Name
theme [Atmosphere ] > [Precipitation ] > [Precipitation Amount ], [Atmosphere ] > [Precipitation ] > [Rain ] GCMD_science

Online Resource

DATA PROCESSING

Data Processing (1)

General Explanation of the data producer's knowledge about the lineage of a dataset

The followings products are available;

[Level2]

Reflectivities, 3D Precipitation

Spectral latent heating

[Level3]

Precipitation (daily)

Precipitation (monthly)

Spectral latent heating (Orbit)

Spectral latent heating (monthly)

USE CONSTRAINTS

Data Policy by Data Provider

Please refer to "https://www.gportal.jaxa.jp/gp/gportal-agreement.html"


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