AMSR/AMSR-E HIGH-RESOLUTION IMAGE ARCHIVE: ONLINE HELP

INTRODUCTION

SWATH SUBSET

DAILY/POLAR REGION

DAILY/SPECIFIC REGION

INTRODUCTION

This page explains how to use the AMSR/AMSR-E HIGH RESOLUTION IMAGE ARCHIVE. The system allows you to browse AMSR and AMSR-E subset images in three different ways with original spatial sampling (approximately 10 km, except for 89 GHz brightness temperature with 5 km sampling) that is finer than that of . In addition, brightness temperature images are available within 3 to 10 hours from observation. This would be useful for near-real-time users to check rapidly changing phenomena. The images of geophysical parameters are produced and uploaded approximately twenty-four hours after observation.

Table 1 shows available sensors and their temporal coverage.

Table 2 shows available products by image type.

Table 2 Available products in each image type.
Products	Code	Swath Subset	Daily/Polar Region	Daily/Specific Region
6 GHz vertical polarization brightness temperature	6GHz V-pol	○	○	○
37 GHz vertical polarization brightness temperature	37GHz V-pol	○	○	○
89 GHz vertical polarization brightness temperature	89GHz V-pol	○	○	○
Sea Ice Concentration	ICO	×	○	○
Soil Moisture	SMO	×	×	×
Snow Water Equivalent	SWE	×	×	×

Note: ○ Available, X Not available.

This page is best viewed by Internet Explorer 4.0 (or higher) or Netscape Navigator 4.0 (or higher).

SWATH SUBSET

On this page, you can browse subset images of individual paths of AMSR and AMSR-E.
Page usage and selectable parameters are described bellow.

1.Sensor

Select AMSR or AMSR-E by radio button.

2.Date

Select the observation date from the pull-down menu. The default is the date of the latest browse data.

3.Ascending/Descending

Select ascending orbit or descending orbit

4.Path Number(See " Definition of path number .")

Select path number . There are two ways of selecting the path number.One is to use a pull-down menu; the other is to use a clickable map.

   To use map

   (1)Click "Path map is here".

   (2)Click the target region of the map. The selected path number and latitude range appear, and the corresponding browse image is displayed after click "SUBMIT" button.


5.Latitude Range

Select the latitude range. Since each path is assigned to be subset in advance as shown in Fig. 1, locations of the image are determined by selecting the latitude range and path number. Contiguous latitude ranges overlapp each other by 1 degree.

Figure 1. Example image of subset area
パス切り出し画像の範囲の例

6.Brightness Temp

Select channels of brightness temperature from the pull-down menu. You cannot select Brightness Temperature and Geophysical Product at the same time.

7.Geophysical Product

elect the geophysical product from the pull-down menu. The code is explained at the bottom of each page. You cannot select Geophysical Product and Brightness Temperature (or Temperature Scale) at the same time.

8.Temp.Scale

Select the temperature scale for displaying brightness temperature from the pull-down menu. You can choose the appropriate temperature range from four scales, whole range (145-310 [K]), low range (150-205 [K]), middle range (200-255 [K]) and high range (250-305 [K]).
A color bar is displayed at the right side of the browse image.

9.Browse Image Window

The browse image corresponding to the specified condition is displayed. The format of the image is jpeg with 72 dpi resolution. You can jump to the previous or next image of the same path (the recurrent periods are four days for AMSR and 16 days for AMSR-E) by clicking ,. The message "file not found" is displayed when the specified image does not exist.

10.Code Format

Three characters are provided for each part of the code; ,   and algorithm version. The codes of available geophysical products are tabulated.

DAILY / POLAR REGION

1.Sensor

Select AMSR or AMSR-E by radio button.

2.Date

Select the observation date from the pull-down menu. The default is the date of the latest browse data.

3.Brightness Temp

Select channels of brightness temperature from the pull-down menu. You cannot select Brightness Temperature and Geophysical Product at the same time.

4.Geophysical Product

Select the geophysical product from the pull-down menu. The code is explained at the bottom of each page. You cannot select Geophysical Product and Brightness Temperature (or Temperature Scale) at the same time.

5.Temp.Scale

"Temp.Scale" is fixed 145 - 310 (K) . Temperature scale is displayed in the right side of image .

6.Thumbnail image

The thumbnail image corresponding to the specified condition is displayed. The format of the image is jpeg. You can move to images for t he previous or next day by clicking , .

7.Detailed image window

The browse image corresponding to the specified condition is displayed. The format of the image is jpeg with 288 dpi resolution. You can move to images for the previous or next day by clicking by clicking ,. The message "file not found" is displayed when the specified image does not exist.

8.Code Format

Three characters are provided for each part of the code; , and algorithm version. The codes of available geophysical products are tabulated.

DAILY / SPECIFIC REGION

1.Sensor

Select AMSR or AMSR-E by radio button.

2.Date

Select the observation date from the pull-down menu. The default is the date of the latest browse data.

3.Brightness Temp

Select channels of brightness temperature from the pull-down menu. You cannot select Brightness Temperature and Geophysical Product at the same time.

4.Geophysical Product

Select the geophysical product from the pull-down menu. The code is explained at the bottom of each page. You cannot select Geophysical Product and Brightness Temperature (or Temperature Scale) at the same time.

5.Temp.Scale

Select the temperature scale for displaying brightness temperature from the pull-down menu. You can choose the appropriate temperature range from four scales, whole range (145-310 [K]), low range (150-205 [K]), middle range (200-255 [K]) and high range (250-305 [K]).
A color bar is displayed at the right side of the browse image.

6.Thumbnail image

The thumbnail image corresponding to the specified condition is displayed. The format of the image is jpeg. You can move to images for t he previous or next day by clicking , .

7.Detailed image window

The browse image corresponding to the specified condition is displayed. The format of the image is jpeg with 144 dpi resolution. You can move to images for the previous or next day by clicking by clicking , . The message "file not found" is displayed when the specified image does not exist.

8.Code Format

Three characters are provided for each part of the code; , and algorithm version. The codes of available geophysical products are tabulated.