TRMM资料说明

雪鹰

http://disc.sci.gsfc.nasa.gov/precipitation/documentation/TRMM_README/TRMM_2A23_readme.shtml#Rain_Type_Flag

sywyx

Data Format Structure for 2A23, PR Rain Characteristics
Name Type Record
Size
(byte) Dim Size/
# of Records Scaled
by Range Unit Description
ECS Core Metadata Char Attribute 10,000  - - - - ECS Core Metadata
PS Metadata Char Attribute 10,000  - - - - Product Specific Metadata
Swath Structure Char Attribute 5,000  - - - - The specification of the swath geometry
Scan Time Vdata Table 8  nscan - - - The time associated with the scan, expressed as 8-byte float UTC second of the day.
Latitude Float SDS 4 nray*nscan - - degree The earth location of the center of the IFOV at the altitude of the earth ellipsoid. The first dimension is latitude and longitude, in that order. The next dimensions are numbers of pixels and scans.
Longitude Float SDS 4 nray*nscan - - degree The earth location of the center of the IFOV at the altitude of the earth ellipsoid. The first dimension is latitude and longitude, in that order. The next dimensions are numbers of pixels and scans.
Scan Status Vdata Table 15  nscan - - - The status of each scan.
Navigation Vdata Table 88  nscan - - - Spacecraft geocentric information
Rain Flag Integer SDS 1  nray*nscan - - - The rain flag is identical to the Minimum Echo Flag of 1C21.
0: no rain
10: rain possible
11: rain possible (echo greater than rain threshold #1 in clutter region)
12: rain possible (echo greater than rain threshold #2 in clutter region)
13: rain possible
15: rain possible
20: rain certain
Rain Type Integer SDS 2  nray*nscan - - - The Rain Type Flag.

-88 is missing value for no rain and -99 data missing.

Shallow Rain Flag Integer SDS 1  nray*nscan - - - The Warm Rain Flag is set as follows:
= 10:  maybe shallow, isolated
= 11:  shallow isolated (with confidence)
= 20:  maybe shallow but not isolated
= 21:  shallow but not isolated (with confidence)
= 0:    when not shallow
< 0:    when not rain certain or data missing
Status Flag Integer SDS 1  nray*nscan - - - The Status Flag indicates whether the data are obtained over sea or land and the confidence.
Height of Bright Band Integer SDS 2  nray*nscan - - - A positive Height of Bright Band is defined in meters above mean sea level. Negative values are defined as follows:
-1111: No bright band
-8888: No rain
-9999: Data missing.
Bright Band Intensity Integer SDS 4  nray*nscan - - - The maximum value of the bright band (dBZ) obtained from normal samples. The range is from 0.00 to 100.0 dBZ. Negative values are defined as:
-1111: No bright band
-8888: No rain
-9999: Data missing.
Bright Band Peak Bin Integer SDS 2  nray*nscan - - - A positive range bin number that corresponds to the peak of the bright band. This bin number is in the Level-1 bin numbering scheme (125m, see Level-1 PR description). Negative values are defined as:
-1111: No bright band
-8888: No rain
Bright Band Boundary Integer SDS 2  2*nray*nscan - - - Positive bin number of the boundary of the bright band. The first index indicates the bottom. This bin number are in the Level-1 bin numbering scheme (125m, see Level-1 PR description). Negative values are defined as:
-1111: No bright band
-8888: No rain
Bright Band Width Integer SDS 2  nray*nscan - - - The width of the bright band in meters.Negative values are defined as:
-1111: No bright band
-8888: No rain
Bright Band Status Integer SDS 2  nray*nscan - - - Indicates the status of the bright band detection. This flag is a composite of three internal status flags: BB_status[j] = BB_detection_status * 16
                     + BB_boundary_status[j] * 4
                     + BB_width_status[j]
where each status on the right hand side takes the following values: 1: poor, 2: fair, 3: good.
Height of Freezing Level Integer SDS 2  nray*nscan - - - A positive Height of Freezing Level is the height of the 0°C isotherm above mean sea level in meters, estimated from climatological surface temperature data. Negative values are defined as:
-5555: When error occurred in the estimation of Height of Freezing Level
-8888: No rain
-9999: Data missing
Height of Storm Integer SDS 2  nray*nscan - - m A positive Height of Storm is the height of the storm top above mean sea level in meters. A positive Height of Storm is given only when rain is present with a high degree of confidence in 1C21 (i.e., the Minimum Echo Flag in 1C21 has the value of 2 [rain certain]). Negative values are defined as:
-1111: Height of Storm not calculated because rain is not present with a high level of confidence in 1C21
-8888: No rain
-9999: Data missing
Spare Float SDS 2  nray*nscan - - - Spare will characterize the width of the bright band. Since this characterization requires much research, the meaning is not disclosed.



呵呵

leswell

看不懂，求指教怎么用

lilyare_2006

赞一个！谢谢分享

大石头

点点曾经好年轻!!!!~~~

zixan1989

赞一个 谢谢分享

somnuszhouying

谢谢分享

小1龙2虾3

楼主有2A25的资料说明么？

senga

小1龙2虾3 发表于 2015-9-18 11:33
楼主有2A25的资料说明么？

亲，请问您TRMM2A25的数据会处理了嘛？

小1龙2虾3

senga 发表于 2016-4-27 19:04
亲，请问您TRMM2A25的数据会处理了嘛？

嗯，会一些了，你想了解什么？