Modelling and measurement of soil moisture content based on a remote sensing method for applications in semi-arid tropics:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Bonn
Inst. für Landtechnik
1999
|
| Schriftenreihe: | Max-Eyth-Gesellschaft für Agrartechnik / Arbeitskreis Forschung und Lehre: Forschungsbericht Agrartechnik des Arbeitskreises Forschung und Lehre der Max-Eyth-Gesellschaft (MEG)
340 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Zugl.: Bonn, Univ., Diss., 1999 |
| Beschreibung: | XVIII, 266 S. graph. Darst. |
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| 100 | 1 | |a Salim, Baanda Ayub |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Modelling and measurement of soil moisture content based on a remote sensing method for applications in semi-arid tropics |c von Baanda A. Salim |
| 264 | 1 | |a Bonn |b Inst. für Landtechnik |c 1999 | |
| 300 | |a XVIII, 266 S. |b graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 1 | |a Max-Eyth-Gesellschaft für Agrartechnik / Arbeitskreis Forschung und Lehre: Forschungsbericht Agrartechnik des Arbeitskreises Forschung und Lehre der Max-Eyth-Gesellschaft (MEG) |v 340 | |
| 500 | |a Zugl.: Bonn, Univ., Diss., 1999 | ||
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Datensatz im Suchindex
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TABLE
OF
CONTENTS
ABSTRACT
.
III
KURZFASSUNG
.
V
ACKNOWLEDGEMENTS
.
VII
DEDICATION
.
VIII
TABLE
OF
CONTENTS
.
IX
LIST
OF
FIGURES
.
XIII
LIST
OF
TABLES
.
XVI
LIST
OF
SYMBOLS
.
XVII
1
INTRODUCTION
AND
STUDY
OBJECTIVES
.
1
1.1
INTRODUCTION
.
1
1.2
STUDY
OBJECTIVES
.
6
1.3
OUTLINE
OF
THE
THESIS
.
6
2
CHOICE
OF
THE
STUDY
AREA
.
7
2.1
INTRODUCTION
.
7
2.2
THE
SEMI-ARID
TROPICS
(SAT)
.
7
2.2.1
GENERAL
OVERVIEW
.
7
2.2.2
THE
SEMI-ARID
REGIONS
AND
REMOTE
SENSING
.
12
2.3
KNOWLEDGE
OF
SOIL
MOISTURE
CONTENT
AND
ITS
IMPORTANCE
.
13
2.4
THE
OCCURRENCE
AND
SIGNIFICANCE
OF
BARE
SOILS
IN
THE
SEMI-ARID
REGIONS
.
14
2.5
BARE
SOILS
AND
REMOTE
SENSING
.
15
3
MEASUREMENT
OF
SOIL
MOISTURE
CONTENT
.
17
3.1
BRIEF
REVIEW
OF
THE
MEASUREMENT
METHODS
.
17
3.2
COUPLING
OF
MEASUREMENT
WITH
MODELLING
.
18
3.3
CURRENT
AND
FUTURE
DEVELOPMENTS
.
19
4
REMOTE
SENSING
OF
SOIL
MOISTURE
CONTENT
.
21
4.1
GENERAL
OVERVIEW
.
21
4.1.1
INTRODUCTION
.
21
4.1.2
REMOTE
SENSING
PLATFORMS
.
21
4.1.3
CONSIDERATION
OF
SPECTRAL
BANDS
AND
THEIR
SPATIAL
AND
TEMPORAL
RESOLUTION
FOR
HYDROLOGICAL
APPLICATION
OF
REMOTELY
SENSED
DATA
.
22
4.1.4
PHYSICAL
CONSIDERATIONS
OF
REMOTE
SENSING
.
22
4.1.5
HYDROLOGICAL
APPLICATION
OF
REMOTELY
SENSED
DATA
.
23
4.2
MICROWAVE
REMOTE
SENSING
OF
SOIL
MOISTURE
.
25
4.3
THERMAL
INFRARED
REMOTE
SENSING
.
28
4.3.1
GENERAL
OVERVIEW
.
28
4.3.2
TERMINOLOGY
.
29
4.3.3
THEORETICAL
BACKGROUND
.
30
4.3.4
USE
OF
INFRARED
THERMOMETRY
.
32
4.3.5
USING
INFRARED
THERMOMETRY
TO
ESTIMATE
NEAR-SURFACE
SOIL
WATER
CONTENT
.
33
4.4
EXTRACTION
OF
REMOTE
SENSING
INFORMATION
.
36
4.4.1
THE
INFORMATION
EXTRACTION
PROBLEM
.
36
4.4.2
APPROACHES
TO
SOLVING
THE
INFERENCE
PROBLEM
.
36
4.5
INFERRING
PROFILE
SOIL
MOISTURE
CONTENT
FROM
SURFACE
MEASUREMENTS
.
37
4.5.1
KNOWLEDGE-BASED
APPROACH
.
38
4.5.2
STATISTICAL
METHODS
.
39
X
4.5.3
INVERSION
METHODS
.
40
4.5.4
INTEGRATION
WITH
MODELLING
.
40
4.6
CONTINUOUS
OPERATIONAL
SYSTEM
FOR
ESTIMATION
OF
ROOT-ZONE
MOISTURE
.
41
5
THEORY
AND
MODELLING
OF
HEAT
AND
WATER
FLOW
IN
THE
SOIL
.
44
5.1
COUPLED
TRANSPORT
PROCESSES
IN
UNSATURATED
POROUS
MEDIA
.
44
5.1.1
GENERAL
OVERVIEW
.
44
5.1.2
THEORY
OF
COUPLED
TRANSPORT
PROCESSES
IN
UNSATURATED
POROUS
MEDIA
.
44
5.2
THE
SURFACE
ENERGY
BALANCE
.
48
5.2.1
ENERGY
PARTITIONING
AT
THE
SOIL
SURFACE
.
48
5.2.2
SHORTWAVE
RADIATION
TERMS
.
50
5.2.3
LONGWAVE
RADIATION
TERMS
.
52
5.3
TRANSPORT
OF
HEAT
FLUXES
IN
THE
ATMOSPHERIC
BOUNDARY
LAYER
.
57
5.3.1
EXCHANGE
AT
THE
SURFACE
.
57
5.4
FLOW
OF
HEAT
IN
THE
SOIL
.
64
5.4.1
HEAT
FLOW
MODEL
.
64
5.4.2
SOIL
HEAT
FLUX
.
66
5.4.3
PARAMETERS
.
68
5.5
FLOW
OF
WATER
IN
THE
SOIL
.
71
5.5.1
SOIL
HYDRAULIC
PROPERTIES
.
71
5.5.2
SOIL
WATER
CHARACTERISTICS
.
72
5.5.3
UNSATURATED
HYDRAULIC
CONDUCTIVITY
.
74
5.5.4
SURFACE
INFILTRATION
.
76
5.6
ESTIMATING
NEAR-SURFACE
SOIL
WATER
CONTENT
FROM
INFRARED
THERMOMETRY
(IRT)
MEASUREMENTS
.
77
5.6.1
BASIC
EQUATIONS
.
77
5.6.2
CALCULATION
OF
THE
WEIGHTED-AVERAGE
SOIL
WATER
CONTENT
.
79
5.7
CORRECTION
FOR
CHANGING
SOLAR
RADIATION
IN
THE
SIMULATED
TEMPERATURE
DIFFERENCE
(TD)
.
81
5.8
NUMERICAL
IMPLEMENTATION
.
83
5.8.1
DISCRETIZATION
.
83
5.8.2
COMPUTER
PROGRAM
DESCRIPTION
.
86
5.8.3
COMPUTER
MODEL
VALIDATION
.
91
5.8.4
EVALUATION
CRITERIA
OF
MODEL
PERFORMANCE
.
92
6
FIELD
EXPERIMENTS
.
94
6.1
GENERAL
OVERVIEW
.
94
6.1.1
ERRORS
.
94
6.2
GENERAL
CHARACTERISTICS
OF
THE
STUDY
AREA
.
95
6.3
SOIL
SURVEY,
LABORATORY
ANALYSIS
AND
SOIL
CLASSIFICATION
.
97
6.4
FIELD
EXPERIMENTAL
LAYOUT
.
98
6.5
FIELD
MEASUREMENTS
.
98
6.5.1
GENERAL
OVERVIEW
OF
MEASUREMENT
AND
INSTRUMENTATION
PRINCIPLES
.
98
6.5.2
EQUIPMENT
AND
SENSOR
INSTALLATION
.
103
6.5.3
DESCRIPTION
OF
THE
MEASUREMENTS
CARRIED
OUT
.
109
6.5.4
FIELD
CALIBRATION
OF
SENSORS
.
117
6.6
CORRECTION
FOR
CHANGING
SOLAR
RADIATION
IN
THE
MEASUREMENT
OF
TEMPERATURE
DIFFERENCE
(TD)
.
119
XI
7
RESULTS
AND
DISCUSSION
.
122
7.1
PREVAILING
CONDITIONS
DURING
THE
EXPERIMENTAL
PERIOD
.
122
7.1.1
INTRODUCTION
.
122
7.1.2
SOLAR
RADIATION
.
122
7.1.3
SUNSHINE
HOURS
.
122
7.1.4
NET
RADIATION
.
123
7.1.5
SOIL
HEAT
FLUX
.
125
7.1.6
AIR
TEMPERATURE
.
126
7.1.7
WIND
SPEED
.
126
7.1.8
RELATIVE
HUMIDITY
.
128
7.1.9
VAPOUR
PRESSURE
DEFICIT
.
129
7.1.10
SOIL
SURFACE
RADIANT
TEMPERATURE
.
130
7.1.11
PROFILE
SOIL
TEMPERATURES
.
131
7.1.12
PAN
EVAPORATION
.
132
7.1.13
PRECIPITATION
.
133
7.1.14
SOIL
WATER
CONTENT
.
134
7.1.15
MATRIC
POTENTIAL
.
134
7.2
ESTIMATION
OF
NEAR-SURFACE
SOIL
MOISTURE
USING
INFRARED
THERMOMETRY
.
139
7.2.1
ESTABLISHING
SUITABLE
TIME
FOR
THE
MEASUREMENT
OF
SURFACE
SOIL
MINUS
AIR
TEMPERATURE
UNDER
TROPICAL
SEMI-ARID
CONDITIONS
.
139
7.2.2
USE
OF
MAXIMUM
SURFACE
SOIL
MINUS
AIR
TEMPERATURE
DIFFERENTIAL
(TDMAX)
AS
ESTIMATOR
OF
SOIL
MOISTURE
CONTENT
.
139
7.2.3
USE
OF
NET
RADIATION
-
TDMAX/RNDT
.
141
7.2.4
INFLUENCE
OF
CLOUD
COVER
-
IMPROVEMENT
OF
THE
RELATIONSHIPS
.
142
7.2.5
INFERRING
OF
PROFILE
SOIL
MOISTURE
CONTENT
FROM
NEAR-SURFACE
MEASUREMENTS
.
147
7.2.5.1
EMPIRICAL
METHODS
BASED
ON
STATISTICAL
ANALYSIS
.
147
7.3
MODEL
SIMULATION
.
148
7.3.1
MODEL
CALIBRATION
.
148
7.3.1.1
COMPARISON
WITH
MEASURED
SOIL
WATER
CONTENTS
.
149
7.3.1.1.1
QUALITATIVE
COMPARISON
.
149
7.3.1.1.2
QUANTITATIVE
COMPARISON
.
151
7.3.1.2
COMPARISON
WITH
MEASURED
SURFACE
SOIL
TEMPERATURES
.
153
7.3.1.2.1
QUALITATIVE
COMPARISON
.
153
7.3.1.2.2
QUANTITATIVE
COMPARISON
.
154
7.3.1.3
COMPARISON
WITH
MEASURED
PROFILE
SOIL
TEMPERATURES
.
155
7.3.1.3.1
QUALITATIVE
COMPARISON
.
155
7.3.1.3.2
QUANTITATIVE
COMPARISON
.
156
7.3.2
MODEL
VALIDATION
.
157
7.3.2.1
COMPARISON
WITH
MEASURED
SOIL
WATER
CONTENTS
.
157
7.3.2.1.1
QUALITATIVE
COMPARISON
.
157
7.3.2.1.2
QUANTITATIVE
COMPARISON
.
158
7.3.2.2
COMPARISON
WITH
MEASURED
SOIL
TEMPERATURES
.
159
7.3.2.2.1
QUALITATIVE
COMPARISON
.
159
7.3.2.2.2
QUANTITATIVE
COMPARISON
.
161
7.4
INTEGRATION
OF
MEASUREMENTS
WITH
THE
MODEL
.
161
XII
7.4.1
USE
OF
INFRARED
THERMOMETRY
DERIVED
NEAR-SURFACE
SOIL
MOISTURE
CONTENT
AND
SURFACE
SOIL
TEMPERATURE
AS
INITIAL
CONDITIONS
TO
DRIVE
THE
MODEL
.
161
7.4.2
INFERRING
OF
SOIL
WATER
CONTENT
IN
DEEPER
LAYERS
OF
THE
SOIL
FROM
NEAR-SURFACE
MEASUREMENTS
.
164
7.4.3
PREDICTING
OF
ROOT-ZONE
WEIGHTED-AVERAGE
SOIL
WATER
CONTENT
FROM
NEAR-SURFACE
MEASUREMENTS
.
166
7.5
SENSITIVITY
ANALYSIS
.
168
7.5.1
CHOICE
OF
THE
VERTICAL
SPACE
STEP
SIZE,
AZ
.
170
7.5.2
CHOICE
OF
THE
TIME
STEP
SIZE,
AT
.
171
7.6
SIMULATION
OF
THE
SOIL
SURFACE
ENERGY
BALANCE
.
171
8
SUMMARY
AND
CONCLUSIONS
.
173
8.1
SUMMARY
.
173
8.2
CONCLUSIONS
.
176
8.3
RECOMMENDATIONS
FOR
FURTHER
RESEARCH
.
177
REFERENCES
.
178
APPENDIX
1:
THE
SUAHEAT
PROGRAM
.
201
APPENDIX
2:
VARIABLES
IN
SUAHEAT
PROGRAM
.
206
APPENDIX
3:
SUAHEAT
PROGRAM
LISTING
.
209
APPENDIX
4:
DATA
PROCESSING
PROGRAMS
.
232
APPENDIX
5:
PREVAILING
CONDITIONS
DURING
THE
EXPERIMENTAL
PERIOD
.
239
APPENDIX
6:
CORRECTION
FOR
CHANGES
IN
SOLAR
RADIATION
.
240
APPENDIX
7:
SOIL
PHYSICAL
PROPERTIES
.
242
APPENDIX
8:
EXAMPLE
OF
INPUT
FILES
.
248
APPENDIX
9:
EXAMPLE
OF
SUAHEAT
MODEL
OUTPUT
SCREEN
.
250
APPENDIX
10
DEFINITIONS
OF
"
SURFACE
TEMPERATURE
"
.
251
APPENDIX
11:
SUMMARY
OF
STATISTICAL
ANALYSIS
.
253 |
| any_adam_object | 1 |
| author | Salim, Baanda Ayub |
| author_facet | Salim, Baanda Ayub |
| author_role | aut |
| author_sort | Salim, Baanda Ayub |
| author_variant | b a s ba bas |
| building | Verbundindex |
| bvnumber | BV012880734 |
| classification_tum | GEO 277d LAN 117d GEO 315d |
| ctrlnum | (OCoLC)637459532 (DE-599)BVBBV012880734 |
| discipline | Geowissenschaften Agrarwissenschaft Pflanzenbau |
| format | Book |
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| genre | (DE-588)4113937-9 Hochschulschrift gnd-content |
| genre_facet | Hochschulschrift |
| geographic | Morogoro (DE-588)4115241-4 gnd |
| geographic_facet | Morogoro |
| id | DE-604.BV012880734 |
| illustrated | Illustrated |
| indexdate | 2024-08-16T01:17:19Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-008767701 |
| oclc_num | 637459532 |
| open_access_boolean | |
| owner | DE-703 DE-M49 DE-BY-TUM |
| owner_facet | DE-703 DE-M49 DE-BY-TUM |
| physical | XVIII, 266 S. graph. Darst. |
| publishDate | 1999 |
| publishDateSearch | 1999 |
| publishDateSort | 1999 |
| publisher | Inst. für Landtechnik |
| record_format | marc |
| series2 | Max-Eyth-Gesellschaft für Agrartechnik / Arbeitskreis Forschung und Lehre: Forschungsbericht Agrartechnik des Arbeitskreises Forschung und Lehre der Max-Eyth-Gesellschaft (MEG) |
| spelling | Salim, Baanda Ayub Verfasser aut Modelling and measurement of soil moisture content based on a remote sensing method for applications in semi-arid tropics von Baanda A. Salim Bonn Inst. für Landtechnik 1999 XVIII, 266 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Max-Eyth-Gesellschaft für Agrartechnik / Arbeitskreis Forschung und Lehre: Forschungsbericht Agrartechnik des Arbeitskreises Forschung und Lehre der Max-Eyth-Gesellschaft (MEG) 340 Zugl.: Bonn, Univ., Diss., 1999 Bodenfeuchte (DE-588)4236526-0 gnd rswk-swf Bodentemperatur (DE-588)4146172-1 gnd rswk-swf Messung (DE-588)4038852-9 gnd rswk-swf Morogoro (DE-588)4115241-4 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Bodenfeuchte (DE-588)4236526-0 s Messung (DE-588)4038852-9 s DE-604 Morogoro (DE-588)4115241-4 g Bodentemperatur (DE-588)4146172-1 s Arbeitskreis Forschung und Lehre: Forschungsbericht Agrartechnik des Arbeitskreises Forschung und Lehre der Max-Eyth-Gesellschaft (MEG) Max-Eyth-Gesellschaft für Agrartechnik 340 (DE-604)BV000001198 340 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008767701&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Salim, Baanda Ayub Modelling and measurement of soil moisture content based on a remote sensing method for applications in semi-arid tropics Bodenfeuchte (DE-588)4236526-0 gnd Bodentemperatur (DE-588)4146172-1 gnd Messung (DE-588)4038852-9 gnd |
| subject_GND | (DE-588)4236526-0 (DE-588)4146172-1 (DE-588)4038852-9 (DE-588)4115241-4 (DE-588)4113937-9 |
| title | Modelling and measurement of soil moisture content based on a remote sensing method for applications in semi-arid tropics |
| title_auth | Modelling and measurement of soil moisture content based on a remote sensing method for applications in semi-arid tropics |
| title_exact_search | Modelling and measurement of soil moisture content based on a remote sensing method for applications in semi-arid tropics |
| title_full | Modelling and measurement of soil moisture content based on a remote sensing method for applications in semi-arid tropics von Baanda A. Salim |
| title_fullStr | Modelling and measurement of soil moisture content based on a remote sensing method for applications in semi-arid tropics von Baanda A. Salim |
| title_full_unstemmed | Modelling and measurement of soil moisture content based on a remote sensing method for applications in semi-arid tropics von Baanda A. Salim |
| title_short | Modelling and measurement of soil moisture content based on a remote sensing method for applications in semi-arid tropics |
| title_sort | modelling and measurement of soil moisture content based on a remote sensing method for applications in semi arid tropics |
| topic | Bodenfeuchte (DE-588)4236526-0 gnd Bodentemperatur (DE-588)4146172-1 gnd Messung (DE-588)4038852-9 gnd |
| topic_facet | Bodenfeuchte Bodentemperatur Messung Morogoro Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008767701&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV000001198 |
| work_keys_str_mv | AT salimbaandaayub modellingandmeasurementofsoilmoisturecontentbasedonaremotesensingmethodforapplicationsinsemiaridtropics |